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Intake manifold search [message #330906]

Fri, 13 April 2018 21:10

Jack Ramsey

Messages: 82
Registered: December 2012
Location: Tulare, CA

Karma: 1

Member

I see in the photo site John Heslinga who I think has a 74 (so should be a 455) installed a Performer intake manifold and also was using a standard engine cover.
John is that accurate or did you do an engine change?

Thanks,

Jack (grasping at straws)

Jack Ramsey Tulare, CA TZE165V101526 1975 Palm Beach

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Re: [GMCnet] Intake manifold search [message #330912 is a reply to message #330906]

Sat, 14 April 2018 07:43

USAussie

Messages: 15912
Registered: July 2007
Location: Sydney, Australia

Karma: 6

Senior Member

Jack,

I perused John's photo albums and could not find a photo of the "cockpit" showing the flat standard OEM engine cover. As far as I
know the Performer won't fit unless you install a dog house (raised) cover.

Below you will find an email I sent in back in 2015:

-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Robert Mueller
Sent: Monday, March 30, 2015 4:40 PM
To: gmclist@temp.gmcnet.org
Subject: [GMCnet] 455 Intake Manifolds

G'day,

Before I returned to Sydney I took the three intake manifolds for a 455 GMC I have in Houston took some measurements I thought might
be helpful:

I turned them over on my workbench and sat them on the carb mounting surface then measured the distance from the workbench to the
front lifter valley sealing surface and the rear lifter valley sealing surface.

OEM Manifold

Front: 3.55 inches
Rear: 3.77 inches

Edelbrock Performer

Front: 4.50 inches
Rear: 5.60 inches

Edelbrock Performer that has had the carb mounting surface milled down reducing the height.

Front: 3.76 inches
Rear: 4.08 inches

The depth of the plenum under the carb mounting surface is about the same as the OEM manifold.

Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808

-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Jack Ramsey
Sent: Friday, April 13, 2018 9:10 PM
To: gmclist@list.gmcnet.org
Subject: [GMCnet] Intake manifold search

I see in the photo site John Heslinga who I think has a 74 (so should be a 455) installed a Performer intake manifold and also was
using a standard engine cover.

John is that accurate or did you do an engine change?

Thanks,

Jack (grasping at straws)

--
Jack Ramsey
Tulare, CA
TZE165V101526
1975 Palm Beach

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426

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Re: Intake manifold search [message #330923 is a reply to message #330906]

Sat, 14 April 2018 12:19

Jack Ramsey

Messages: 82
Registered: December 2012
Location: Tulare, CA

Karma: 1

Member

Thanks Rob,
Looks like John's pic I saw was was pre-purchase. (link below)

I have resolved the issue and ordered a complete Atomic MSD fuel Injection system, and used intake manifold with proper gaskets and block-off, from Nick at Applied 20 min ago.
The measurements tell me there is hope and I will play with my existing Performer IF and when I have the spare time. Right now i just want it rolling and do some short close to home runs to evaluate the remaining semi-touched systems before a longer late summer planned trip to the Midwest.

Thanks again,

Jack

http://www.gmcmhphotos.com/photos/purchasing-my-74-canyonlands/p42042-additional-photos-from-subsequent-e-mail-communication-pre-purchase-74-ca.html

Jack Ramsey Tulare, CA TZE165V101526 1975 Palm Beach

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Re: Intake manifold search [message #331210 is a reply to message #330923]

Sun, 22 April 2018 01:12

John Heslinga

Messages: 632
Registered: February 2011
Location: Edmonton, Alberta, Canada

Karma: 4

Senior Member

Jack: Sorry that I have not responded earlier. I do not read the forum as much as I once did. There is no negative reason for this other than I am busy doing other things in my life and there is only so much time I can spend on the computer. However I do review the entrys regularly simply to see whats going on. I do have a Edelbrock performer manifold on my 1974 455. The Carburetor mount as not been milled down. Yes the engine cover has been modified to accommodate the increased height of the engine. I created a doghouse 3 1/2 inches simply large enough to go around the Air Cleaner to make up for the needed space. This gives us places to put our foot when climbing into the seats.

Using a performer manifold results in a number of modifications being required, so please consider this if you choose to do a change over. The Snorkel of the air cleaner will no longer fit under the floor and will need some kind of modifications. The Cruise control vacuum servo is also no longer aligned properly to the throttle lever meaning the the linkage needs modifying. I also found that I needed to make a couple modifications to a web on the manifold to allow the distributor Vacuum advance pot to rotate further into the manifold Giving the wires a better line to the plugs. I created an air box for the snorkel and use a modified Intake hose from a more modern intake system to go under the floor. The Hot air valve now operates under the floor as well. Here are some photos giving you an idea what I did. I have more if needed but you get the idea.

engine Cover Modification needed.
http://www.gmcmhphotos.com/photos/discussion-photos/p64775-performer-manifold-engine-cover-modifications.html

Manifold Web Modification
http://www.gmcmhphotos.com/photos/discussion-photos/p64774-performer-manifold-web-modification.html

Throttle linkage modification
http://www.gmcmhphotos.com/photos/discussion-photos/p64773-performer-manifold-throttle-linkage-modification.html

Air Cleaner Modification.
http://www.gmcmhphotos.com/photos/discussion-photos/p64772-performer-manifold-air-cleaner-mod.html

John and Cathie Heslinga 1974 Canyonlands 260 455, Manny tranny and 1 ton, 3:70 LS, Red Seal Journeyman, DTE, BEd. MEd. Edmonton, Alberta

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Re: Intake manifold search [message #331304 is a reply to message #330906]

Mon, 23 April 2018 22:16

Jack Ramsey

Messages: 82
Registered: December 2012
Location: Tulare, CA

Karma: 1

Member

Thanks John,

I already have a performer, and while it is not a REAL problem, the exaggerated doghouse is.

http://www.gmcmhphotos.com/photos/atomic-tbi-fuel-injection/p64781-start-with-performer-and-ridiculous-doghouse.html

It (carb and air cleaner) does not stick up that far

http://www.gmcmhphotos.com/photos/atomic-tbi-fuel-injection/p64783-mess-under-the-doghouse.html

http://www.gmcmhphotos.com/photos/atomic-tbi-fuel-injection/p64785-start-with-performer-and-ridiculous-doghouse.html

I have a used Torker coming, and since it all has to come out to block off the exhaust warming, will evaluate just how far either of them can be shaved down and see how the air cleaner either fits, snorkels, and minimize this senseless 9 inch intrusion into cab space. Looks like 5 inches would be more than enough with just stock equipment and the performer.

Jack Ramsey Tulare, CA TZE165V101526 1975 Palm Beach

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Re: [GMCnet] Intake manifold search [message #331312 is a reply to message #330912]

Mon, 23 April 2018 23:29

Harry

Messages: 1888
Registered: October 2007
Location: Victoria, BC CANADA

Karma: 3

Senior Member

USAussie wrote on Sat, 14 April 2018 05:43

Jack,

I perused John's photo albums and could not find a photo of the "cockpit" showing the flat standard OEM engine cover. As far as I
know the Performer won't fit unless you install a dog house (raised) cover.

Below you will find an email I sent in back in 2015:

-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Robert Mueller
Sent: Monday, March 30, 2015 4:40 PM
To: gmclist@temp.gmcnet.org
Subject: [GMCnet] 455 Intake Manifolds

G'day,

Before I returned to Sydney I took the three intake manifolds for a 455 GMC I have in Houston took some measurements I thought might
be helpful:

I turned them over on my workbench and sat them on the carb mounting surface then measured the distance from the workbench to the
front lifter valley sealing surface and the rear lifter valley sealing surface.

OEM Manifold

Front: 3.55 inches
Rear: 3.77 inches

Edelbrock Performer

Front: 4.50 inches
Rear: 5.60 inches

Edelbrock Performer that has had the carb mounting surface milled down reducing the height.

Front: 3.76 inches
Rear: 4.08 inches

The depth of the plenum under the carb mounting surface is about the same as the OEM manifold.

Regards,
Rob M.

Hello Rob;
Looking at these before and after numbers, it looks like there was .74 of an inch removed from the front of the carb
mounting surface, but 1.52 from the rear.
Is this correct?
Would the carb be sitting at an angle?
Thank you for any information.
Dave J.

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Re: Intake manifold search [message #331313 is a reply to message #331304]

Tue, 24 April 2018 00:34

John Heslinga

Messages: 632
Registered: February 2011
Location: Edmonton, Alberta, Canada

Karma: 4

Senior Member

Jack.
Further to you situation. I agree that the doghouse approach is not the most ideal. I found that I only needed 3 inches intrusion and I gave it a bit more. The height in my case was not a real problem and in fact Ive come to enjoy the height as I drive down the road to put things on. Way easier to reach!!! It is a perfect extension to the drivers table that is there. The real problem I had was that I did not want to really climb onto the doghouse to get into our seats. By making sure there was enough foot space beside the doghouse, It is much easier to get into our seats. I placed a floor mat strip on the carpet to ensure I don't get the carpet so dirty, You can see that space more clearly with the mat there.

http://www.gmcmhphotos.com/photos/discussion-photos/p64787-performer-manifold-doghouse.html

That space was larger when I had an aftermarket Air cleaner that I originally used. I thought that air cleaner would be a cooler, sexier, and most effective. I really hated it. It was far too noisy for me. The constant hiss from from the part throttle operation and the Horrendous ROAR when the secondaries began to open. That might be OK for a young guy but we could hardly talk!! The stock air cleaner is actually designed as a noise limiter and it became a desirable thing. After adapting it I was a lot more happy. The doghouse needed another slight adjustment to its footprint but the end results were better. Of course, noise limiting strategies in the entire cab area also became important to me, hence the underlay and carpet!! The extra space I gave the cover and doghouse will also allow me to install commercial noise limiting strategies on the underside of the hood. ( However: I'm pretty happy with the way it is at the moment.)

http://www.gmcmhphotos.com/photos/discussion-photos/p64788-performer-manifold-air-cleaner.html

John and Cathie Heslinga 1974 Canyonlands 260 455, Manny tranny and 1 ton, 3:70 LS, Red Seal Journeyman, DTE, BEd. MEd. Edmonton, Alberta

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Re: Intake manifold search [message #331314 is a reply to message #331313]

Tue, 24 April 2018 00:49

John Heslinga

Messages: 632
Registered: February 2011
Location: Edmonton, Alberta, Canada

Karma: 4

Senior Member

One last thing,

One other thing I found with the performer manifold is that the angle of the carburetor mouthing surface is designed for regular cars in which the engine is mounted at a much larger front to rear angle than the Toronado and the Coach. The coach engine is much closer to level when mounted in the engine cradle. The angle of the carb mount surface is designed to keep the carb level in those other cars. In my opinion the carburetor has too much forward rake in the coach. I spoke to a machinist (I don't have a mill) if he could mill some height and angle out of the high rise of the manifold. He did not want to try because he was afraid that there would be too much vibration and cause too much chatter and poor finish. I not sure I agree but I did not bother looking for another machinist. I regret not taking it further, I'm sure it would not be a problem, and if anyone has had it done I would like to know how things worked out. If I need to take out the manifold again, I will take that further. Please consider having yours done if you intend to use it again.
Best Regards.

John and Cathie Heslinga 1974 Canyonlands 260 455, Manny tranny and 1 ton, 3:70 LS, Red Seal Journeyman, DTE, BEd. MEd. Edmonton, Alberta

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Re: [GMCnet] Intake manifold search [message #331316 is a reply to message #331304]

Tue, 24 April 2018 05:57

Ken Henderson

Messages: 8726
Registered: March 2004
Location: Americus, GA

Karma: 9

Senior Member

My coach came with a Performer when I bought it in '98. It stayed on there
for maybe 2 years. After I removed it, I was frequently asked "did you
notice any power loss"? My honest answer was always, "Not below 4000
rpm". Are Y'All finding differently, to justify all the doghouse
detriments?

Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI & EBL,
Manny Brakes & 1-Ton, Troy-Bilt APU, etc., etc., etc.
www.gmcwipersetc.com

On Mon, Apr 23, 2018 at 11:16 PM, Jack Ramsey wrote:

> Thanks John,
>
> I already have a performer, and while it is not a REAL problem, the
> exaggerated doghouse is.
> ...
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach

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Re: [GMCnet] Intake manifold search [message #331317 is a reply to message #331312]

Tue, 24 April 2018 06:31

USAussie

Messages: 15912
Registered: July 2007
Location: Sydney, Australia

Karma: 6

Senior Member

David,

I did not do the machining, I got the Performers from Jim Roundtree up in San Antonio. Unfortunately Jim has passed away so I can't
get any info about them from him.

Please note:

"I turned them over on my workbench and sat them on the carb mounting surface then measured the distance from the workbench to the
front lifter valley sealing surface and the rear lifter valley sealing surface."

Unfortunately this does not show how much was milled off the carb mounting surface and I don't know how I could provide that
measurement without installing the Performer on an engine installed in a GMC and placing a straight edge side to side on the cockpit
floor and measuring from the straight edge down to the front of the carb mounting surface and the back of the carb mounting surface.

I may be R&Ring the intake manifold on Double Trouble and if I do I'll take the measurements.

Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808

-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of David H. Jarvis
Sent: Monday, April 23, 2018 11:29 PM
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] Intake manifold search

Hello Rob;

Looking at these before and after numbers, it looks like there was .74 of an inch removed from the front of the carb mounting
surface, but 1.52 from the rear.

Is this correct?

Would the carb be sitting at an angle?

Thank you for any information.

Dave J.

> -----Original Message-----
> From: Gmclist [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Robert Mueller
> Sent: Monday, March 30, 2015 4:40 PM
> To: gmclist@temp.gmcnet.org
> Subject: [GMCnet] 455 Intake Manifolds
>
> G'day,
>
> Before I returned to Sydney I took the three intake manifolds for a 455 GMC I have in Houston took some measurements I thought
might be helpful:
>
> I turned them over on my workbench and sat them on the carb mounting surface then measured the distance from the workbench to the
front lifter valley sealing surface and the rear lifter valley sealing surface.
>
> OEM Manifold
>
> Front: 3.55 inches
> Rear: 3.77 inches
>
> Edelbrock Performer
>
> Front: 4.50 inches
> Rear: 5.60 inches
>
> Edelbrock Performer that has had the carb mounting surface milled down reducing the height.
>
> Front: 3.76 inches
> Rear: 4.08 inches
>
> The depth of the plenum under the carb mounting surface is about the same as the OEM manifold.
>
> Regards,
> Rob M.
>

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426

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Re: [GMCnet] Intake manifold search [message #331330 is a reply to message #331317]

Tue, 24 April 2018 08:52

John Heslinga

Messages: 632
Registered: February 2011
Location: Edmonton, Alberta, Canada

Karma: 4

Senior Member

Ken: regarding your comment: "did you
notice any power loss"? My honest answer was always, "Not below 4000
rpm". Are Y'All finding differently, to justify all the doghouse
detriments?"

I used the performer manifold because i had a minor crack in my stock manifold snd i had the performer. The changeoverwas for finance more than any other reason.
I hoped there might be some improvement as a by-product. ( I admit, the Sexy look was OK Too) But honestly, I cannot say that I "feel" any performance improvement. I don't rev over 4000 RPM for any more than a few seconds at a time. That being said: it takes a lot of difference to feel any difference in power through the seat of your pants. I would not stand up and recommend changing over as a significant improvement in performance. It is a lot of work to do it right with little seat of your pants, measureable return.

Regards

John and Cathie Heslinga 1974 Canyonlands 260 455, Manny tranny and 1 ton, 3:70 LS, Red Seal Journeyman, DTE, BEd. MEd. Edmonton, Alberta

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Re: [GMCnet] Intake manifold search [message #331331 is a reply to message #331330]

Tue, 24 April 2018 09:20

John Heslinga

Messages: 632
Registered: February 2011
Location: Edmonton, Alberta, Canada

Karma: 4

Senior Member

One thing that I always thought about milling the carb mounting surface to a different angle is a problem it could cause to the carb mounting bolt holes and considering the possible consequences. Currently they will be properly drilled, perpendicular to the carb mounting surface. A change in surface angle will mean the holes would no longer be perpendicular but be at a new angle reflecting the angle change of the mounting surface. This must certainly create a problem bolting the carb to the manifold without setting up stresses on the carb. (Or the longer bolts may not even start properly)

Another step in the process may be filling the bolt holes with aluminium threaded rod and redrilling and threading them at the proper perpendicular orientation.

Like I said its a lot of work to do it properly.

John and Cathie Heslinga 1974 Canyonlands 260 455, Manny tranny and 1 ton, 3:70 LS, Red Seal Journeyman, DTE, BEd. MEd. Edmonton, Alberta

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Re: Intake manifold search [message #331346 is a reply to message #330906]

Tue, 24 April 2018 20:54

jhbridges

Messages: 8412
Registered: May 2011
Location: Braselton ga

Karma: -74

Senior Member

Can you get threaded rod in different alloys of Aluminum.. or would that matter? And, with some red Loctite, would the stay still? We had a coupke of guys at Mac's who could easily weld one up with a Heli-Arc, but the rod seems a lot simpler. I get more good ideas on this forum.....

--johnny

Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons. Braselton, Ga. I forgive them all, save those who hurt the dogs. They must answer to me in hell

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Re: [GMCnet] Intake manifold search [message #331350 is a reply to message #331346]

Tue, 24 April 2018 21:26

GMC.LES

Messages: 505
Registered: April 2014

Karma: -2

Senior Member

An easier way to re-align the bolt holes would be to drill the hole oversize and at the new angle, then use acme threaded inserts. We use the keylocked inserts in aviation for threaded holes in aluminum and they are reliable and tough.

http://www.acmeindustrial.com/keylockinsert.htm

Les Burt
Montreal
'75 Eleganza 26'

> On Apr 24, 2018, at 9:54 PM, Johnny Bridges via Gmclist wrote:
>
> Can you get threaded rod in different alloys of Aluminum.. or would that matter? And, with some red Loctite, would the stay still? We had a coupke
> of guys at Mac's who could easily weld one up with a Heli-Arc, but the rod seems a lot simpler. I get more good ideas on this forum.....
>
> --johnny
>
> --
> 76 26' Eleganza(?) with beaucoup mods and add - ons.
> Braselton, Ga.
> "I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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Re: Intake manifold search [message #331599 is a reply to message #330906]

Tue, 01 May 2018 13:48

Jack Ramsey

Messages: 82
Registered: December 2012
Location: Tulare, CA

Karma: 1

Member

removed the over exaggerated dog house to measure how far the stock carb with stock Edlebrock Performer encroaches into the cab.

doghouse:
http://www.gmcmhphotos.com/photos/atomic-tbi-fuel-injection/p64781-start-with-performer-and-ridiculous-doghouse.html

Doghouse removed:
http://www.gmcmhphotos.com/photos/atomic-tbi-fuel-injection/p64801-intake-fi-change.html

Looks like 2.5in ZERO clearance:
http://www.gmcmhphotos.com/photos/atomic-tbi-fuel-injection/p64803-intake-fi-change.html

Edlebrock Torker:
http://www.gmcmhphotos.com/photos/atomic-tbi-fuel-injection/p64793-intake-fi-change.html

Edlebrock Torker front measurement 2.75in:
http://www.gmcmhphotos.com/photos/atomic-tbi-fuel-injection/p64799-intake-fi-change.html

Edlebrock Torker rear measurement 3.0in:
http://www.gmcmhphotos.com/photos/atomic-tbi-fuel-injection/p64797-intake-fi-change.html

some room for planing down:
http://www.gmcmhphotos.com/photos/atomic-tbi-fuel-injection/p64795-intake-fi-change.html

Is the tilt angle for a reason on the intake? I assuming the 455 used in other vehicles, 442, Toronado?
I have had the MSD Atomic Jim shipped to me for a couple of weeks, and will pull it out to see if the TB directly bolts to the Torker.
I have to rebuild the cover anyway, so building one with a reasonable encroachment into the living space does not feel like a deal breaker.
I'm actually more concerned about at 65 yrs old, being able to accurately (leakproof), place a stock manifold (weight) in the valley while bent over,(GRIN). Things I never had to think about before.

Jack

Jack Ramsey Tulare, CA TZE165V101526 1975 Palm Beach

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Re: Intake manifold search [message #331610 is a reply to message #330906]

Tue, 01 May 2018 21:44

Duce Apocalypse

Messages: 824
Registered: May 2009
Location: Los angeles

Karma: 0

Senior Member

I noticed some leaking in my manifold to by the exhaust cross over. was wondering if anyone makes a good low-pro manifold for the 455...

73 Canyon Lands, (a.k.a. The Yellow Submarine) West Los Angeles CA

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Re: [GMCnet] Intake manifold search [message #331615 is a reply to message #331599]

Tue, 01 May 2018 22:09

Ken Henderson

Messages: 8726
Registered: March 2004
Location: Americus, GA

Karma: 9

Senior Member

Jack,

With more than a little experience with intake manifold maneuvering and
using, including Edelbrock Performer, I'd say you're going through a lot of
unnecessary effort to avoid installing the OEM manifold, which will
probably perform just as well as the aluminum ones.

At 81, I wouldn't hesitate to lift an iron manifold with my simple handle:
take a piece of pipe, even 3/4" PVC, or a similarly sized wooden dowel and
drill two 3/8" holes in it at the distance between diagonally opposite bolt
holes in the carburetor flange. Use a couple of 4"-5" X 3/8"-16 bolts to
secure your handle across the flange on the manifold. Take a couple more
3/8"-16 bolt and cut them to 1-1/2" inches or so long -- saw a screwdriver
slot across the cut end to help with later removal. Install one of those
in a manifold bolt hole in each of the heads to use as guides when you
lower the manifold into position with your new handle. IIRC, the Olds
manifold has some slotted holes ideally suited as guide stud positions.

Try it; you'll like it better than buying and modifying aluminum manifolds
-- at least I did.

Ken H.

On Tue, May 1, 2018 at 2:49 PM Jack Ramsey wrote:

> removed the over exaggerated dog house to measure how far the stock carb
> with stock Edlebrock Performer encroaches into the cab.
>
> doghouse:
>
> http://www.gmcmhphotos.com/photos/atomic-tbi-fuel-injection/p64781-start-with-performer-and-ridiculous-doghouse.html
>
> Doghouse removed:
>
> http://www.gmcmhphotos.com/photos/atomic-tbi-fuel-injection/p64801-intake-fi-change.html
>
> Looks like 2.5in ZERO clearance:
>
> http://www.gmcmhphotos.com/photos/atomic-tbi-fuel-injection/p64803-intake-fi-change.html
>
> Edlebrock Torker:
>
> http://www.gmcmhphotos.com/photos/atomic-tbi-fuel-injection/p64793-intake-fi-change.html
>
> Edlebrock Torker front measurement 2.75in:
>
> http://www.gmcmhphotos.com/photos/atomic-tbi-fuel-injection/p64799-intake-fi-change.html
>
> Edlebrock Torker rear measurement 3.0in:
>
> http://www.gmcmhphotos.com/photos/atomic-tbi-fuel-injection/p64797-intake-fi-change.html
>
>
> some room for planing down:
>
> http://www.gmcmhphotos.com/photos/atomic-tbi-fuel-injection/p64795-intake-fi-change.html
>
> Is the tilt angle for a reason on the intake? I assuming the 455 used in
> other vehicles, 442, Toronado?
> I have had the MSD Atomic Jim shipped to me for a couple of weeks, and
> will pull it out to see if the TB directly bolts to the Torker.
> I have to rebuild the cover anyway, so building one with a reasonable
> encroachment into the living space does not feel like a deal breaker.
> I'm actually more concerned about at 65 yrs old, being able to accurately
> (leakproof), place a stock manifold (weight) in the valley while bent
> over,(GRIN). Things I never had to think about before.
>
> Jack
>
> --
> Jack Ramsey
> Tulare, CA
> TZE165V101526
> 1975 Palm Beach
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach

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Re: Intake manifold search [message #331641 is a reply to message #331599]

Wed, 02 May 2018 10:00

pjburt

Messages: 436
Registered: February 2016
Location: Fresno, California

Karma: 1

Senior Member

Jack, I can affirm Ken's suggestion. I used the pipe and long bolts in the carb flange to reset my cast iron manifold. I just straddled the opening and set it into place. I wish I had used it to pull the manifold instead of muscling it out by laying over the hole and just using my 72 year old arms and back.

Jack Ramsey wrote on Tue, 01 May 2018 11:48

Is the tilt angle for a reason on the intake? I assuming the 455 used in other vehicles, 442, Toronado?
I have had the MSD Atomic Jim shipped to me for a couple of weeks, and will pull it out to see if the TB directly bolts to the Torker.
I have to rebuild the cover anyway, so building one with a reasonable encroachment into the living space does not feel like a deal breaker.
I'm actually more concerned about at 65 yrs old, being able to accurately (leakproof), place a stock manifold (weight) in the valley while bent over,(GRIN). Things I never had to think about before.

Jack

Jerry Burt Fresno, CA.
73 Gmc 26' Canyon Lands
Members: FMCA - GMCMI - GMCWS
A truly happy person is one who can enjoy the scenery on a detour.

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Re: [GMCnet] Intake manifold search [message #331656 is a reply to message #331641]

Wed, 02 May 2018 14:08

powwerjon

Messages: 849
Registered: March 2013

Karma: -2

Senior Member

Jack,
I am with Ken on this suggestion. You are not going to gain that much
installing the Edlebrock Performer manifold over using the stock manifold.
What you will gain is all the necessary modification to install an
aluminum manifold and make it work. I run an Accel Gen 6 MPFI based on the
Edlebrock Performer manifold. I can run without having a doghouse because
the body on the Buskirk stretch coach has been raised 2" over stock and the
system clears the engine cover. IMHO a stock manifold that has been
checked for cracks and using the block off plates to prevent the hot gas
crossover will work just fine for our coaches. As for the weight Ken
lifting handle works just fine.

J.R. Wright
GMC Great Laker
GMC Eastern States
GMCMHI
TZE Zone Restorations
78 Buskirk Custom 30' Stretch
75 Avion (Under going Frame up Restoration)

On Wed, May 2, 2018 at 11:00 AM, Jerry Burt wrote:

> Jack, I can affirm Ken's suggestion. I used the pipe and long bolts in the
> carb flange to reset my cast iron manifold. I just straddled the opening
> and set it into place. I wish I had used it to pull the manifold instead
> of muscling it out by laying over the hole and just using my 72 year old
> arms
> and back.
>
>
> Jack Ramsey wrote on Tue, 01 May 2018 11:48
>> Is the tilt angle for a reason on the intake? I assuming the 455 used in
> other vehicles, 442, Toronado?
>> I have had the MSD Atomic Jim shipped to me for a couple of weeks, and
> will pull it out to see if the TB directly bolts to the Torker.
>> I have to rebuild the cover anyway, so building one with a reasonable
> encroachment into the living space does not feel like a deal breaker.
>> I'm actually more concerned about at 65 yrs old, being able to
> accurately (leakproof), place a stock manifold (weight) in the valley while
> bent
>> over,(GRIN). Things I never had to think about before.
>>
>> Jack
>
>
> --
> Patti & Jerry Burt
> 73 Gmc 26' Canyon Lands -
> 77 Palm Beach
> Members: FMCA - GMCMI - GMCWS
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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Re: [GMCnet] Intake manifold search [message #331659 is a reply to message #331656]

Wed, 02 May 2018 14:51

jimk

Messages: 6734
Registered: July 2006
Location: Belmont, CA

Karma: 9

Senior Member

We find that the stock intake works best when you use the exaust block off
plate kit and use the electric choke.

On Wed, May 2, 2018 at 12:08 PM, John Wright wrote:

> Jack,
> I am with Ken on this suggestion. You are not going to gain that much
> installing the Edlebrock Performer manifold over using the stock manifold.
> What you will gain is all the necessary modification to install an
> aluminum manifold and make it work. I run an Accel Gen 6 MPFI based on the
> Edlebrock Performer manifold. I can run without having a doghouse because
> the body on the Buskirk stretch coach has been raised 2" over stock and the
> system clears the engine cover. IMHO a stock manifold that has been
> checked for cracks and using the block off plates to prevent the hot gas
> crossover will work just fine for our coaches. As for the weight Ken
> lifting handle works just fine.
>
> J.R. Wright
> GMC Great Laker
> GMC Eastern States
> GMCMHI
> TZE Zone Restorations
> 78 Buskirk Custom 30' Stretch
> 75 Avion (Under going Frame up Restoration)
>
>
> On Wed, May 2, 2018 at 11:00 AM, Jerry Burt wrote:
>
>> Jack, I can affirm Ken's suggestion. I used the pipe and long bolts in
> the
>> carb flange to reset my cast iron manifold. I just straddled the opening
>> and set it into place. I wish I had used it to pull the manifold instead
>> of muscling it out by laying over the hole and just using my 72 year old
>> arms
>> and back.
>>
>>
>> Jack Ramsey wrote on Tue, 01 May 2018 11:48
>>> Is the tilt angle for a reason on the intake? I assuming the 455 used
> in
>> other vehicles, 442, Toronado?
>>> I have had the MSD Atomic Jim shipped to me for a couple of weeks, and
>> will pull it out to see if the TB directly bolts to the Torker.
>>> I have to rebuild the cover anyway, so building one with a reasonable
>> encroachment into the living space does not feel like a deal breaker.
>>> I'm actually more concerned about at 65 yrs old, being able to
>> accurately (leakproof), place a stock manifold (weight) in the valley
> while
>> bent
>>> over,(GRIN). Things I never had to think about before.
>>>
>>> Jack
>>
>>
>> --
>> Patti & Jerry Burt
>> 73 Gmc 26' Canyon Lands -
>> 77 Palm Beach
>> Members: FMCA - GMCMI - GMCWS
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502

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