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[GMCnet] Air cleaner clearance. More then one way to skin a cat [message #270452]

Mon, 26 January 2015 13:20

BobDunahugh

Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA

Karma: 11

Senior Member

Haven't found a Jeep air horn yet. Later this week I'm going to pull the carb off. And install the TBI. Then I'll know the room I have. I had another thought. Pull the intake manifold. No big job. Mount it in the Bridgeport. And simple lower the carb deck. Anyone ever done that? Bob Dunahugh.
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Re: [GMCnet] Air cleaner clearance. More then one way to skin a cat [message #270455 is a reply to message #270452]

Mon, 26 January 2015 14:08

USAussie

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

Karma: 6

Senior Member

Bob,

Are you talking about the OEM or aftermarket manifold?

I have an Edelbrock manifold for a 455 in the USA that someone did that to and compared to a second STOCK Edelbrock the carb
mounting point is around 3/4 - 1" lower,

The above statement is from memory and I'm not sure about the measurement.

Regards,
Rob M.

-----Original Message-----
From: Bob Dunahugh

Haven't found a Jeep air horn yet. Later this week I'm going to pull the carb off. And install the TBI. Then I'll know the room I
have. I had another thought. Pull the intake manifold. No big job. Mount it in the Bridgeport. And simple lower the carb deck.
Anyone ever done that? Bob Dunahugh.

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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] Air cleaner clearance. More then one way to skin a cat [message #270459 is a reply to message #270452]

Mon, 26 January 2015 15:16

BobDunahugh

Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA

Karma: 11

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Rob. I have a 78, 403. I think the 403, and 455 intakes are different in some way. Someone out there can clue me in on the differences. Bob Dunahugh.
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Re: [GMCnet] Air cleaner clearance. More then one way to skin a cat [message #270460 is a reply to message #270459]

Mon, 26 January 2015 15:23

BobDunahugh

Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA

Karma: 11

Senior Member

Sorry Rob. Didn't answer your question. I have the OEM manifold on it now. Bob

Rob. I have a 78, 403. I think the 403, and 455 intakes are different in some way. Someone out there can clue me in on the differences. Bob Dunahugh.
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Re: [GMCnet] Air cleaner clearance. More then one way to skin a cat [message #270461 is a reply to message #270452]

Mon, 26 January 2015 15:30

Broham

Messages: 204
Registered: March 2013
Location: Detroit, Michigan

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BobDunahugh wrote on Mon, 26 January 2015 14:20

Haven't found a Jeep air horn yet.

They give them to me all but free when I purchase something else at Taylor Auto Parts in Taylor, MI. If you can't find one, I'm sure I could get you one for shipping cost

Todd

Todd Owner of a 1976 Eleganza II 26’ other toys: 93 Vette 84 Goldwing and gone but not forgotten 72 CB750 Chopper 96 Caprice Classic 34 Ford roadster 94 Fleetwood

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Re: [GMCnet] Air cleaner clearance. More then one way to skin a cat [message #270462 is a reply to message #270459]

Mon, 26 January 2015 15:47

C Boyd

Messages: 2629
Registered: April 2006

Karma: 18

Senior Member

Sir, the 403 is a small block. That's why the right exhaust manifold is different to clear the oil cooler adapter. The intake is 2" narrower that the 455. The 403 is also shorter than the 455 so you can run a std small block Olds intake in the GMC instead of the sunk lower Toronado style intake on the 455.

BobDunahugh wrote on Mon, 26 January 2015 16:16

Rob. I have a 78, 403. I think the 403, and 455 intakes are different in some way. Someone out there can clue me in on the differences. Bob Dunahugh.
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C. Boyd
76 Crestmont
East Tennessee

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Re: [GMCnet] Air cleaner clearance. More then one way to skin a cat [message #270464 is a reply to message #270452]

Mon, 26 January 2015 15:52

wally

Messages: 643
Registered: August 2004
Location: Omaha Nebraska

Karma: 5

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BobDunahugh wrote on Mon, 26 January 2015 13:20

Haven't found a Jeep air horn yet. Later this week I'm going to pull the carb off. And install the TBI. Then I'll know the room I have. I had another thought. Pull the intake manifold. No big job. Mount it in the Bridgeport. And simple lower the carb deck. Anyone ever done that? Bob Dunahugh.
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I'm looking at a 455 stock manifold and the thinnest part is about .390" from the carb flange before your in the manifold passage.. maybe you could get an 1/8" lower before there's not enough to seal or bolt to and the linkage might hit. 403 might be different though.

Wally Anderson
Omaha NE
75 Glenbrook

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Re: [GMCnet] Air cleaner clearance. More then one way to skin a cat [message #270466 is a reply to message #270462]

Mon, 26 January 2015 16:27

C Boyd

Messages: 2629
Registered: April 2006

Karma: 18

Senior Member

Bob, my brain has quit working, sorry. I knew you were going to FI and I know you have a 403 small block and any small block intake will fit, from 75 1/2 till 79 some Eldos had Olds 350s with port injection with a 2v air intake. Yes a factory (some were aluminum) intake to fit the 403 with 8 injectors, one in each runner. More info here.
http://442.com/oldsfaq/ofinm.htm#Intake%20Manifolds
Scroll down to port fuel injection.

The stock set up is not sequencel but with your abilities.... ..??

C Boyd wrote on Mon, 26 January 2015 16:47

Sir, the 403 is a small block. That's why the right exhaust manifold is different to clear the oil cooler adapter. The intake is 2" narrower that the 455. The 403 is also shorter than the 455 so you can run a std small block Olds intake in the GMC instead of the sunk lower Toronado style intake on the 455.

BobDunahugh wrote on Mon, 26 January 2015 16:16
Rob. I have a 78, 403. I think the 403, and 455 intakes are different in some way. Someone out there can clue me in on the differences. Bob Dunahugh.
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C. Boyd
76 Crestmont
East Tennessee

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Re: [GMCnet] Air cleaner clearance. More then one way to skin a cat [message #270481 is a reply to message #270466]

Mon, 26 January 2015 19:18

sgltrac

Messages: 2797
Registered: April 2011

Karma: 1

Senior Member

Or you could buy the air horn from applied.......

Sully
77 royale
Seattle

Todd Sullivan

> On Jan 26, 2015, at 2:27 PM, Charles Boyd wrote:
>
> Bob, my brain has quit working, sorry. I knew you were going to FI and I know you have a 403 small block and any small block intake will fit, from
> 75 1/2 till 79 some Eldos had Olds 350s with port injection with a 2v air intake. Yes a factory (some were aluminum) intake to fit the 403 with 8
> injectors, one in each runner. More info here.
> http://442.com/oldsfaq/ofinm.htm#Intake%20Manifolds
> Scroll down to port fuel injection.
>
> The stock set up is not sequencel but with your abilities.... ..??
>
>
> C Boyd wrote on Mon, 26 January 2015 16:47
>> Sir, the 403 is a small block. That's why the right exhaust manifold is different to clear the oil cooler adapter. The intake is 2" narrower
>> that the 455. The 403 is also shorter than the 455 so you can run a std small block Olds intake in the GMC instead of the sunk lower Toronado style
>> intake on the 455.
>>
>>
>>
>> BobDunahugh wrote on Mon, 26 January 2015 16:16
>>> Rob. I have a 78, 403. I think the 403, and 455 intakes are different in some way. Someone out there can clue me in on the differences. Bob
>>> Dunahugh.
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
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>
> --
> C. Boyd
> 76 Crestmont
> East Tennessee
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Sully 77 Royale basket case. Future motorhome land speed record holder(bucket list) Seattle, Wa.

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Re: [GMCnet] [GMCMH-EFI] Air cleaner clearance. More then one way to skin a cat [message #270482 is a reply to message #270481]

Mon, 26 January 2015 19:28

Mr ERFisher

Messages: 7117
Registered: August 2005

Karma: 2

Senior Member

Read here
http://www.appliedgmc.com/prod.itml/icOid/1432

On Monday, January 26, 2015, Todd Sullivan wrote:

> Or you could buy the air horn from applied.......
>
> Sully
> 77 royale
> Seattle
>
> Todd Sullivan
>
>> On Jan 26, 2015, at 2:27 PM, Charles Boyd > wrote:
>>
>> Bob, my brain has quit working, sorry. I knew you were going to FI and
> I know you have a 403 small block and any small block intake will fit, from
>> 75 1/2 till 79 some Eldos had Olds 350s with port injection with a 2v
> air intake. Yes a factory (some were aluminum) intake to fit the 403 with 8
>> injectors, one in each runner. More info here.
>> http://442.com/oldsfaq/ofinm.htm#Intake%20Manifolds
>> Scroll down to port fuel injection.
>>
>> The stock set up is not sequencel but with your abilities.... ..??
>>
>>
>> C Boyd wrote on Mon, 26 January 2015 16:47
>>> Sir, the 403 is a small block. That's why the right exhaust manifold
> is different to clear the oil cooler adapter. The intake is 2" narrower
>>> that the 455. The 403 is also shorter than the 455 so you can run a
> std small block Olds intake in the GMC instead of the sunk lower Toronado
> style
>>> intake on the 455.
>>>
>>>
>>>
>>> BobDunahugh wrote on Mon, 26 January 2015 16:16
>>>> Rob. I have a 78, 403. I think the 403, and 455 intakes are different
> in some way. Someone out there can clue me in on the differences. Bob
>>>> Dunahugh.
>>>> _______________________________________________
>>>> GMCnet mailing list
>>>> Unsubscribe or Change List Options:
>>>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>
>> --
>> C. Boyd
>> 76 Crestmont
>> East Tennessee
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> _______________________________________________
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--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
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Alternator Protection Cable
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Re: [GMCnet] Air cleaner clearance. More then one way to skin a cat [message #270505 is a reply to message #270460]

Tue, 27 January 2015 01:03

BobDunahugh

Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA

Karma: 11

Senior Member

Charles B. Thanks for explaining the differences between the 403, and 455. The difference between a small, and big block Chevy is vary clear. The Olds is another story for me. I have a Caddy 350 port EFI manifold. Be nice if I could modify that manifold to work. Not likely. But I'll have to look. Just my nature. Bob Dunahugh.
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Re: [GMCnet] Air cleaner clearance. More then one way to skin a cat [message #270526 is a reply to message #270452]

Tue, 27 January 2015 08:55

JohnL455

Messages: 4447
Registered: October 2006
Location: Woodstock, IL

Karma: 12

Senior Member

I think milling the manifold would shorten the intake runner length and you might sacrifice torque in the prime usage RPM range

John Lebetski
Woodstock, IL
77 Eleganza II

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Re: [GMCnet] Air cleaner [message #351750 is a reply to message #270452]

Fri, 24 January 2020 23:49

jimk

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

Karma: 9

Senior Member

Did you know that Caterpillar, Cummins and other engine manufactures sent
out a bulletin that stated they will not honor warranty if the engine is
using the K & N air filter.
The reason is that it works on a very old and inefficient technology.
Does not mater how much oil you coat it, the media is way too open.
Too much particulates get through and those are dirt and it wears the
engine parts.
We used them when we drag raced and dirt trail as it is capable of
accepting a large load of dirt as the dirt does get drawn in past the media
and go into the engine where most people never see.

On Fri, Jan 24, 2020 at 6:00 PM Todd Sullivan via Gmclist <
gmclist@list.gmcnet.org> wrote:

> Agreed Larry. The War Pig came to me w/o the stock tins.
>
> Sully
> Bellevue wa
>
> On Fri, Jan 24, 2020 at 5:57 PM Larry via Gmclist >
> wrote:
>
>> For my Cadillac engine I am using a stock 1976 EFI air cleaner, with a
> Wix
>> brand filter. Between the size of the snorkel, and size of the cleaning
>> element, and considering the RPM's the we run, I see no need to look for
>> anything better. Stock units designed by GM should be more than adequate
> to
>> do the job. JMHO
>> --
>> Larry
>> 78 Royale w/500 Caddy
>> Menomonie, WI.
>>
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--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmcrvparts.com
1-800-752-7502
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Jim Kanomata
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www.appliedgmc.com
1-800-752-7502

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