Home » Public Forums » GMCnet » Chevy 454 in a GMC ? (Hello, anybody has this type of engine already installed ?)
 Chevy 454 in a GMC ? [message #194040] |
Wed, 26 December 2012 10:30  |
ricogomez
Messages: 19
Registered: July 2008
Location: Houston, Texas
Karma: 0
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I was wondering if anybody has done this type of install,
I have acces to a already rebuild Chevy 454,
does anybody makes the Trans adapter ?
any input ?
Rico Gomez
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| Re: [GMCnet] Chevy 454 in a GMC ? [message #194047 is a reply to message #194040] |
Wed, 26 December 2012 11:16  |
powerjon
Messages: 2446
Registered: January 2004
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Rico,
Yes, it has been done many times and there are a fair number of GMC with the Chevy type motor installed up to any including the 8.1. Oil pan modifications are the hardest to complete. Very little clearance between the crank and the intermediate drive shaft. By the time and cost that you would put one in a built up 455 is cheaper. You can pick your poison.
JR Wright
78 Buskirk Stretch
Michigan
On Dec 26, 2012, at 11:30 AM, Rico Gomez <ricogomez@hazmatpacking.com> wrote:
>
>
> I was wondering if anybody has done this type of install,
> I have acces to a already rebuild Chevy 454,
> does anybody makes the Trans adapter ?
> any input ?
> --
> Rico Gomez
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J.R. Wright
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GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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| Re: [GMCnet] Chevy 454 in a GMC ? [message #194050 is a reply to message #194045] |
Wed, 26 December 2012 12:01 |
Jim Bounds
Messages: 842
Registered: January 2004
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Brother, I've climbed that mountian, fell off the other side and vowed to all who were effected that I would never let someone do that again!
Besides the 455 Olds motor being a stronger motor than the 454-- just compare the size of the crank-- the "kit" & I use that word lightly that Dyno Sources ripped everyone off making required a weight lobe of the crank be removed and the rotating assembly rebalanced on the flywheel-- heck that is stupid! Say the motor does run like a top it's entire life, who would touch it to rebuild it when needed? Yes, routing the drive shaft under the motor-- you actually precision cut a hole in the oil pan, sleeve and weld the hole then build up the drive shaft through the hole-- again, that's nuts! The motors Buzkirk installed were marine application crate motors that really were not suited for road use which made the sort lived.
Spend the same as you would messing with all of that into a roller cam 455 with the goodies and you will not only save big bucks (I documented 186 actualy working hours to install the 454 Chevy we did-- you will have a pulling monster 455. GM knew what they were doing when they selected the 455 Olds motor for the GMC-- huge water jackets, huge crank as I said-- low compression heads to run on affordable gas-- high nickel content block and there are plentry of parts. Building a bolt in motor is just common sense, that way you may talk someone else into working on it one day when you don;t want to anymore.
There is absolutly nothing wrong with a stock drive train, it's all balanced well, everything fits and there are no "wheels to invent". We only build rooler cam motors to adapt the motor to the new low ZDDP oils, put restrictors to keep the oil on the crank, pay serious attention to the valve train and use only the best parts and machine work. Do all of that and you will not need to think about some other motor!
Of course if you just have a hankering to sleep under the coach, go for it man...
Jim Bounds
--------------------------
________________________________
From: Richard Rath <traveler@raths.com>
To: gmclist@temp.gmcnet.org
Sent: Wednesday, December 26, 2012 11:59 AM
Subject: Re: [GMCnet] Chevy 454 in a GMC ?
For what its worth, Summit offers an adaptor that would fit the chev engine to the 475 transmission. <$100. Dont know about oil pan clearance. GMC coop once offered a conversion, but it apparently wasn't very popular and rather pricey. Jim B could probably give you more details. I believe he prefers to stick with the Olds and upgrade it somewhat. Just a thought. :)
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| Re: Chevy 454 in a GMC ? [message #194055 is a reply to message #194040] |
Wed, 26 December 2012 13:47 |
Cadillackeeper
Messages: 464
Registered: October 2012
Location: Fort Lauderdale
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Olds 455 or 500 Cad,too bad those salt flat guys did not use a Cad.454 Will get one into thee 6 MPG range!Even the Cad can be
double digits on mileage.
77 455 Elaganza II and 67 Animal, Built 500 Powered Eldo
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| Re: [GMCnet] Chevy 454 in a GMC ? [message #194059 is a reply to message #194040] |
Wed, 26 December 2012 14:16 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Well, to each his own - and I think somebody did that at considerable cost. Personally, I think the 455 is a better choice in this service than a Tonowanda Turd anyway. They're junque without major upgrades. Build the 455 right and don't worry. Save the TT for your pickup.
--johnny
'76 23' transmode norris
'76 palm beach
From: Rico Gomez <ricogomez@hazmatpacking.com>
To: gmclist@temp.gmcnet.org
Sent: Wednesday, December 26, 2012 11:30 AM
Subject: [GMCnet] Chevy 454 in a GMC ?
I was wondering if anybody has done this type of install,
I have acces to a already rebuild Chevy 454,
does anybody makes the Trans adapter ?
any input ?
--
Rico Gomez
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Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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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] Chevy 454 in a GMC ? [message #194061 is a reply to message #194059] |
Wed, 26 December 2012 14:27 |
Jim Bounds
Messages: 842
Registered: January 2004
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Ah Men brother,
Jim Bounds
--------------------
________________________________
From: Johnny Bridges <jhbridges@ymail.com>
To: "gmclist@temp.gmcnet.org" <gmclist@temp.gmcnet.org>
Sent: Wednesday, December 26, 2012 3:16 PM
Subject: Re: [GMCnet] Chevy 454 in a GMC ?
Well, to each his own - and I think somebody did that at considerable cost. Personally, I think the 455 is a better choice in this service than a Tonowanda Turd anyway. They're junque without major upgrades. Build the 455 right and don't worry. Save the TT for your pickup.
--johnny
'76 23' transmode norris
'76 palm beach
From: Rico Gomez <ricogomez@hazmatpacking.com>
To: gmclist@temp.gmcnet.org
Sent: Wednesday, December 26, 2012 11:30 AM
Subject: [GMCnet] Chevy 454 in a GMC ?
I was wondering if anybody has done this type of install,
I have acces to a already rebuild Chevy 454,
does anybody makes the Trans adapter ?
any input ?
--
Rico Gomez
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| Re: Chevy 454 in a GMC ? [message #194079 is a reply to message #194040] |
Wed, 26 December 2012 20:28 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Big block Chevys are called slang 'boat anchors' by my circle of mechanic friends. To me, the valve train geometry did not lend itself to a long lasting motor. I think GM sunk more $ into each Olds motor.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: [GMCnet] Chevy 454 in a GMC ? [message #194132 is a reply to message #194059] |
Thu, 27 December 2012 07:41 |
Steven Ferguson
Messages: 3447
Registered: May 2006
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And therein lies the problem. The 454 might be a better choice, but the
availability is dwindling. 454s are like kitty litter and the least
expensive rebuilt out there as a result of that fact. The pan
modifications are an absolute bear, but once accomplished, you have a pan
that bolts on any Chev BB.
Having said all that, I have a 455 that I pulled out of my GMC that was
running well when removed. The heads (J) have been completely gone through
and are sitting next to the engine in my shop. Any takers?
On Wed, Dec 26, 2012 at 1:16 PM, Johnny Bridges <jhbridges@ymail.com> wrote:
> Well, to each his own - and I think somebody did that at considerable
> cost. Personally, I think the 455 is a better choice in this service than
> a Tonowanda Turd anyway. They're junque without major upgrades. Build the
> 455 right and don't worry. Save the TT for your pickup.
>
> --johnny
> '76 23' transmode norris
> '76 palm beach
>
> From: Rico Gomez <ricogomez@hazmatpacking.com>
> To: gmclist@temp.gmcnet.org
> Sent: Wednesday, December 26, 2012 11:30 AM
> Subject: [GMCnet] Chevy 454 in a GMC ?
>
>
>
> I was wondering if anybody has done this type of install,
> I have acces to a already rebuild Chevy 454,
> does anybody makes the Trans adapter ?
> any input ?
> --
> Rico Gomez
> _______________________________________________
> GMCnet mailing list
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--
Take care,
Steve
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| Re: [GMCnet] Chevy 454 in a GMC ? [message #194190 is a reply to message #194132] |
Fri, 28 December 2012 07:09 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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They're dwindling - but there's still plenty out there. Note, you have one ready to go. As to the availability of rebuilt TTs, there's lots because there's lots installed, and they break relatively often.
I am reminded of buying a 1600 Datsun engine in the early 70s when my wife ran ours home sans radiator hose and destroyed it... although it got her home and was still running. Kelly's Junk Yard quoted me a hundred cheaper for a 1600 Datsun engine than the same size Toyota. I asked him why,he said the Datsuns don't break much, we got lots of them... but the Toyotas are always in demand.
I think there are better choices for a swap, but I don't think there's a need for swapping any time soon.
--johnny
'76 23' tranmsmode norris
'76 palm beach
From: Steven Ferguson <botiemad11@gmail.com>
To: gmclist@temp.gmcnet.org
Sent: Thursday, December 27, 2012 8:41 AM
Subject: Re: [GMCnet] Chevy 454 in a GMC ?
And therein lies the problem. The 454 might be a better choice, but the
availability is dwindling. 454s are like kitty litter and the least
expensive rebuilt out there as a result of that fact. The pan
modifications are an absolute bear, but once accomplished, you have a pan
that bolts on any Chev BB.
Having said all that, I have a 455 that I pulled out of my GMC that was
running well when removed. The heads (J) have been completely gone through
and are sitting next to the engine in my shop. Any takers?
On Wed, Dec 26, 2012 at 1:16 PM, Johnny Bridges <jhbridges@ymail.com> wrote:
> Well, to each his own - and I think somebody did that at considerable
> cost. Personally, I think the 455 is a better choice in this service than
> a Tonowanda Turd anyway. They're junque without major upgrades. Build the
> 455 right and don't worry. Save the TT for your pickup.
>
> --johnny
> '76 23' transmode norris
> '76 palm beach
>
> From: Rico Gomez <ricogomez@hazmatpacking.com>
> To: gmclist@temp.gmcnet.org
> Sent: Wednesday, December 26, 2012 11:30 AM
> Subject: [GMCnet] Chevy 454 in a GMC ?
>
>
>
> I was wondering if anybody has done this type of install,
> I have acces to a already rebuild Chevy 454,
> does anybody makes the Trans adapter ?
> any input ?
> --
> Rico Gomez
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> _______________________________________________
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> Unsubscribe or Change List Options:
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>
--
Take care,
Steve
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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] Chevy 454 in a GMC ? [message #194281 is a reply to message #194280] |
Fri, 28 December 2012 19:42 |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
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Senior Member |
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Les,
When you're talking 455 in the BOP family of engines. BOP stands for Buick, Olds & Pontiac. They all had a 455 cu in motor and they all had 455 cu in and the same bell housing, but that is where the similarities end. Everything else was different. As for the Olds 455 it had differences depending on what it was used in and what it was used for. There is a real good Oldsmobile form with every about the Olds eng, heads and all the good parts, but I could find the link. Maybe someone else has that link. The 455 for the MH is different from the car version. The Toro motor and trans is the one you want to start with. MH typically uses the "J" heads and has a different cam. The Distributor is set up differently. And a few other subtle changes. I am sure that other will comment also.
JR Wright
78 Buskirk Stretch
Michigan
On Dec 28, 2012, at 7:50 PM, Les Leach <les.leach@yahoo.com> wrote:
>
>
> So with this discussion about the 455, is there a difference between the Tornado motor and the motorhome motor? If I recall correctly, a 455 motor was used in other GM model cars. Are they the same? I'm sure there have been numerous discussions about the 455 motor, so can someone point me to a few so I can 'educate' myself?
>
> Thanks and Happy New Year
> Les
> T.O. CA
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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| Re: [GMCnet] Chevy 454 in a GMC ? [message #194283 is a reply to message #194281] |
Fri, 28 December 2012 20:24 |
Who_dun_it
Messages: 176
Registered: April 2007
Location: Thousand Oaks, CA
Karma: 1
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Thank you for the info. Now I can narrow my search for information.
Les
| powerjon wrote on Fri, 28 December 2012 17:42 |
Les,
When you're talking 455 in the BOP family of engines. BOP stands for Buick, Olds & Pontiac. They all had a 455 cu in motor and they all had 455 cu in and the same bell housing, but that is where the similarities end. Everything else was different. As for the Olds 455 it had differences depending on what it was used in and what it was used for. There is a real good Oldsmobile form with every about the Olds eng, heads and all the good parts, but I could find the link. Maybe someone else has that link. The 455 for the MH is different from the car version. The Toro motor and trans is the one you want to start with. MH typically uses the "J" heads and has a different cam. The Distributor is set up differently. And a few other subtle changes. I am sure that other will comment also.
JR Wright
78 Buskirk Stretch
Michigan
On Dec 28, 2012, at 7:50 PM, Les Leach <les.leach@yahoo.com> wrote:
>
>
> So with this discussion about the 455, is there a difference between the Tornado motor and the motorhome motor? If I recall correctly, a 455 motor was used in other GM model cars. Are they the same? I'm sure there have been numerous discussions about the 455 motor, so can someone point me to a few so I can 'educate' myself?
>
> Thanks and Happy New Year
> Les
> T.O. CA
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