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#223548 01/05/2007 12:20 PM
Joined: Jul 2005
Posts: 71
K
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K Offline
Joined: Jul 2005
Posts: 71
What problems are to be expected fitting a 270 into a 39 or 40 pickup?
I think I've read that the radiator has to be moved forward due to the extra length of the GMC engine. Is this right,& what is involved regarding hood modifications etc? Are there any alternative solutions? I'm not concerned about running gear adaptions, as long as it is realistic to physically fit the engine into the engine bay.
Do the same problems exist in the heavier trucks of the same years?
Thanks - (all enquiries for a future project)

#223549 01/05/2007 9:25 PM
Joined: Oct 2003
Posts: 5,152
O
Cruising in the Passing Lane
Cruising in the Passing Lane
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Posts: 5,152
If you check the tech tips on this site there is quite a bit of info about putting a 302 (270 is physically the same) into Chevy trucks.


1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble...
#223550 01/05/2007 9:43 PM
Joined: Dec 2002
Posts: 3,441
Moderator - The Electrical Bay
Moderator - The Electrical Bay
Joined: Dec 2002
Posts: 3,441
283 is much shorter


Another quality post.
Real Trucks Rattle
HELP! The Paranoids are after me!
#223551 01/06/2007 12:13 AM
Joined: Mar 2005
Posts: 170
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Here are some lessons learned I wrote up after putting a '55 235 into my '40 GMC:

http://oldgmctrucks.infopop.cc/eve/forums/a/tpc/f/462107036/m/4471020781

Steve


See my 1940 Canadian GMC:
http://community.webshots.com/user/ndnchf
#223552 01/06/2007 1:58 AM
Joined: May 2001
Posts: 7,438
Extreme Gabster
Extreme Gabster
Joined: May 2001
Posts: 7,438
He didn't ask about a 283 and there's a lot of difference between putting a short motor in a long engine bay and putting a long motor in a short engine bay.

Ken, here's a link to the Tech tip Old Sub mentioned.

If you haven't already, join the discussion group at oldgmctrucks.com
There's a guy there running a 302 in a '37 Chevy truck.


"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.
#223553 01/06/2007 7:42 AM
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Posts: 71
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Thanks fellas

Rusty - I'm not anti-V8, but I'd go 270 for this project to stay closer to original & still have reasonable pulling power.

We've got several 270's lying around just waiting for a use.

I've joined over on oldgmctrucks.com - Thanks Cletis, I'll search through - excellent site there too

#223554 01/07/2007 8:02 AM
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Let us know how it comes out, I'm about to put a GMC 302 into my '50 1/2 ton. I'm excited. I'm probably going to put a Howard log manifold on it, I have a set of Holley 94's in my garage just waiting for a home.


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