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Old 12-06-2007, 11:18 PM
65 c10, 283 tbi, 700r4, pb, ps
 
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pontiac in the chevy?

Has anyone put a pontiac engine, I beleave It's a 350 in to a 65 c10 chevy truck. what kind of motor mounts should i look for?

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Old 12-06-2007, 11:38 PM
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Chevy did it from the Factory in the mid 50's w/ V8 trucks. they ran Pointac V8's b4 the SBC came out.
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Old 12-07-2007, 07:15 AM
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There was a later model truck on eBay a while back with a Poncho 400 in it.

The motor mounts are about in the right place, they are just further back on the block. Since it is a 350, I don't think you are planning on racing it. I would make some 1/4" plates which would bolt to the block where the original mounts went and have holes for mounting sbc mounts forward. If you have access to a sbc, measure from the bell housing mount to the motor mount holes to get the correct locations.

Speaking of bell housing, the Poncho has a different pattern than Chevy. You will either need a bell housing for a stick car or a BOP automatic (you could use an adapter plate on the Chevy auto).

BTW, GMC used Pontiac engines after the sbc came out. 1955 -1958. The Pontiac V-8 and the Chevy V-8 came out the same year, 1955.
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Old 12-07-2007, 09:45 AM
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keep in mind starter is o different side aswell will need to extend your starter wire!
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Old 12-07-2007, 01:58 PM
65 c10, 283 tbi, 700r4, pb, ps
 
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yes i planning on using a 700r4 that's in the truck, with adapter. I don't really understand what your talking about on the motor mounts, I guess when i start trying to put it in i'll find on. And yes gmc did have pontiac engines but i beleave the frames were wider on the 55-59 trucks than 64-66, so the mounts probably wouldn't work.
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Old 12-07-2007, 06:33 PM
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Quote:
Originally Posted by redsdad
BTW, GMC used Pontiac engines after the sbc came out. 1955 -1958. The Pontiac V-8 and the Chevy V-8 came out the same year, 1955.
I knew it was somthing like that.. do you know if the GMC 270/302 6cyl was the only engine GMC made for itself? I know GMC had the 305 V6 first, but Chevrolet adopted it.
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Old 12-07-2007, 08:55 PM
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The Pontiac-powered GMCs used the older mounting system with wide-based bellhousing mounts and a single front mount. Nothing you'd want to use in your conversion. I can send you pics of my '57/347 mounts if you need them.

Unless you have a 4x4, you might want to bypass the 700R4 & get a 200R4 because, being dual-pattern, it will bolt right up to your Tin Indian, and IMHO its a better trans.

Last edited by hardhatz; 12-07-2007 at 09:48 PM.
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Old 12-07-2007, 10:51 PM
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Quote:
Originally Posted by chevys65
I don't really understand what your talking about on the motor mounts, I guess when i start trying to put it in i'll find on.
The blocks are about the same width where the mounts go. The sbc mounts are further forward on the block than the location of the mounts on the Pontiac engine. You simply cut two flat plates, one for each side of the block. You drill holes to mount it to the block where the mounts would go and then you drill holes in the plates further forward to mount sbc motor mounts to the plates. Or you can move the frame mounts back until they line up with the Poncho motor mounts. Depending on the frame configuration, the plates on the sides of the block may be easier.
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Old 12-07-2007, 10:55 PM
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Quote:
Originally Posted by matt167
I knew it was somthing like that.. do you know if the GMC 270/302 6cyl was the only engine GMC made for itself? I know GMC had the 305 V6 first, but Chevrolet adopted it.
I am not sure if it was production or not, but they did make a V-12 which was two of the V-6 engines stuck together in a common block.

Sneaky Pete V12 hotrod
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Old 12-07-2007, 11:32 PM
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Here's the V-12 info:
http://www.6066gmcguy.org/Jolly-702v12.htm

If it was me, I'd get Pontiac motor mounts and the towers they sit on from a donor car. I'd bolt them all to the engine, set it in place, and adapt between your frame & the Pontiac towers in steel.
BTW, the left side exhaust manifold might be a little tricky to clear your steering, so have it in place when you determine your engine location.
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Old 12-08-2007, 03:29 PM
65 c10, 283 tbi, 700r4, pb, ps
 
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ok i git what your saying now about the mounts redsdad thanks. I have i question on the engine, the oil filter sticks out sideways is this one of the crappy, pontiac 301?
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Old 12-08-2007, 05:38 PM
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quote; "I have i question on the engine, the oil filter sticks out sideways is this one of the crappy, pontiac 301?"

Yep! You'ld be better off finding a 400. The 301 performance can be improved, but it's not worth it.
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Old 12-08-2007, 10:07 PM
65 c10, 283 tbi, 700r4, pb, ps
 
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that sucks, atlest i didn't pull it out yet. guess it time to start looking for a diff engine again. ty for all the help
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Old 12-10-2007, 12:31 AM
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There's a couple of guys at www.67-72chevytrucks.com/vboard that have, or have had, Pontiac engines in trucks similar to yours. Might see if you can pry some info out of them if you can.
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