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post #1 of (permalink) Old 05-09-2000, 11:27 AM
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I need Help with a buick 455 swap

How hard would it be to put a Buick 455 in an 83 3/4 ton GMC with a 350 in it now. I can get a running 455 from the junkyard for $300, and the 350's rings never seated right, so I was thinking I could swap in the 455. I know I need a transmission adapter, but what I really want to know about is the motor mounts. Do I need to weld new ones in? Will the buicks mounts be in the same spot? I really need to gather all the info so when I yank the 350 I won't be surprised by what I find. P.S. Advance Adapters was no help.

Thanks everyone,
George

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post #2 of (permalink) Old 05-09-2000, 07:31 PM
RolngThun
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Re: I need Help with a buick 455 swap

I really like the Buick 455, king of torque.
You didn't say auto or stick, if auto I would recommend having your output shaft installed into a B.O.P. case, instead of messing with the adapters. You will probally have to install the Buick frame mounts to match the engine. I weld,some find ways to bolt.
It has been almost ten years since I have messed with them, but some things that come to mind are, fan offset different for Chev shroud, starter may be on the other side as well as fuel pump. I put one in a 79 Grand Prix and had clearence problems with the oil filter and crossmember.

post #3 of (permalink) Old 05-09-2000, 08:50 PM
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Re: I need Help with a buick 455 swap

The 78 to 80 Diesels had Olds engines. The mounting is close and I don't think it's going to be hard.

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post #4 of (permalink) Old 09-24-2011, 03:51 AM
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Quote:
Originally Posted by RolngThun View Post
I really like the Buick 455, king of torque.
You didn't say auto or stick, if auto I would recommend having your output shaft installed into a B.O.P. case, instead of messing with the adapters. You will probally have to install the Buick frame mounts to match the engine. I weld,some find ways to bolt.
It has been almost ten years since I have messed with them, but some things that come to mind are, fan offset different for Chev shroud, starter may be on the other side as well as fuel pump. I put one in a 79 Grand Prix and had clearence problems with the oil filter and crossmember.
i didn't realize that i will be finding a lot of answers in here from a year old thread which already filled with cobwebs and skeleton from the thread makers.lol anyway no questions for now i am just depending on the information that i get in here. like another dead thread like this http://forums.off-road.com/jeepster-...r-club/113604-buick parts-350-flywheel.html


Last edited by ronierogers; 09-25-2011 at 06:31 AM.
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