big block engine pick

coincidentally · 10-28-2002, 04:12 PM

i'm going to check out a big block engine a guy wants to sell me tomorrow and wanted to know if there was anything I should look out for. At the moment I dont know if it is a chevy buick or olds big block. I do know that it is a 455 though. Are some models of 455's bad? are the all pretty much the same?

any help would be appreciated.....

kennyw · 10-28-2002, 04:51 PM

There is a difference between a Buick and Pontiac 455 (chevy never made a 455 that I know of). I think the Pontiac motor would be the better of the 2. Either way it will require changing your tranny or getting an adapter for the BOP bolt pattern.

fortcollinsram · 10-28-2002, 08:20 PM

If you have the ability to crank it over, check the compression on the cylinders...455 sounds like a BOP engine to me as well...look at the plugs and look for signs of oil...um...thats about it...

Chris

imiceman44 · 10-29-2002, 11:46 AM

Buik, Pontiac, and Oldsmobile all did a 455, each is different, but they all have the same bolt pattern.
If you can wait till tonight I can get the article I have on all of them and let you know which is better and what to look for.

ABO · 10-29-2002, 06:20 PM

455 are only BOP engines. Try to get the numbers from the block, I know Olds engines have the block number on a flat area behind the timing cover and the block(under the water neck). The heads are lettered towards the front(to the left of the first plug hole). Your buying it blind so other than the compression,pulling a plug or a head theres really nothing you can do to check, just gotta trust him.

10-28-2002, 04:12 PM	#1
coincidentally Registered User Join Date: Apr 2001 Location: MA, USA Posts: 53 i Trader: (0 )	big block engine pick i'm going to check out a big block engine a guy wants to sell me tomorrow and wanted to know if there was anything I should look out for. At the moment I dont know if it is a chevy buick or olds big block. I do know that it is a 455 though. Are some models of 455's bad? are the all pretty much the same? any help would be appreciated.....

10-28-2002, 04:51 PM	Posted in reply to coincidentally's post "big block engine pick" #2
kennyw Intelligent Redneck Join Date: Jun 2002 Location: --WA-- Posts: 10,953 i Trader: (57 )	Re: big block engine pick There is a difference between a Buick and Pontiac 455 (chevy never made a 455 that I know of). I think the Pontiac motor would be the better of the 2. Either way it will require changing your tranny or getting an adapter for the BOP bolt pattern.

10-28-2002, 08:20 PM	Posted in reply to coincidentally's post "big block engine pick" #3
fortcollinsram Team Whiskey Bent Join Date: Nov 2001 Location: Fort Collins, CO Posts: 2,261 i Trader: (0 )	Re: big block engine pick If you have the ability to crank it over, check the compression on the cylinders...455 sounds like a BOP engine to me as well...look at the plugs and look for signs of oil...um...thats about it... Chris

10-29-2002, 11:46 AM	Posted in reply to coincidentally's post "big block engine pick" #4
imiceman44 Registered User Join Date: Aug 2002 Location: Sacramento, CA Posts: 7,188 i Trader: (15 )	Re: big block engine pick Buik, Pontiac, and Oldsmobile all did a 455, each is different, but they all have the same bolt pattern. If you can wait till tonight I can get the article I have on all of them and let you know which is better and what to look for.

10-29-2002, 06:20 PM	Posted in reply to coincidentally's post "big block engine pick" #5
ABO Registered User Join Date: Jan 2001 Location: The Burgh Posts: 77 i Trader: (0 )	Re: big block engine pick 455 are only BOP engines. Try to get the numbers from the block, I know Olds engines have the block number on a flat area behind the timing cover and the block(under the water neck). The heads are lettered towards the front(to the left of the first plug hole). Your buying it blind so other than the compression,pulling a plug or a head theres really nothing you can do to check, just gotta trust him.

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