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Old 01-18-2006, 08:46 PM
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Big chev 454 and small chev 350 bolt pattern

Hey guys
just wanting to know if there is a difference in the small block chev 350 bell housing's and the big block 454 bell housings...

my step dad said he had an elcamino once and it had a 454 in it, and he said his buddy just threw in a 350 and they had the same bolt patterns. Just wanting to know the truth on this. Sounds odd to me
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Old 01-18-2006, 08:50 PM
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Yup,the bellhousing flange as well as the motor mounts are the same in both bigblocks and smallblock Chevy's.Even in applications where it lists specific bigblock mounts,the difference is ususally only a fraction of an inch and a bigblock will sit fine on the smallblock mounts.
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Old 01-18-2006, 08:51 PM
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Quote:
Originally Posted by boneyard Buick
Hey guys
just wanting to know if there is a difference in the small block chev 350 bell housing's and the big block 454 bell housings...

my step dad said he had an elcamino once and it had a 454 in it, and he said his buddy just threw in a 350 and they had the same bolt patterns. Just wanting to know the truth on this. Sounds odd to me
yep, they have the same bolt pattern...
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Old 01-18-2006, 08:53 PM
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ok, thats sweet.

Let me tell ya what im doin here. I got a chev truck with a 454 in it on propane with a 4 spd standard. The 454 is killin me for fuel. So if i just pull the motor the 350 should bolt right up?

if so..what about flywheel etc..?
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Old 01-18-2006, 09:07 PM
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Well theirs smitty. Didnt know you came here?
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