September 7, 2010
Replacing Chevy small block engine?
Haupt is? Chlich this? About Flex panels f? R an automatic trans, f? R up 1985 Camaro. The old engine was a 350 V8 with 190hp, it had a 153 tooth flex plate. The new engine is a 383 stroker that must have on the 168-toothed flex plate. The new engine also comes with the starter and everything to run up already s? Chtig. Then w? Rde this work with my gear, although my other engine uses a 153 tooth flex plate. Thanks again !!!!!!
Filed under Engines by on Sep 7th, 2010. Comment. 
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Comments on Replacing Chevy small block engine?
can’t think of why it wouldnt work ok.,,,.congrats on your new power,,,
Your transmission doesn’t care what engine you have.
The yokes on the torque converter are all the same
Make sure the bolt holes on the converter match the flex plate. (they should)
There are typically two or three sets of holes in the flexplate to allow it to be used in many different engines.
Good Luck!
Sure it would.
You need to use the correct plate for the engine because the balancing could be different and in 85 they changed the seal design. As far as the transmission once you got into the 1960′s GM had 2 bolt patterns for auto trans. There was just a small diameter and large. IIRC there was only about a 1/4 difference so often times you dont notice till its too late. This was also usually the difference in the tooth count also. The Chev blocks have bolt holes for both starters. One has the bolts straight across from each other and the other has them offset. Most of the aftermarket flex plates are ‘dual pattern’ meaning there should be 6 holes and you can use either transmission. I believe the allison transmission stuff is different. The 400′s (3L80) were the big patteren. The 200′s were the small and I think the 350′s(700 4L60) could go either way.