[GmtGmt]

Thanks

I have a chevy TH400 with an adapter thats allready fitted to the engine

Originally Posted by cerial

If your using the TH400 then the only difference is the tailshaft. Easy enough to swap out in most cases. Worst case you shorten a driveshaft.



If your planning on keeping the sm465 that is where things get a bit tricky. Cadco has a flywheel and the thing is a Heavy sob. It is also quite thick.
https://cad500parts.com/product-category/driveline/
Call them to make sure your getting the right stuff for the application

I had a Lakewood bell(opened up to the sm465's larger bore), 1/8" block protectior, adapter plate, the thick flywheel and from there it was a basic BBC 454 clutch. But I only had like 1/16" between the block protectior and the flywheel. A mini starter was needed also because the Cad starter nose would not fit inside the lakewood.

Plan on dropping $500-600 in cad co parts plus another $200 for a BBC clutch.Watch the tooth count on the ring gear or your going to need to play with the starter also.


I have had 3 500's and 2 472's in squares. I had my last 472(68High C) sitting in the shop and finally got rid of it this summer. Those Cad engines blocks love to drink and in a square plan on 6 and if your lucky 8mpg. They are fun in a mudtruck where you want that torque. But they do have issues with oiling, valves and everything is more expensive then a BBC. An LS is a much easier option especially if you want to keep the sm465. Bolt in deal with the parts to bolt the engine up to that sm465 about 1/2 the price of the cad stuff.