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I have a tired 366 Chevy big block in one of my trucks. I have a fresh rebuilt 454 out of a motor home. I have heard that a 366 and 454 flywheel have the same weights on the flywheel and are inter changeable but no one I talk to is sure 100%. Lots of experience with 427's and 454's but not a lot with a 366. Trying to get out of buying a new flywheel.
No they are Not who ever told you that is way Wrong ..... the 454 is external all other BBC366.396.402.427. are internal. a 366 is a 10.200 tall deck block 427 with a very small bore and both are internal balanced
NAPA shows the 454 flexplate, jobber @ $49.87 and the flywheel @ $154.02.
Even better because I have a rebuilt 427 tall deck truck engine. Because of the false info given to me that the 366 was externally balanced with the same flywheel as the 454 I thought I couldn't use it with the flywheel that is in the truck. Thanks a lot for the correct information.
The only other Chevy engine, that I'm aware of, that is externally balanced is the small block 400.
the 350 sb with one piece rear seal are external rear and internal front
yes ....But .....i was taking BBC and that what he was asking about not small blocks:HMMM: yes i know a ll bout the 1/2 and 1/2 small and 400s blocks ;) no sence getting the guy befuddled
502 are toQuote:
Originally Posted by NTFDAY