Re: Why the overbore from 396 to 402
JoeC got it right. It was emission rules related.
The GM literature (parts books, manuals, etc) got real confusing, calling the BB a 400 alot of the time.
I assume the new block handled the .030 overbore.
Interestingly, the late 69 blocks did not use the 70 3 digit code format, but the late 69 axles did.
__________________
Kurt S - CRG
|