how to ID 1970 BB or SB?

[kamarossrs]

on a 1970 without the build sheet how can you you tell what engine was orig there? tach redline? any other things to look for? what redlines were for what engines? thx!!!

 

[JohnZ]

Larger front stabilizer bar (SB was 3/4"), rear stabilizer bar (no SB's ever had one, all BB's did), bolted diff U-joint caps instead of U-bolts, copper/brass radiator with no expansion tank, many other "clues" depending on the year. All those items can be converted, however, although they usually miss a few.

 

[81 Corvette]

80 psi oil pressure vs. 60 for a sbc, at least according to some vette mag i read this weekend