identify gear ratio without code or disassembly

Ben, your big block was intended for more HP the the newer SB. There is the difference in drive shaft size.

yeah thats what i figured..

no i have to see if I can find out all the drive shaft sizes before i can finalize my printable cutout..

I confirmed the 2.50" od in the specification section of my AIM. maybe other members will check their AIMs for their year car.
Hank

hank51 said: if you want, email me your data and maybe I can help you organize it or suggest a way to that you haven't thought of. Hank

the data is available in the link in the first message..

im trying to maker a printable cutout that you could take and tape on your drive shaft to do the gear id test..

since it involves a ratio based on circumference i would need to have a cutout for each drive shaft size.. not a problem once i can find all the corvette DS sizes

for now I have one size for 68-79 BB, one for SB, and possibly a diff size for 80-82