75 Caddy in the 15's

[keyofdavid88]

massive torque, got the jump on the olds out of the hole, and the tranny is so smooth you can barely hear the gear changes

[crezzyman]

What version heads do you have? Are they the aluminum race heads, or just worked over iron heads?

[Elieko]

I'm pretty sure he went w/the "Pro Street" heads...which are reworked iron heads and port matched aluminum intake...still stock compression

[crezzyman]

Stock compression on that would be around 8.5:1, right? I have a '76 Coupe DeVille, and it's around 8.25:1 or 8.5:1 I believe.

[Fleet472]

'74s have an 8.25:1 compression.

'75-'76s have an 8.5:1.