Compression Ratio after Head Swap?
Thread Starter
Pro
Joined: Feb 2007
Posts: 548
Likes: 1
From: Victoria VA
Compression Ratio after Head Swap?
I have a stock 77 Vette can some one tell me if I go with a small combustion Chamber head what will be the compression ratio after head swap?
58CC
64CC
67CC
Also are the pistons in the stock 77 flat top? Wondering about clearence problems.
Thanks
58CC
64CC
67CC
Also are the pistons in the stock 77 flat top? Wondering about clearence problems.
Thanks
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
- If L48 it has DISH pistons ... Aluminum 58cc are your best choice & make about 10:1scr.
- If L82 it has FLATTOP pistons ... 64/67cc are best choice & make about 10:1 / 9.8:1.
- Neither dish nor flat pose any clearance problem w/ heads.
- If you raise compression on L48 as above, you should also install more cam ... L82 cam will do but could use more cam too.
