Baja71
Bronco Guru
- Joined
- Oct 16, 2004
- Messages
- 2,908
I'm thinking with a SBF 302/5.0 that every head chamber cc equals a change of one tenth of the compression ratio.
Just as an example: If 53cc head happens to give 10:1 then a 63cc head would be 9:1. sound correct as far as the difference between the two? (Assuming same pistons and everything.)
My head swap is from a 65cc head, which yields a 9:1 compression ratio on MY particular 5.0 shortblock, according to Ford Racing.....to a stock C9TE 58cc head which should yield a 9.7:1 ratio. Correct?
Head gurus?
Just as an example: If 53cc head happens to give 10:1 then a 63cc head would be 9:1. sound correct as far as the difference between the two? (Assuming same pistons and everything.)
My head swap is from a 65cc head, which yields a 9:1 compression ratio on MY particular 5.0 shortblock, according to Ford Racing.....to a stock C9TE 58cc head which should yield a 9.7:1 ratio. Correct?
Head gurus?