[quote
Gee, I'd hate to think what my CR is with 80 lbs. cranking pressure!
I am willing to use custom pistons so long as they are not $200 each. That being said, 12:1 is a bit much for my needs if I end up N/A this year.
Paul
The 12:1 & 8.4:1 is just an extreem example I did.
Normally if you run the 307 pistons I have & a 194 head compression would be around 10.5:1
Open chamber head 9.5:1 Just an approximation.
It's been a long time guys when I put together this engine.
So the numbers are not right in front of me & I'm too busy baby sitting my kids all the time. They drive me crazy.
It's been so long when I checked last the cranking compression when I had 8.4:1 cranking compression was probably closer to 130 psi
But with the 12.0:1 I definatly remember checking a few times 220-225 PSI. Absolute torque monster ,3 Weber DCOE's helped out alot,really torqued & twisted my Camaro chassis pretty good w/that combo.
MBHD
