Ok, Wallace is the outlier. Classical, Butler and Summit all say 8.46:1. Wallace has the value 6.6 in by default for valve relief (guessing due to TRW pistons being +6.6). If I change that value to 10 then I get 9.2:1 on his calculator. If I use -10 I get something over 11:1 so 10 or +10 is right. Seems his calculator is just off for some reason.
__________________
Jimmy
www.firebirdgallery.com
2002 WS6 M6 Trans Am - original owner
1973 Trans Am 455/4-speed
1971 Formula 400/400
1969 GTO 400/400 - 3rd owner
1968 Firebird Convertible 350/200R4
POCI - AAC
|