Originally Posted by B1Frank
I have seen the new motorcycle engine's have 11.0 on the the compression, it is all about the volume you have in the engine .


My new 6.4 Challenger is 10.9

1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5