Would 14:1 CR be too high for a street car and pump gas, n/a?
10.5 c/r on my 489 - 22 degrees initial on crank and 38 degree total, and vacumn advance - never 'pinks' on Shell VPower :tup: dosen't like ANY other gas :tdown: (including the higher octane BP stuff!) and WILL complain :woohoo:10.3-1, thats exactly what i'm running on my s/block chevy,
normally run 38 degrees total timing on super unleaded,
occasionally put in regular 95 octane, havn't suffered any detonation.....yet.
I'll have a look. Been quoted £275 for a set that give 10.3:1[/QUOTE]Weisco do a good forged of the shelf piston for a BBF @ GOOD MONEY.