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Topic: reversing pistons (Read 2761 times) previous topic - next topic

reversing pistons

Reply #15
About 10:1 or so. My GT40Ps have 60 cc chambers and the bore on my 5.0 is .030 over (306) According to the machiene shop that built the engine it's got close to if not a bit more than 10:1 compression. I run 93 with the timing set at 14* with no knock problem.
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.

reversing pistons

Reply #16
solid, so thats probably about where mine will be if i do all that. thanks guys

-Keith
1988 Thunderbird sport
2004 Ford F150 Lariat
2008  Chevrolet Cobalt Sport
2007 Suzuki DR-Z400S dual sport/Supermoto
1988 Thunderbird LX - sold
1988 Mercury Cougar XR-7 with GST kit - gone