Overall average values can vary due to the static compression ratio, battery charge, and starter condition. I thought the values were a little low, but if you have a weak battery or a questionable starter then the values you have are acceptable.
You plan on having the motor bored don't you?
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93 Thunderbird 5.0 HO
89 Firebird L03
95 F150 XL
Get ready for the 351 boss build this summer, 4v closed chamber heads, 2.25/1.75 valves, .750 lift, 12.5:1 piistons, wieand tunnel ram, nitrous, I think its gonna roar!
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