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Originally Posted by goathead455
Unfortunately my GTO engine is tired, and has an 041 cam in it, so not a good comparison. My Formula engine is a 10:1 deal with a SMALL solid flat tappet cam, and it averages 215 PSI cranking!
Lloyd,
How did you get to 10:1 on your Formula?
Did you mill the heads or do you have domed pistons?
Thanks
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Both, actually.
You'll have to forgive me, as my memory isn't the best and we built this engine over five years back, but IIRC the chambers ended up at around 105-107 cc, and we had JE make us a custom piston with a SMALL dome of approximately 10cc volume.
Actual calculated static CR is 9.98:1. 467" (455 with a 4.200" bore and stock 4.210" stroke), 430 CBHP @ 5100 and 530 CBTQ @ 2900 on 93 octane pump unleaded.
Looks (and sounds - except for the solid lifter music) like a stone stock HO under the hood, manifolds and all.