[Lloyd-TX]

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

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.