Quote Originally Posted by pat mccarthy
you do not have to Oring the block for 10psi fel-pros race head gaskets will hold that and the cometic mls head gaskets will hold much more yes i will not run that hot with that low cr i have run 10 psi on a 10to1 with 10psi with no oring big blocks
Again I agree with what Pat has said here.
I know of a few guys that have run 15 psi on the Cometic gaskets.
I also know some cheap drag racers who have three years on the same Cometic gaskets.
I don't know if I would do this.
Seems rather risky.