Join Date: Apr 2002
Location: Gosford NSW Australia
Re: Cleveland heads - what are these ones?
As 4Vman says, they look like closed chamber heads and will give higher compression causing pinging even on 98 PULP. Even more so if they have been shaved.
I would be getting them cc'd to determine compression ratio before they got anywhere near the top of my motor.
IMO you would be better getting you open chamber heads reco'd with hardened seats so you don't have to worry about lead additive.
The cop said "Do you know why I pulled you over". I said " Well, that all depends on how long you have been following me!"