can an aluminum head [pocket ported eddy performer rpm] with an 11.0:1 CR be ran with 93 pump gas [with adding ?? amount of race gas or additive] in a 4000lb charger, MP590 cam, 3.91gear by backing timing down to around 18[or so] initial, 32-34 total, without detonation ?
i know this is on the ragged edge, but just asking.
how much will this affect performance ?
a head gasket change can [i think] lower the CR to around 10.5:1 or so.
other suggestions ?
TIA up
beer