What would be the most compression a guy could run on E85 with out haveing to make compromises like retarding the timing? this would be a 4000 pound street car with 3.54 or 3.73 gears with a Passon 20% overdrive gear in the 4 speed. Specs on the motor:

484 Hemi 4.310 bore x 4.15 stroke
ported iron heads
hydraulic roller cam 226/230 at 542 lift 112 lobe centers
Inline street Hemi intake with AFBs
exhaust manifolds and 2.5" exhaust

Thanks, Joel