Can a 400BBM w/cheap aluminum heads compete/dominate against the street LS?

LO23M8B said
Ya I don't know. I just use 110 out of the can. The way I figure it's good insurance and if I do have to put some pump gas in it I don't have to worry. It's just not that big a deal for the amount of street miles driven. Pump premium is like $3.20 a gal. and 110 is about 65 - $70 for 5 so if you run it 50/50 it comes out to approx. $8.50 a gal. Not to bad for a tank of race fuel. The first tank full is the killer after that it's not to bad.
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Sir,
remember AVgas has paraffin, which creates carbon deposits in the chamber and onto the piston heads.
RRR says revving up the engine hot burns that up. I bet water injection would help too.

I believe enough carbon buildup would add heat, perhaps uneven heat in the chamber-potentially creating opportunities for detonation.