Thread: Just dynoed my 396 BBC...how to get more HP?

Tweet

Oh and I put chevron 91 octane in it. And just for the hell of it I threw 5 gallons of 100 octane VPRacing StreetBlaze to 1/2 of a tank of gas.

i would run an 850 carb cam somewhere in the .550 lift range bit more duration

Dyno's don't always tell the true story,great great tools for tuning but nothing more.10 different dyno's will give 10 different results. Engine builder dyno's always show big numbers. Theres a guy here in St.Louis that calls his dyno the Humbler, he swears he gets more realistic numbers than anybody and delights in putting so called big name,big buck,big horse
motors on it

I knew dyno's were off but I didn't realize they would be off by that much...I guess the track is the only way to really tell how much hp you have. Does anybody know what 160PSI cranking compression would be? I'm thinking maybe my compression is a little low for the camshaft...maybe I could try a wider LSA like a 112 and more duration and lift on the exhaust