[Dark_5.0]

Your mph tells the story a 10.5 to 1 351 with decent heads and cam should be going about 5-7mph faster than you are.

Ive been there man I had my stock heads ported,polished.milled, bowls blended valve springs etc... and I was running high 13's. I went to a bigger cam and got lower gears and ran about the same. I finaly got some decent heads and picked up 5-6 mph and now run in the 12's in this crappy altitude.