what would be reason why my car is lacking power. it feels fast but not like it should.i am doing a compression test on it today. the shop that put my cam in put it in wrong they put it in instead of dot to dot on the gears they put it dot to key way. so i fixed that. and i am steal not feeling power. this is what i have. 383 with stock heads, mild cam, srp pistons,9-5-1 compression, trw rods 5.7, a complete msd ignition, hooker headers, 3 inch exhaust, 2 chamber flows,turbo 350 trans, 670 holley avenger carb,stealth intake. please help.