Well its a 350, 40 over, maybe 2000 miles on it, lunati 500 515 lift cam, 256 270 duration at 50, 1 94 15 camel hump heads, been worked a little, weiand team g single plane intake, edlebrock 750 carb, roller timing chain. the cam is solid, the distributor has accel cap, rotor, summit 50,000 volt coil, curve kit is in but only put in new weights and bushings and silver springs which are closest to stock. ran it today and times were miserable at 14.5s. great off line but dog at mid to top, cam is for top end and so is intake, i have tried retarding it and advancing it tonight and still cant figure it out. Could my vacuum advance be messed up, should i try to change back to stock weights and stuff? if vaccum advance is messed up how do i change that besides the obvious of buying msd and would that even solve anything? any help is appreciated. thanks