Frustrated

Ok guys here is my set up, 318 .040 over kb167 flat tops, mildly ported 302 heads also milled about .025, intake is a wieand stealth with a holley 670 street avenger,msd ignition spark box distributor etc.. Cam is a mopar purple shaft .508 lift 292 dur. 108 CL. I have hooker competition headers 3in mandrel bent exhaust dumped at the axle, 727TF 3200 stall converter, 8 1/4 rear end 2.94SG. I also have a 3in inboard spring set up with s/s springs, adjustable pinion snubber. Rear tires are about 26in tall with all this being said. The damn thing wont even bust the tires loose!:angry7: Any ideas on what I should do!!!!