I run an enduro car back about 10 years on asphalt and dirt, my motor had 010 block .030 over keith black dished pistons, arp main studs,gm steel crank,stock rods w/arp bolts,186 casting gm heads,good gm cast iron intake forgot the number though,z71 intake manifolds,and a modified q-jet. This motor ran like a raped ape 5,900 to 6,200 rpm,s for 2 seasons that equates to around 2,400 laps between 1/4 mile track up to a 1/2 mile track, and was trouble free. Hope this helps.