[Skippy597]

I know I've asked in the past and have gotten some great info. However I also just asked powell machine for a cam rec and custom grind as I am impressed by his knowledge on his YouTube videos. So here's my engine specs and the other cams I'm comparing it against. Just looking for a hot street machine and want 500hp+.

400 based
4.25 scat forged crank
6.8 scat H beam rods
Ross 4.150 20cc dish pistons
Speedmaster round ports cleaned up 72cc
KRE dual quad intake
2 X 650 AVS2
Approx 10.2:1 CR

Muncie M20

3.36 rear gear and 275/60r15 tires

Interested in your thoughts here

The cams:
Powell custom (claims it to be better torque and more responsive)
230/245 .618-.618 110+3

Comp grind (my original choice)
288/294, 236/242, .573/.594 112

Butler custom (claim it will make a little more torque but that's it)
239/247 @ 050 .623/.633 113 LSA

All lifts are with 1.65 rockers and hydraulic roller grinds

I think it's interesting that when I asked Butler for a custom cam rec they went bigger while Powell went less on the int duration. I'm not one to doubt or question him as he is far more knowledgeable than I and he stated that with my speed master heads being too small for my 460 that I don't need a bigger cam as it is in a way wasted.