Horsepower guessers come in!
#1
Horsepower guessers come in!
I'd like some opinions on potential power numbers, I know there's lots of variables but an estimated guess is better than no guess.
Here's the specs for a 402:
Approx. 11.8-12.0:1 compression.
Iron 6.0 block, standard bore.
4" stroke 4340 crank.
6.125 H-beam rods.
Flat top piston, 5cc reliefs.
Dart Pro-1 225cc intake runner heads, light clean up on intake side, light clean up with full polish on exhaust side, 2.05 intake valve, 1.60 exhaust, milled to 58cc combustion chamber.
Yella-Terra adjustable shaft rockers, 1.7 ratio.
Comp solid roller, 256in./262ex. @0.050, 0.690 lift both sides on a 106 LSA.
GM single plane with light clean up and a port match, HVH 2" billet tapered spacer on top to add some plenum volume.
850HP Holley, race gas.
Full MSD ignition.
That's pretty much the core parts, using the distributor conversion cover, going in a USMTS-type dirt modified. Like I said before, just rough guesses are OK. Thanks.
Here's the specs for a 402:
Approx. 11.8-12.0:1 compression.
Iron 6.0 block, standard bore.
4" stroke 4340 crank.
6.125 H-beam rods.
Flat top piston, 5cc reliefs.
Dart Pro-1 225cc intake runner heads, light clean up on intake side, light clean up with full polish on exhaust side, 2.05 intake valve, 1.60 exhaust, milled to 58cc combustion chamber.
Yella-Terra adjustable shaft rockers, 1.7 ratio.
Comp solid roller, 256in./262ex. @0.050, 0.690 lift both sides on a 106 LSA.
GM single plane with light clean up and a port match, HVH 2" billet tapered spacer on top to add some plenum volume.
850HP Holley, race gas.
Full MSD ignition.
That's pretty much the core parts, using the distributor conversion cover, going in a USMTS-type dirt modified. Like I said before, just rough guesses are OK. Thanks.
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