Help settle an arguement!!

dustoff440 said
I have a 360 magnum I built for my Dart and I have come up with an "estimate" of the horsepower and my buddy says I am way off.

360 Magnum
stock heads, pistons, rods, block, crank
windage tray
9.1 to 1compression ratio
496/512 276/286 LSA 112 cam
1 3/4 tube headers
850 Thermoquad
Air Gap knockoff

differences between mine and 380 horse crate Magnum
10 to 1 CR
501/292 106 cam
M1 single plane

I say that between the cam difference, intake difference, and 1 point of CR I am only 30-40 horsepower behind the 380 horse......approximately 340-350 horse power

what do you say???

Tell your buddy he is off, your estimate is very close, your not going to loose that much HP from a loss of 1 point in compression (at that level). One thing i do not see working well on that mild build is the 1.3/4" headers, you will be leaving some low-end torque on the table, you should be useing 1.5/8", unless in the future you'll be building a stroker.