Dustin came in on Sunday (the dude is a serious workaholic), and tweeked the PCM some more... still not finalized.

Stage IV dyno graph:

Chris

Congratulations on those numbers, its a monster for sure!!
My question is the torque, it appears as though the engine is in boost even below 3500rpm!? Hope your drive and fuel wallet can sustain that kind of scenario.

Dustin is a motorhead like the rest of us, sunday is just a another day to a motorhead with a project!

Best Regards,
Ray @ Raylar

Dam, the thing was still climbing at 6100...

screw blowers just don't quit!

Awesome thread! :D

if this chart were the final dyno results what would be your target rpms?....simply the highest HP? or do you add the torque and the HP together and go for the point in the rpm curve were the result of those two factors together is the highest?...I agree...awesome thread

You typically prop for the peak of the horsepower curve, which is typically about 1200rpm to 1300rpm above the peak torque.

In this case, the valve train is the limiting factor, so rpm will be held to around 6k.

Chris

Chris, is this with the 3.3L blower, 700sci cam and 3.5" pulley?

This is with the 4.0L blower, Whipple cam, and a 4.0" pulley.
The Whipple cam is a little more agressive than the 700sci cam.

After we get this configuration ironed out, we will be bolting the 3.3L back on to test with this cam.

Chris

No, this is with a 4.0 liter, a larger cam than the 700 and, I think, a 4" pulley.
Keep it coming Chris. I was really good talking with you this evening.
Eddie

Sorry Chris, we posted at the same time.