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I know that hp at the wheels is typically 20-25% lower than at the crank due to driveline losses... What about torque? Does the drive line also consume 20-25% of the torque?




There is no possible way that there is a 20-25% loss. I would say closer to 10% and 15% on the extreame high side. I had my Turbo Buick on the rollers(dynojet) a few weeks ago and made 840 HP @ 26# boost and ran out of fuel pump. Going back tomorrow and hoping for 1000HP. At this level, If you assumed 20% then something would be melting off the car assuming the loss would be due to friction.

Allan G.

I pretty much agree with this. With a torque converter the numbers can be a mess,but a manual trans is more accurate. I use 18% loss for my best guess,your % lost may be less. We have a Dakota,with an automatic,similar cam specs,4bbl carb,junkyard 360 magnum,etc,makes 315 at the tire,runs 12.20's 107mph @3550lbs. It's dead above 5200rpm as well. I can fix it but my buddy isn't ready for that yet.