davisenvy wrote:
1. The Tundra is 381 HP, but has 4.30 gears compared to my 3.73. I am also running 285 tires, not the stock 245's. What's the math there?
2. Yes I do. I have 344.5 at the rear wheels. Dynojet
3. I am not sure exacly what RPM he was running. We have made this trip dozens of times. Surely at one poing the max hp was found. How come no one is asking me what my rpm's were? Argument slanted towards gas?
So just because you wanted you boosted the HP on the Duramax by 25 and knocked 81 Hp off of the Toyota?
I know they aren't the same trucks, but the pulling experience should be somewhat close according to the original statement. They aren't.
One thing you have not taken into account, yes you are driving over a mountain, as turtle asked, not very well tho, how high is the mountain pass? 3000'? the toy is down some 3% in HP, 6000'? now he is down some 18% HP. A natural aspirated motor loses 2-3% per 1000' above sea level you are. A turbo/super charged motor generally speaking will not lose until 10K' elevation. Some as low as 8K, others as high as 15K'. Hence why turtle has the HP down on toyota.
If you were both pulling a 6% grade at less than 1000', both should pull about the same, assuming the tranny and axle gearing work for the motor at hand, best interest, ie HP and torque curves. If not, then even if BOTH have the same motor, but different axel gears, a tranny, tire diam to name three things that can effect how well a rig will function, one may be better at a hill climb than the other. I've even seen where a lower HP rig can do better than the higher hp rig! All because of the drivetrain one has vs the other.
Marty
