Forum Discussion
Hannibal
Mar 30, 2014Explorer
rexlion wrote:Hannibal wrote:tgreening wrote:
So. Have we figured out whose Tallywhacker is bigger yet?
Mine.:B
I made the comparison almost ten years ago with my '03 250hp/460tq SO Cummins Ram to a duplicate '05 345hp/365tq Hemi powered 2500HD towing the same 5th wheel over the same routes around the southeast including Monteagle Pass. The Hemi towed faster up the grades although at 30%~ higher rpm and about 30% higher fuel consumption. 100 more hp beats 100ft/lbs more torque every time on paper and on the road. HP is the rate at which work is done. You can't get around that fact.
That tells me a lot. Your Hemi had a 25% torque deficit, yet did better on uphills. In my situation the hemi has only about a 8% torque deficit. I'm sticking with gas.
The thing that gets overlooked is, they all use gear reduction. Even with less torque, within reason, with more hp you can use more gear reduction to make more torque at the rear axle than the higher flywheel torque engine. High altitudes? Yep, that means less HP and equates to less torque. But work over time is measured as HP.
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