The Ford Barn - View Single Post - Help Climbing Hills

Purdy Swoft · 03-17-2014, 09:49 PM

A higher compression head will help but with a 36% overdrive it probably won't completely solve the problem.The engine doesn't produce much power at low rpm. The higher final gear that the overdrive gives doesn't let the engine turn enough rpm to produce the torque that is needed for hill climbing.There is a trade off with overdrives and higher gear ratios. The higher the final gear ratio the less the hill climbing ability and low speed power.

03-17-2014, 09:49 PM	#12
Purdy Swoft Senior Member Join Date: May 2010 Location: Alabama Posts: 8,099	Re: Help Climbing Hills - new head? A higher compression head will help but with a 36% overdrive it probably won't completely solve the problem.The engine doesn't produce much power at low rpm. The higher final gear that the overdrive gives doesn't let the engine turn enough rpm to produce the torque that is needed for hill climbing.There is a trade off with overdrives and higher gear ratios. The higher the final gear ratio the less the hill climbing ability and low speed power.