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**regan wilson** · 06-21-2021, 07:53 AM

It looks like I was wrong about the gears. I used a gear calculator and plugged in all the info. If I used a 9R-22.5 tire that is 38' tall with a 4.86 gear it would work. That is with an NV 5600 6 speed OD ratio is .73. It is almost dead on with my Dodge Dually. The calculator reads 79.6mph @ 2500rpm. Now the big question is where in the world would I find a drop in replacement for my rear?

06-21-2021, 07:53 AM	#12
regan wilson Senior Member Join Date: Mar 2008 Location: tyler texas Posts: 1,532	Re: C-50 2 speed gears It looks like I was wrong about the gears. I used a gear calculator and plugged in all the info. If I used a 9R-22.5 tire that is 38' tall with a 4.86 gear it would work. That is with an NV 5600 6 speed OD ratio is .73. It is almost dead on with my Dodge Dually. The calculator reads 79.6mph @ 2500rpm. Now the big question is where in the world would I find a drop in replacement for my rear? __________________ NHRA Super Street 469C It only runs 10.90 at 156 mph