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**Pvmt-Pndr** · 02-15-2019, 03:47 PM

I found a gear calculator and was messing around with it. According to it and assuming I have a 6:40:1 rear high gear puts me at a top speed of 59 mph at 3200 rpm... seems about right.

A lot of gear vendor options/nv4500 or a era correct Eaton OD transmission are right around a .80 final drive. According to the gear calculator that would make my new top speed 72 mph at 3200 rpm. They all seem like good options to get me what I want. The OD factory Eaton from negative been reading is like a unicorn so that's not much of an option.

02-15-2019, 03:47 PM	#7
Pvmt-Pndr Registered User Join Date: Jun 2017 Location: Temperance Michigan Posts: 375	Re: 69 c50 I found a gear calculator and was messing around with it. According to it and assuming I have a 6:40:1 rear high gear puts me at a top speed of 59 mph at 3200 rpm... seems about right. A lot of gear vendor options/nv4500 or a era correct Eaton OD transmission are right around a .80 final drive. According to the gear calculator that would make my new top speed 72 mph at 3200 rpm. They all seem like good options to get me what I want. The OD factory Eaton from negative been reading is like a unicorn so that's not much of an option.