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kipps · 12-04-2020, 12:08 AM

This is a bit of info I threw together to help folks make sense of the GM nv4500 transmissions. I hope you can load it without a facebook account. If you can't read it, let me know, and I'll send it directly.

https://www.facebook.com/groups/2678...07231606140004

My favorite gear ratio calculator is linked below. This calculator has three different nv4500's listed. 92-94 has different ratios. The other two are identical to each other.

http://www.grimmjeeper.com/gears.html

If you're running a LS engine in a lightweight truck that's used for highway cruising, you'll want to gear it so you're running 2000-2200 rpm at 70 mph. A SBC 350 would prefer a slightly lower rpm. A straight-six is much happier even lower yet. If you're doing any towing, drag racing, or just like spirited driving, you'll want higher rpms.

12-04-2020, 12:08 AM	#6
kipps Registered User Join Date: Jul 2014 Location: North-central Virginia Posts: 1,099	Re: Looking for old posts on installing the np 4500. This is a bit of info I threw together to help folks make sense of the GM nv4500 transmissions. I hope you can load it without a facebook account. If you can't read it, let me know, and I'll send it directly. https://www.facebook.com/groups/2678...07231606140004 My favorite gear ratio calculator is linked below. This calculator has three different nv4500's listed. 92-94 has different ratios. The other two are identical to each other. http://www.grimmjeeper.com/gears.html If you're running a LS engine in a lightweight truck that's used for highway cruising, you'll want to gear it so you're running 2000-2200 rpm at 70 mph. A SBC 350 would prefer a slightly lower rpm. A straight-six is much happier even lower yet. If you're doing any towing, drag racing, or just like spirited driving, you'll want higher rpms. __________________ 1987 C6P V20 truck, 2010 LMG 5.3, AFM delete, 2010 Camaro exhaust manifolds, 1997 nv4500, 1991 np241c, hydroboost, 2005 14bff axle & driveshaft, drop-n-lock gooseneck, 4.10 gears, stock suspension, rims, and tires. Still a work in progress. Any questions or suggestions are welcome!