Transmission options for my 86' GMC? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Heavy_Steel · 12-08-2002, 10:27 AM

Hey C10N.UT, I found out some more info on those NV4500's. The early ones made by Chevy will bolt directly on to our trucks, but these are hard to find and the prices are driven up by 4x4 jeep guys with chevy engines who want them.

Chevy later switched to the Dodge configuration so all newer NV4500's won't bolt up without modifications. I'm not sure what year the change happened, but I believe it was late 80's.

There is a company called Advanced Adapters that makes a bolt on conversion to allow the current NV4500's to mount directly to our vehicles.

Also, you say you don't want an overdrive, but the SM465 final gear is 1:1, not an underdrive. If you want a higher gear, then you WANT overdrive (the NV4500 extra gear gives you .73).

Hope that helps. I'm also looking into an overdrive to keep the RPMs down on the freeway.

12-08-2002, 10:27 AM	#7
Heavy_Steel Registered User Join Date: Dec 2002 Location: North Carolina Posts: 8	Hey C10N.UT, I found out some more info on those NV4500's. The early ones made by Chevy will bolt directly on to our trucks, but these are hard to find and the prices are driven up by 4x4 jeep guys with chevy engines who want them. Chevy later switched to the Dodge configuration so all newer NV4500's won't bolt up without modifications. I'm not sure what year the change happened, but I believe it was late 80's. There is a company called Advanced Adapters that makes a bolt on conversion to allow the current NV4500's to mount directly to our vehicles. Also, you say you don't want an overdrive, but the SM465 final gear is 1:1, not an underdrive. If you want a higher gear, then you WANT overdrive (the NV4500 extra gear gives you .73). Hope that helps. I'm also looking into an overdrive to keep the RPMs down on the freeway.



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