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General Site Info => General Discussion => Topic started by: Jmoney01 on May 19, 2018, 07:42:38 pm

Title: NV 4500 m20 swap
Post by: Jmoney01 on May 19, 2018, 07:42:38 pm

I have a 1980 gmc c35 with a 292. Mated to a m20.  I was looking at swapping a nv4500 for the m20 to obtain an overdrive. This is a little dump truck and I need the pto off the side.  My understanding is the nv4500 has this capability. What else do I need for a successful swap?

Title: Re: NV 4500 m20 swap
Post by: Rapid Roy on May 19, 2018, 08:10:15 pm

Welcome

Title: Re: NV 4500 m20 swap
Post by: 1967KaiserM715 on May 20, 2018, 07:49:24 pm

M20 was a side shift, I didn't think it was an option in 1980, plus I don't think it was able to drive a PTO. What you likely have is the SM465. This had dual pto covers top shift, and cast iron case.

The 2nd nv4500 is about 8+ inches(I think) longer then the standard 2wd sm465. The bellhousing will not correctly bolt up, you would likely need to get the Advance Adapter bellhousing. 80 should still be mechanical clutch. You could convert to hydraulic clutch ND use the nv4500 bellhousing and hydraulic slave.

That's pretty much the basics.

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