Convert TH400 to manual transmission

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Yamaben

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I have a 1989 k3500. It is 4x4 7.4L with TH400 mated to the transfer case. Will the NV4500 bolt to my transfer case? Will I need a different transfer case also?

Has anyone one made a thread about swapping out TH400 for a manual?
 

Nad_Yvalhosert

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You're in luck. That is if you get one from a GM truck, you can retain to OE t-case. The 4500 was available in Dodge trucks, so choose carefully.

I did that very thing, in reverse, to my 1500. The t-case will bolt to the tranny and operate due to both manual trans, and 400, having 31 spline shafts. And if you get an 88-98 vintage truck, you'll have a donor for the brake pedal, clutch pedal, and bracket, brake master cyl, and wiring harness. (Unless you don't like reverse lights to come on when youre in reverse)
 
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