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That's what I'm hoping for. That with 435 being mated to the 21 I can change it out without too many problems. I guess I'll have to wait until I actually have everything in my hands where I can see what fits and what doesn't. I do appreciate your help and willingness to discuss the possible problem ...

This is true, it is a 28 spline but most 4-wheel drive 435's output shaft is too long. That is why most people use a two wheel drive 435 when putting a 20 behind it. Like in the outline in your other post. He used a two wheel drive transmission from a F100. All you have to do on a two wheel drive is ...

Thank you. Yeah I've put 20's behind 435's and T-18's that came from 2 wheel drive trucks. I used the 3 speed adaptor and re-machined the pilot for the transmission bearing. What I have is a 435 dana 21 from a 76 F100 that I'm wanting to use. What I'm trying to find out is if I can use a 20 adaptor ...

Hello folks. My name is Anthony Terry. I'm with Stone Crusher Steering. I've built quit a few Broncos from Full size to Early to Bronco II's and am in the process of building a Bronco II to hopefully compete in some rock crawling competitions. The drive train I'm going to be running is a 3.8 ...