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nv4500 4th gear chatter

5852 Views 7 Replies 7 Participants Last post by  2ndGenCummins_Buck
hey, i just finished a nv4500 swap in my 2001 dodge 2500 i rebuilt the transmission with an updated mainshaft and all new bearings and synchros, when i shift into 4th gear it is real loud chatter till it get to about 35mph to 40mph what could cause this i dont have the correct shift boot on it so it lets in some noise but it doesnt sound right, thanks
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So what your saying is it only does it when your lugging it. 35-40 MPH you should be getting a littler higher up in the RPM range. Mine make a kind of "growling" noise if you will when I'm at low RPM's in 4th. Also I swapped in a fully splined main shaft in my trans and I had to use a gear puller to pull off the 3rd-4th synchro hub but when I went to put it on the new shaft it just slid right on. Didn't have to press it on so I'd say your fine there. Did you check your end play when you were finished??
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