Posted by Kaegi [76.22.23.236] on Sunday, November 08, 2015 at 00:35:17 :
In Reply to: Re: transmission swaps posted by Carl Hopkins [99.57.81.53] on Saturday, November 07, 2015 at 23:06:09 :
look for a 435 with a designation of D. such as NP435D or D2, or D3. those are the close ratio tranny better for towing. All the old Muncie, NP and borg warner truck 4 speeds do not have synchro in first. your NP 420 has no synchro in 2nd wither. use engine rpms to shift down not the clutch. I would keep the poly. way better torque band than the LA318. I have towed with both and much prefer poly
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