Re: 57-68 WM300 NP420

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Posted by Vaughn [] on Saturday, March 27, 2021 at 23:07:51 :

In Reply to: Re: 57-68 WM300 NP420 posted by Keith in Washington [] on Saturday, March 27, 2021 at 20:16:52 :

Then you actually have an NP420 according to what others have provided along with VPW's catalog.

Your bell housing# 9211982

FFPW - 47 to early 56 (serial# 83949001) bell housing# 921197, after serial# 83949001 1666520

WC 3/4/1.5 bell housing# 921197

M37 51-54 bell housing# 1269428

M601 bell housing# 1786131

The housing that Dave sent is actually an NP420 housing that is why everything from your other transmission worked. The PTO 12533 that Dave sent is for an NP420 transmission. Your bell housing is not a FFPW or Military housing and is probably from a B series or other Dodge truck that used the NP420. So you don't have NP420 mounted to the 921197 bell housing.

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