Thread: Changing from 3 speed to a 5 or 6 speed
View Single Post
  #19  
Old November 30th, 2015, 06:54 PM
patrickk1 patrickk1 is offline
-= Dues Paid =-
  
Join Date: Feb 2015
Location: Billerica, Ma
Truck: 1963 GMC 1/2 ton
Age: 41
Posts: 12
Rep Power: 60
patrickk1 is on a distinguished road
Default Re: Changing from 3 speed to a 5 or 6 speed
Quote:
Originally Posted by TJ's GMC View Post
Considering an NV4500 for my 64 1500 as well. Subscribing to this thread for updates. Mine has the Sm420 4 speed and 4.10 rear gearing. Wonderful up to 55 mph so a 5th gear would be really nice. Only problem I have with the NV4500 is the use of a hydraulic clutch. Mechanical is much easier imop. I was also considering a gear vendors OD just cause they are fun. lol
I think the GM NV4500 may have been also used with a mechanical clutch but I think you would then need a factory GMC V6 Automatic trans adapter (hard to find) to use with the GM NV.
Last edited by patrickk1; November 30th, 2015 at 07:13 PM.
Reply With Quote