View Single Post
Old 04-26-2020, 12:44 PM   #41
UPNADM
Registered User
 
UPNADM's Avatar
 
Join Date: Jan 2012
Location: Lindsay, Ontario Canada
Posts: 649
Re: 1989 GMC 6000 Pickup/Toy Conversion

Quote:
Originally Posted by Bigdually View Post
One thing I discovered nearly immediately was that with a rear end ratio of 6.17, it was really humming at 45-50. I knew a gear swap was in order and I began the search. I ended up settling on a remanufactured differential geared at 4.63. Cruising at 70 MPH is now possible and the truck is altogether more fun to drive, though a gear between 3rd and 4th would be nice. The SM465 is pretty wide in ratio.
Where did you get that rear? I would love to get rid of the 6:17's in my yellow truck...
UPNADM is offline   Reply With Quote