Thread: tranny swap
View Single Post
  #10  
Old July 17th, 2013, 06:41 PM
huntaaar huntaaar is offline
Temporarily Suspended
 
Join Date: Jul 2013
Location: grand rapids
Truck: 1967 c2500
Age: 35
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
huntaaar is on a distinguished road
Default Re: tranny swap

Quote:
Originally Posted by BillT View Post
I super-tuned my '66 GMC 1000 with a 305 V-6 just before a long trip years ago and I was getting a consistent 15 1/2 MPG out of it, highway.

I would have loved to have a Factory OD with my 3-Speed back then as I would love to have one today for my '72 C-10, but I always found them very hard to find.

I checked into aftermarkets and found them to be pretty expensive.

I went the inexpensive route with my '72 and put tall tires on the rear. I've got 265/75R/15's on the rear and a matching set of 235's on the front.

It did make a notice-able difference.

Bill

What do you mean by "super tuned" 15mpg is my goal (im at ten now up from 7). tell me more about the set up you had. thanks.
Reply With Quote