| |
Click on image for the lowdown. 
====
| | |
7 members (Donf, Gdads51, 55shaker, TUTS 59, Forty9, Donsz, Gray_Ghost),
126
guests, and
1
robot. | | Key: Admin,
Global Mod,
Mod | | | Forums66 Topics128,056 Posts1,055,799 Members48,426 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Jan 2001 Posts: 687 Shop Shark | | Shop Shark Joined: Jan 2001 Posts: 687 | Originally posted by LILRED66:
I have a '66 C-10 with a factory 3.73 and a 420 Muncie 4-speed (granny low) and a factory 327 cid. I would like to change out the ring and pinion setup for enhanced highway performance. What am I looking at for a new setup that will give me 2,200-2,400 rpm at a speed of 65-70 mph?
Your input is appreciated.
LILRED66 I had the same setup but with a 3 speed, column shift transmission. I changed the 3 speed to a New Process A833 4 speed. Got a .73 overdrive and now (with 235/75R15 tires) I turn 2200 rpms at 70 and a shade over 2600 rpms at 80. 70 is easy cruising with the 292 I have as it has headers, a mild cam and 500 cfm 4 barrel carburetor. So I recommend the A833 New Process 3 speed + Overdrive transmission . | | |
|
|
| |
