Ring and Pinion Question
Thread Starter
Safety Car
Joined: Jan 2001
Posts: 3,569
Likes: 1
From: Hawaii
Ring and Pinion Question
What is the difference in the different rear ring and pinion between a 10 bolt, 12 bolt, and our wonderful corvette rearends? I was at the auto parts store the other day and saw a 3.73 ring and pinion or for $175. I don't remember if it was for a 10 or 12 bolt rearend but that seems cheaper than what I have seen in the Zips or MidAmerica catalogues. The link to the Zips is: http://store.yahoo.com/zipproducts/s...--pinions.html Why are the corvette ones so much more expensive?
Race Director
Joined: Nov 2000
Posts: 16,416
Likes: 1
From: NC,USA
Re: Ring and Pinion Question (Maurice)
I opened your thread expecting Rack and pinion steering questions... i found differential questions... sorry i cant help with either... put i can send this to the top again
Safety Car
Joined: Aug 2000
Posts: 3,711
Likes: 43
From: San Antonio TX
Re: Ring and Pinion Question (Maurice)
There is no similarity between any 10/12-bolt and the 'Vette 63-79 differential. Also, there are many variations of the 10-bolt and at least two on the 12-bolt (car or truck) so you just can't go out and buy a 3.73 for a 10-bolt and expect it to work unless you like to chance the odds. And there is no 3.73 'Vette gearset. It's a 3.70:1 ratio for the IRS rear. Finally, you can buy cheaper Corvette gears through Jeg's or Summit.
Melting Slicks
Joined: Feb 2000
Posts: 3,050
Likes: 9
From: Fairport NY
Re: Ring and Pinion Question (Maurice)
Maurice, Get the part number from ZIP or Mid America and call SummitRacing or JEGS, I'm sure they can give you better pricing than the corvette speciality catalogs.
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
Re: Ring and Pinion Question (Maurice)
The other thing to look at is the economics of it. There are more 10 and 12 bolt rears than Corvette rears. They sell more 10 and 12 bolt gears so they are cheaper. The Corvette 10 bolt rear uses a different size ring gear than the other two. As for making them I would suspect they are probably made the same just a supply and demand for the gears. Toms does make 12 bolt for the Vette but it is expensive and requires some mods to the case. It uses the 12 bolt carrier but it fits the Vette case
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Safety Car
Joined: Jan 2001
Posts: 3,569
Likes: 1
From: Hawaii
Re: Ring and Pinion Question (gerry72)
Finally, you can buy cheaper Corvette gears through Jeg's or Summit.
The Corvette 10 bolt rear uses a different size ring gear than the other two