3.42 differential

Reply Subscribe

Thread Tools

Search this Thread

May 17, 2010 | 03:50 PM

Sick C5

Thread Starter

Racer

Joined: Sep 2008

Posts: 375

Likes: 0

From: Dallas Texas

3.42 differential

I'm going to swap my 2.73 for a 3.42. Should I go with a 1-rib or a 3-rib? What should I expect to pay?

May 17, 2010 | 09:21 PM

rodsvet

Pro

Joined: Sep 2008

Posts: 660

Likes: 16

From: Tustin California

I just got a brand new zo6 3:42 from Gene Culley @ GMParts. I got in 3 business days right to my door. It's a 3 rib for strength. Price with shipping and no tax is $1404.27. You might find used but if it's a 3:42 it's probably been beat on unless you really know who you are getting it from. Call Gene, he will treat you right!! Rod

May 18, 2010 | 04:27 AM

ajg1915

Race Director

Joined: May 2005

Posts: 15,960

Likes: 21

From: West Norriton PA

St. Jude Donor '08

3 rib case is stronger. The Z06 differential comes with shot-peened gears.

May 18, 2010 | 08:53 AM

Blitzkrieg

AKA "The CLOWN"

Joined: Feb 2010

Posts: 6,261

Likes: 13

From: Chicago South Suburbs

I'm thinking about 3.42's also, however I have an auto and 3.15's now. Do you guys think I will notice the difference?

May 18, 2010 | 09:03 AM

bumble-z

Le Mans Master

Joined: May 2007

Posts: 5,393

Likes: 17

From: Belleville Mich.

Quote:

Originally Posted by rodsvet

I agree. Put a new one in. That way you're not opening the door for problems, more $$$$ and down time. Good luck.

May 18, 2010 | 09:07 AM

bumble-z

Le Mans Master

Joined: May 2007

Posts: 5,393

Likes: 17

From: Belleville Mich.

Quote:

Originally Posted by Blitzkrieg

I'm thinking about 3.42's also, however I have an auto and 3.15's now. Do you guys think I will notice the difference?

No, it wouldn't be worth the time or money . If however you're doing your own labor, then maybe I would consider. Good luck.

May 19, 2010 | 07:50 PM

99vetteran

Melting Slicks

Joined: Oct 2009

Posts: 2,560

Likes: 485

From: Moberly, Mo

i bought a used 3.42, I broke mine. I paid $500 for a 39,000 mile diff. I also purchased a left hardened output shaft from dte as I plan to take mine to the track again. If you do buy one used, make sure it low mileage, if you can't find one then buy a new one. I had a high mileage one I took to the track and it lasted 2 passes and broke on the third. Also took out the tranny output shaft. Do it right.

May 19, 2010 | 08:14 PM

Chuck01

Burning Brakes

Joined: Aug 2004

Posts: 783

Likes: 0

From: Phoenix Arizona

Quote:

Originally Posted by Blitzkrieg

I'm thinking about 3.42's also, however I have an auto and 3.15's now. Do you guys think I will notice the difference?

I think you will and if you do a TC at same time you will be very happy.

Corvette Stories

The Best of Corvette for Corvette Enthusiasts

10 Ugly Corvettes That We Still Kinda Love

Joe Kucinski

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

May 19, 2010 | 08:54 PM

paint it black vette

Melting Slicks

Joined: Aug 2006

Posts: 2,205

Likes: 2

From: port monmouth nj

Quote:

Originally Posted by Blitzkrieg

I'm thinking about 3.42's also, however I have an auto and 3.15's now. Do you guys think I will notice the difference?

yes. but youll notice it more with 3.73 and a stall. gas mileage goes down but the grin gets bigger and who bought a vette to go slow and worry about gas?"