C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Rear end gear

Thread Tools
 
Search this Thread
 
Old Dec 1, 2007 | 07:05 AM
  #1  
gbags's Avatar
gbags
Thread Starter
Instructor
 
Joined: May 2007
Posts: 208
Likes: 0
From: Houma La
Default Rear end gear

78 stock L-48 WHAT REAR END GEAR?
Reply
Old Dec 1, 2007 | 08:40 AM
  #2  
Glass Act's Avatar
Glass Act
Melting Slicks
 
Joined: Jul 2005
Posts: 2,545
Likes: 3
From: 406ci SB, AFR 180 Heads - 490 HP @5,600 RPM 529 lb-ft @ 4,100 RPM
Default

Standard transmission 3.36.1 or 3.70.1
Auto transmission 3.08.1 or 3.55.1
depends on options the car came with new.
Reply
Old Dec 1, 2007 | 10:11 AM
  #3  
sly vette's Avatar
sly vette
Safety Car
 
Joined: Oct 2005
Posts: 3,570
Likes: 1
From: Algonac Michigan
Default

Originally Posted by gbags
78 stock L-48 WHAT REAR END GEAR?

If it's like most I have seen it will be a 3.08
Check it by marking the rear tire and the driveshaft and count the revolutions each one makes!

Last edited by sly vette; Dec 1, 2007 at 10:13 AM.
Reply
Old Dec 1, 2007 | 11:57 AM
  #4  
dmayhew's Avatar
dmayhew
Drifting
 
Joined: Oct 2007
Posts: 1,254
Likes: 5
From: Brown Summit North Carolina
Default only 1 way to know for sure

Since the ratio could have been changed then the only way to know for sure is to check it out at the rear end.

Too much trouble to remove cover and count teeth unless you want to service the fluid whlie at it.

You could jack up the car and have a buddyturn the rear wheel 1 full turn. You will be under car and mark a spot on drive shaft and count the turns it will be close enought to tell if it turns are...

just over 3 times 3:o8, or 3.5 times 3:55 or 3.75 times 3:70

If speedo and tach are working the use that.

3:55 on P225/70 tires will give ~2650 rpm

David
Reply

Get notified of new replies

To Rear end gear





All times are GMT -4. The time now is 07:36 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE