The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Suspension

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 03-06-2014, 01:52 PM   #1
flashed
Registered User
 
Join Date: Oct 2009
Location: canton ga
Posts: 12,724
Rear End Gears

My 72 Chevy truck is a factory shortbed fleetside and originally was a 6 cylinder with turbo 350 transmission .When I got it ,it had been hotrodded and switched to a 350 V8 .It has been in the bodyshop for a frame off for almost 3 years now and is almost ready to come home but now has a new 350 crate motor in it .What rear gears were most likely in it from the factory and what would be the best for better gas mileage .I have not checked it to see what is currently in it ,it may the the original .
flashed is offline   Reply With Quote
Old 03-06-2014, 02:30 PM   #2
Keith Seymore
Registered User
 
Keith Seymore's Avatar
 
Join Date: May 2009
Location: Motor City
Posts: 9,226
Re: Rear End Gears

I assume C10, based on your transmission.

Could have been 3.73 (standard) with an optional 3.07 or 4.11.

Powertrain charts from the GM Heritage Center archives are attached, so that you can see for yourself.

Lower numerically is typically better for mileage...to a point.

K
Attached Images
  
__________________
Chevrolet Flint Assembly
1979-1986
GM Full Size Truck Engineering
1986 - 2019
Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926
My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524
Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/

Last edited by Keith Seymore; 03-06-2014 at 02:35 PM.
Keith Seymore is offline   Reply With Quote
Old 03-06-2014, 03:33 PM   #3
flashed
Registered User
 
Join Date: Oct 2009
Location: canton ga
Posts: 12,724
Re: Rear End Gears

Sorry ,it is a C10 ,thanks for the info .
flashed is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 05:38 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com