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 > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 03-26-2010, 03:21 PM   #1
mexgrhd68
Registered User
 
mexgrhd68's Avatar
 
Join Date: Apr 2007
Location: Visalia, CA.
Posts: 327
Gears.........

id like to know if rear end gears from a 76 chevy 1/2 ton fit my 72 chevy 1/2 ton, just wanna use gears because the rear end i have was originally from a 3 speed and im tired of seeing cars zooming by me when my speedometer is reading 65-70!!!!
__________________
68 c-10 1/2 ton swb fleetside, 79 GMC Sierra Grande 1/2 ton swb fleetside, 99 Dodge Durango 4x4(wifes ride),53 and 55 chevy trucks(dads trucks )
54 caddy 62 series 4 door(younger sons ride, aka 54caddy )
70 caddy 2 door, 89 chevy silverado stepside(older sons rides )
mexgrhd68 is offline   Reply With Quote
Old 03-26-2010, 03:52 PM   #2
StingRay
Senior Member
 
StingRay's Avatar
 
Join Date: Mar 2000
Location: Saskatoon,SK,Canada
Posts: 2,476
Re: Gears.........

If they are both 12 bolts then yes they should. It's a bit of work and some special tools to set them up though. You need to be a pretty advanced DIY mechanic to take something like this on.
__________________
Saskatoon, Saskatchewan
Canada
StingRay is offline   Reply With Quote
Old 03-26-2010, 04:43 PM   #3
cdowns
Senior Member
 
cdowns's Avatar
 
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
Re: Gears.........

a factory service manual would help you do the job it lists the tools and procedure needed
__________________
71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane

MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF

DONT BELIEVE EVERYTHING YOU THINK

TAKE MY ADVISE;I DON'T USE IT ANYWAY
cdowns is offline   Reply With Quote
Old 03-26-2010, 06:24 PM   #4
LONGHAIR
just can't cover up my redneck
 
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
Re: Gears.........

What does your speedometer reading have to do with this? Is the truck revving really high at this point? or is your speedometer just "off"?

As far as changing gears, it is not worth the hassle. It takes a LOT more experience/expertise to set-up "used" gears. It's not a job for a first timer. It is far easier/more cost effective to swap the entire axle housing from another truck with the gear ratio you need.
__________________
You can review the site's rules here.



Quote:
Originally Posted by Longhorn Man View Post
As for reading directions...
The directions are nothing but another man's opinion.
Learn from the mistakes of others, you won't live long enough to make them all yourself...

Bad planning on your part does not necessarily constitute an instant emergency on my part....

The great thing about being a pessimist is that you are either pleasantly surprised or right.
LONGHAIR is offline   Reply With Quote
Old 03-26-2010, 06:54 PM   #5
capev86
Registered User
 
Join Date: May 2009
Location: Eliot, Maine
Posts: 1,314
Re: Gears.........

the reason you are getting passed at 65-70mph is 'cause all those other drivers are going too darn fast.....be an adult and let them go. saving a couple minutes is not worth wasting the gas and the increased chance of a bad accident. for best fuel economy, you need to keep the speed at 60 or below. trucks have a large frontal area and have to push a lot of air out of the way at highway speeds. the speed to energy requirements is an exponential relationship, not a linear one. i like the feel of a v8 under the hood of my truck (even that 406sbc that will be going in my 72 burb) but i never feel like i'm in a rush when i'm driving a rig. do the world a favor and relax your right foot when driving....it will help combat the problem that trucks are blamed for (pollution and fuel consumption).
capev86 is offline   Reply With Quote
Old 03-26-2010, 10:40 PM   #6
DT1
Registered User
 
DT1's Avatar
 
Join Date: Oct 2009
Location: Gardnerville Nv No Mo Cali!!
Posts: 869
Re: Gears.........

Quote:
Originally Posted by LONGHAIR View Post
What does your speedometer reading have to do with this? Is the truck revving really high at this point? or is your speedometer just "off"?

As far as changing gears, it is not worth the hassle. It takes a LOT more experience/expertise to set-up "used" gears. It's not a job for a first timer. It is far easier/more cost effective to swap the entire axle housing from another truck with the gear ratio you need.
30 years ago I was told by a mechanic that specialized in rear ends that it was almost impossible to set up used gears. I poo pood it and got to studying on the subject. I did the lead paint and newspaper. I shimmed. I did everything by the book. When I finished, the differential was perfect. Boy did I tell him! A week later it started to hum. A couple of days later, it was howling. You can probably guess where this one is going...
DT1 is offline   Reply With Quote
Old 03-26-2010, 11:31 PM   #7
gonzo6869
Cops, ha, catch me if you can!
 
gonzo6869's Avatar
 
Join Date: Jun 2009
Location: Santa Barbara, CA.
Posts: 271
Re: Gears.........

I guessing you have the 3.73 rear end, I do. I was thinking of swapping gears, or the entire axle, but after some thinking, I believe my money and time will be better spent on an OD tranny, such as a 200 or 700R4. A 200R4 will put you back about 1200+ and is almost a bolt in swap. You might want to consider this before changing your rear end.
__________________
72 C-10 Stepper
350/TH350
3.73 in the back
Edelbrock intake and Carb
Hooker Comp Headers
275/60R15 on Rallies


Last edited by gonzo6869; 03-26-2010 at 11:32 PM.
gonzo6869 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 05:58 PM.


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