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 02-05-2004, 03:00 PM   #1
roadking
Registered User
 
Join Date: Nov 2003
Location: kc
Posts: 229
rearend I.D. for speedometer correction

rearend has GM 69 stamped on it, tires are p275/60/15 with th350 tranny. any help would be appreciated. thanks.
roadking is offline   Reply With Quote
Old 02-05-2004, 03:08 PM   #2
cwilli84
1FINE69
 
cwilli84's Avatar
 
Join Date: Aug 2003
Location: Detroit, Michigan
Posts: 239
Go to tci transmissions website they have calculators for the proper gears and really good prices from what I can tell.
__________________
Had a 69 swb fleetside 350zz3 w 400turbo trans oak lined bed with rhino coated sides red exterior. SOLD
cwilli84 is offline   Reply With Quote
Old 02-05-2004, 03:09 PM   #3
lukecp
Formerly yellow72custom
 
lukecp's Avatar
 
Join Date: May 2001
Location: Austin, TX
Posts: 7,531
If you are asking what the ratio is, proably the best way would be to pop your rearend cover, and stamed on the ring gear is the ratio. 41-10 is 4.10, 41-11 is 3.73, and 43-14 is 3.07.

I reccomend this because your rearend fluid poralby hasn't been changed in many years. And it is a simple job, besides the awful smell of gear oil.
__________________
'72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride.
'70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck.
'97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg
lukecp is offline   Reply With Quote
Old 02-05-2004, 04:01 PM   #4
roadking
Registered User
 
Join Date: Nov 2003
Location: kc
Posts: 229
yes im looking for the gear ratio on the rearend, whats the common stock ratio for a 71 swb. thanks
roadking is offline   Reply With Quote
Old 02-05-2004, 04:09 PM   #5
nightmare
Senior Member
 
nightmare's Avatar
 
Join Date: May 2002
Location: Hammond, WI
Posts: 1,816
depends on the engine and transmission. what engine do you have?
__________________
Mike

2001 Dakota R/T - Silver CC - 1 of 1671 •360 w/46RE •392 limited slip
1972 Chevy Suburban - Turquoise/Black
1969 Chevy C/10 - Blue LWB •350 w/ 700R4 •3.73 posi •PS PB A/C - SOLD

Using your turn signal is not "giving information to the enemy"

67-72 FAQ

Quote:
Originally Posted by GMCMAX View Post
My lugnuts require more torque than your honda makes!
nightmare is offline   Reply With Quote
Old 02-05-2004, 04:15 PM   #6
roadking
Registered User
 
Join Date: Nov 2003
Location: kc
Posts: 229
originally had 6cyl. 250 / powerglide, just installed 350 crate/ th350 in v8 position.
__________________
71 C10 SWB
BLACK AND WHITE
350 CRATE TH350
ENJOY LIFE
roadking is offline   Reply With Quote
Old 02-05-2004, 04:20 PM   #7
lukecp
Formerly yellow72custom
 
lukecp's Avatar
 
Join Date: May 2001
Location: Austin, TX
Posts: 7,531
It would almost certinally be 3.73 then. Was standard in 6-cylinder trucks. Unless it says different on the glovebox option sheet, or the rearend has been swapped out sometime in the past.
__________________
'72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride.
'70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck.
'97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg
lukecp is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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 04:02 AM.


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