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 11-12-2020, 09:57 AM   #1
ubtripn
Registered User
 
ubtripn's Avatar
 
Join Date: Apr 2010
Location: Boise, ID
Posts: 1,280
Will 1999 rearend fit on my 68

Sorry, I didn't have time to research, it is being given away free. My current rear-end is geared too high, all the power is on the top end. This posi track is 737 ratio off an suv, thx
ubtripn is offline   Reply With Quote
Old 11-12-2020, 11:18 AM   #2
SCOTI
Registered User
 
SCOTI's Avatar
 
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 22,064
Re: Will 1999 rearend fit on my 68

it's probably over 3" wider minimum. 71-87 length housings increased by 1.5". 88-98 (GMT400) housings increased again by 1.5". Seems I recall the track width increased for the next generation GMT800's as well.

That being said, anything can be modified to 'fit'. It just depends on what the application is.
__________________
67SWB-B.B.RetroRod
64SWB-Recycle
89CCDually-Driver/Tow Truck
99CCSWB Driver
All Fleetsides
@rattlecankustoms in IG

Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive.
It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar.....

Cubic inches is like Indiana Jones with a cheap pistol.
SCOTI is offline   Reply With Quote
Old 11-12-2020, 11:21 AM   #3
ubtripn
Registered User
 
ubtripn's Avatar
 
Join Date: Apr 2010
Location: Boise, ID
Posts: 1,280
Re: Will 1999 rearend fit on my 68

Copy that, thanks a ton!
ubtripn is offline   Reply With Quote
Old 11-12-2020, 11:41 AM   #4
geezer#99
Registered User
 
geezer#99's Avatar
 
Join Date: Aug 2009
Location: Bowser
Posts: 13,731
Re: Will 1999 rearend fit on my 68

You wrote ‘suv’.
Which one?
Some are narrower than stock 68.
geezer#99 is offline   Reply With Quote
Old 11-12-2020, 12:58 PM   #5
57taskforce
All about them K’s
 
57taskforce's Avatar
 
Join Date: Jun 2014
Location: Land of Entrapment
Posts: 6,487
Re: Will 1999 rearend fit on my 68

If it’s free why are you asking?? What’s the harm in picking it up and seeing if you want to go thru with it. Width aside you’ll have to strip the perches and shock mounts off the axle and the re weld new perches and shock mounts once you get the pinion angle set. It’s not very hard.
__________________
Tyler
'57 3100 http://67-72chevytrucks.com/vboard/s...d.php?t=813888
'72 K20 Cheyenne: 5” lift, 35’s, front dana 60 blah blah blah… http://67-72chevytrucks.com/vboard/s...d.php?t=662879
‘69 K10 SWB: 4” lift 33”s… in a million pieces http://67-72chevytrucks.com/vboard/s...d.php?t=805206
'98 Silverado LT K2500HD ECLB Vortec 454/4l80E: 6" lift 35x12.5x20’s
57taskforce is offline   Reply With Quote
Old 11-13-2020, 12:15 AM   #6
RustyPile
Registered User
 
RustyPile's Avatar
 
Join Date: Dec 2017
Location: Elkhart, Texas
Posts: 1,841
Re: Will 1999 rearend fit on my 68

Quote:
Originally Posted by ubtripn View Post
Sorry, I didn't have time to research, it is being given away free. My current rear-end is geared too high, all the power is on the top end. This posi track is 737 ratio off an suv, thx
I think you misquoted the ratio.. 7.37 is an EXTREMELY LOW ration.. I have never seen a ratio that low except in a race car.. More than likely the ratio is in the 3.08 to 3.42 area.. Quite possibly higher than the one in your truck now... 4X4 SUVs tend to have lower rear ratios, typically in the 3.72 to 4.10 range....

If you're not sure of the SUV ratio, remove the cover and take a picture of the numbers stamped on the edge of the ring gear.. We'll be glad to tell you what's the actual ratio...
RustyPile 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 11:37 AM.


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