Rear widths.. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Super73 · 04-20-2008, 03:42 AM

Can anyone tell me the width of the 5 lug rears (I think late 70-73)? Thanks in advance.

djracer · 04-21-2008, 08:33 AM

I think they are wider than your stocker!

wild one · 04-21-2008, 11:11 AM

Stock width for a 1966 is 62" from drum to drum (point where the wheels mount).
The width for a 1971/1972 is 63.5" from drum to drum. The 1973 up rear ends are wider still.

djracer · 04-21-2008, 04:16 PM

Quote:

Originally Posted by wild one

Stock width for a 1966 is 62" from drum to drum (point where the wheels mount).
The width for a 1971/1972 is 63.5" from drum to drum. The 1973 up rear ends are wider still.

Great info thanks!

The later model disc brake explorer 31 spine 8.8's are 60.25 wide. Thats a pretty decent rear for the money.

Super73 · 04-21-2008, 08:22 PM

So rear track width would narrow up 1" on each side with a 61.5" rear.. I have a later 71+ 5-lug rear.

68c10owner · 05-04-2008, 06:25 AM

Quote:

Originally Posted by wild one

Stock width for a 1966 is 62" from drum to drum (point where the wheels mount).
The width for a 1971/1972 is 63.5" from drum to drum. The 1973 up rear ends are wider still.

I thought the 73 up were the same width as the late 70-72 style?

Quote:

Originally Posted by Super73

So rear track width would narrow up 1" on each side with a 61.5" rear.. I have a later 71+ 5-lug rear.

What rearend are you using now?

Super73 · 05-04-2008, 08:03 PM

By my calculations (should have measured when the wheels were off) it's 63.5" wide. My tires messure out to almost exactly 12" I have a 12" draglite with a 7.5" BS. So total width tire edge to tire edge is 74.5" - 11" for the total BS and I get 63.5".

I am looking for a 9" right now that is 61.5" - 63.5" to replace the 12 bolt with. Any suggestions would be great.

djracer · 05-04-2008, 10:00 PM

the exporer rear would be just a little narrow at 60.25 with 31 spline axles. just put a spool in it and it sould be pretty good for cheap.

Super73 · 05-05-2008, 04:20 AM

Any idea on the gear ratio? I'm just not to sure about going that narrow. Did you gt the one in your uncls truck. What wheels are on it. Can you snap some pics?

djracer · 05-05-2008, 06:24 AM

I haven't done his yet! I will do my little brothers first! I run a 4.30 with a 33 tire. I might do a 3.73 or 4.10with your shorter tire and spray it dead out of the hole!

04-20-2008, 03:42 AM	#1
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Rear widths.. Can anyone tell me the width of the 5 lug rears (I think late 70-73)? Thanks in advance. __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

04-21-2008, 08:33 AM	#2
djracer Registered User Join Date: Feb 2001 Location: Wetumpka, Al, U.S. Posts: 8,892	Re: Rear widths.. I think they are wider than your stocker! __________________ Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!

04-21-2008, 11:11 AM	#3
wild one Registered......... Join Date: May 2006 Location: Livermore,CA Posts: 288	Re: Rear widths.. Stock width for a 1966 is 62" from drum to drum (point where the wheels mount). The width for a 1971/1972 is 63.5" from drum to drum. The 1973 up rear ends are wider still. __________________ 1966 C10 panel-400 small block/TH 350 combo Nothing is fool proof to a talented fool! Popcorn: Pops at exactly 444 degreese Expands to 44 times it's original size Has a 4 year shelf life Last edited by wild one; 04-21-2008 at 11:12 AM.

04-21-2008, 08:22 PM	#5
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: Rear widths.. So rear track width would narrow up 1" on each side with a 61.5" rear.. I have a later 71+ 5-lug rear. __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

05-04-2008, 08:03 PM	#7
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: Rear widths.. By my calculations (should have measured when the wheels were off) it's 63.5" wide. My tires messure out to almost exactly 12" I have a 12" draglite with a 7.5" BS. So total width tire edge to tire edge is 74.5" - 11" for the total BS and I get 63.5". I am looking for a 9" right now that is 61.5" - 63.5" to replace the 12 bolt with. Any suggestions would be great. __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

05-04-2008, 10:00 PM	#8
djracer Registered User Join Date: Feb 2001 Location: Wetumpka, Al, U.S. Posts: 8,892	Re: Rear widths.. the exporer rear would be just a little narrow at 60.25 with 31 spline axles. just put a spool in it and it sould be pretty good for cheap. __________________ Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!

05-05-2008, 04:20 AM	#9
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: Rear widths.. Any idea on the gear ratio? I'm just not to sure about going that narrow. Did you gt the one in your uncls truck. What wheels are on it. Can you snap some pics? __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

05-05-2008, 06:24 AM	#10
djracer Registered User Join Date: Feb 2001 Location: Wetumpka, Al, U.S. Posts: 8,892	Re: Rear widths.. I haven't done his yet! I will do my little brothers first! I run a 4.30 with a 33 tire. I might do a 3.73 or 4.10with your shorter tire and spray it dead out of the hole! __________________ Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!



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