Ring gears spacers - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ont_guy_38 · 03-13-2010, 10:26 AM

Purchased a rear end sight unseen because the price was so good but when i got it home and opened it up it,s a posi with 3.90 gears and a ring spacer.I want to change to 4.11 or even 4.56 because of my tire size but I have read that running a spacer is not the smartest thing to do.The truck will be mostly street driven (car cruises and such) and the odd trip to the track.Oh ya the tires are DRs also.Anybody out there runnig spacers on their gears?

djracer · 03-13-2010, 06:02 PM

Is it a twelve bolt truck rear?

ont_guy_38 · 03-13-2010, 07:12 PM

sorry forgot about that , no it,s a 10 bolt Dj ,no thick gear available

hotrod 80 · 03-13-2010, 07:17 PM

I've run them before and had no problems . Some of the cheaper ones have runout problems , seen them as bad as .003 . if the correct longer hardware was installed , the inside diameter where it meets the carrier is correct and the runout is good it will probably be ok . I wouldn't run on if i had the choice , but if the price was right ?

03-13-2010, 10:26 AM	#1
ont_guy_38 Registered User Join Date: Jul 2007 Location: Ontario Canada Posts: 1,006	Ring gears spacers Purchased a rear end sight unseen because the price was so good but when i got it home and opened it up it,s a posi with 3.90 gears and a ring spacer.I want to change to 4.11 or even 4.56 because of my tire size but I have read that running a spacer is not the smartest thing to do.The truck will be mostly street driven (car cruises and such) and the odd trip to the track.Oh ya the tires are DRs also.Anybody out there runnig spacers on their gears?

03-13-2010, 06:02 PM	#2
djracer Registered User Join Date: Feb 2001 Location: Wetumpka, Al, U.S. Posts: 8,892	Re: Ring gears spacers Is it a twelve bolt truck rear? __________________ 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!

03-13-2010, 07:12 PM	#3
ont_guy_38 Registered User Join Date: Jul 2007 Location: Ontario Canada Posts: 1,006	Re: Ring gears spacers sorry forgot about that , no it,s a 10 bolt Dj ,no thick gear available

03-13-2010, 07:17 PM	#4
hotrod 80 mini truck racer Join Date: Aug 2006 Location: Baytown , texas Posts: 3,010	Re: Ring gears spacers I've run them before and had no problems . Some of the cheaper ones have runout problems , seen them as bad as .003 . if the correct longer hardware was installed , the inside diameter where it meets the carrier is correct and the runout is good it will probably be ok . I wouldn't run on if i had the choice , but if the price was right ? __________________ 1949 5-window 1969 Camaro 1976 Chevy Luv yellow 1978 Chevy Luv Blue 1976 Chevy Luv Black 1979 Firebird Flooded in Harvey 1999 F350 Dually 2005 GMC Sierra 4.8 RCSB 2014 Explorer (wifes) My build :http://67-72chevytrucks.com/vboard/s...d.php?t=399148 Build #2: http://67-72chevytrucks.com/vboard/s...d.php?t=653583 Last edited by hotrod 80; 03-13-2010 at 07:19 PM.

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