chevy6.0 Posted August 13, 2007 Report Share Posted August 13, 2007 I have a 2004 chevy VHO. Recently I broke the differential and chipped a couple gear teeth. I'm having problems on knowing what to get. Do I have a 28 or 30 spline pinion shaft? What size is the gear 8.5 or 8.6? And does it matter. I figured yall would be the only people that would know the REAL facts. Thanks Quote Link to comment Share on other sites More sharing options...
12'SROCK Posted August 13, 2007 Report Share Posted August 13, 2007 if its a 10 bolt then you have the 8.5" Quote Link to comment Share on other sites More sharing options...
zippy Posted August 14, 2007 Report Share Posted August 14, 2007 You have an 8.625" 10 bolt rear. Who ever you are buying the parts from is who needs to know this. Quote Link to comment Share on other sites More sharing options...
Big O Posted August 14, 2007 Report Share Posted August 14, 2007 and for the idiots on the site like me ... you should never put ........." I don't know whats in my rear end "........ we get in trouble for laughing out loud too much at work Quote Link to comment Share on other sites More sharing options...
CoolBlueSS Posted August 14, 2007 Report Share Posted August 14, 2007 You have an 8.625" 10 bolt rear. Who ever you are buying the parts from is who needs to know this. Quote Link to comment Share on other sites More sharing options...
12'SROCK Posted August 14, 2007 Report Share Posted August 14, 2007 and for the idiots on the site like me ... you should never put ........." I don't know whats in my rear end "........ we get in trouble for laughing out loud too much at work Quote Link to comment Share on other sites More sharing options...
12'SROCK Posted August 14, 2007 Report Share Posted August 14, 2007 You have an 8.625" 10 bolt rear. Who ever you are buying the parts from is who needs to know this. so do the VHO come with 8.625" and the 5.3 come with 8.5"?? Quote Link to comment Share on other sites More sharing options...
CoolBlueSS Posted August 14, 2007 Report Share Posted August 14, 2007 so do the VHO come with 8.625" and the 5.3 come with 8.5"??99 OBS and older were 8.5. NBS 99 and newer are 8.625. 2005 SS and VHO went to a 9.5" 14 bolt rear. Quote Link to comment Share on other sites More sharing options...
12'SROCK Posted August 14, 2007 Report Share Posted August 14, 2007 (edited) 99 OBS and older were 8.5. NBS 99 and newer are 8.625. 2005 SS and VHO went to a 9.5" 14 bolt rear. Did they change bolt pattern too or just he overall outer diameter when they went from 8.5 to 8.625? difference is .125" will they interchange? Edited August 14, 2007 by 12'SROCK (see edit history) Quote Link to comment Share on other sites More sharing options...
brobradh77 Posted August 14, 2007 Report Share Posted August 14, 2007 and for the idiots on the site like me ... you should never put ........." I don't know whats in my rear end "........ we get in trouble for laughing out loud too much at work some one had a thread earlier about speedo problems.. My first thought was men shouldnt be wearing those anyway..lol Quote Link to comment Share on other sites More sharing options...
CoolBlueSS Posted August 14, 2007 Report Share Posted August 14, 2007 Did they change bolt pattern too or just he overall outer diameter when they went from 8.5 to 8.625? difference is .125" will they interchange?Diameter, but I'm sure the bolt pattern changed slightly. As far as I know the ring gears wont interchange. Alot of the bearings (carrier, pinion) are the same. some one had a thread earlier about speedo problems.. My first thought was men shouldnt be wearing those anyway..lolThere should ba a law against that. Quote Link to comment Share on other sites More sharing options...
zippy Posted August 14, 2007 Report Share Posted August 14, 2007 The 8.6" rear came quite a long time ago replacing the 8.5" (I believe in 98' for trucks). The 04' VHO and 5.3L used the same rear. In 05' the VHO got the 9.5" rear. Quote Link to comment Share on other sites More sharing options...
chevy6.0 Posted August 15, 2007 Author Report Share Posted August 15, 2007 That was a good one huh. No pun intended. When I was getting prices from Summit they told me the 8.5 gear would work. Those idiots. I'll have to look somewhere else. Has anybody had any luck with the Detroit Truetrac? If not throw out some opinions please. What about the pinion? Anybody know? Quote Link to comment Share on other sites More sharing options...
04CHASE Posted August 15, 2007 Report Share Posted August 15, 2007 and for the idiots on the site like me ... you should never put ........." I don't know whats in my rear end "........ we get in trouble for laughing out loud too much at work dam man that was the funniest shit ive heard in a while. Quote Link to comment Share on other sites More sharing options...
12'SROCK Posted August 15, 2007 Report Share Posted August 15, 2007 That was a good one huh. No pun intended. When I was getting prices from Summit they told me the 8.5 gear would work. Those idiots. I'll have to look somewhere else. Has anybody had any luck with the Detroit Truetrac? If not throw out some opinions please. What about the pinion? Anybody know? thats exactly what they told my friend that 8.5 would work...i searched on there site and couldnt find the 8.625 anywhere/. WTF Quote Link to comment Share on other sites More sharing options...
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