The Detroit Truetrac is becoming the differential of choice. You can get it for a good price on ebay: GM 8.5" CHEVY 10 BOLT 8.6 DETROIT TRUETRAC POSI 913A481:eBay Motors (item 330335502533 end time Jun-14-09 09:19:01 PDT)
If you get it, make sure you run regular gear oil not synthetic. The synthetic has given a few people lock up problems.
Big slow mud truck with a TUNE!!!!!!
I think the friction modifiers would be more of the issue and cause problems than it being synthetic. I've been running straight Mobile 1 sythetic gear oil in the factory weight since the gear and True Trac swap with no issues, about 5K miles.
2002 Silverado 2500HD LB7 CCSB LT
EFI Live by Rob at ATP, Edge CTS Insight DSP 5 control, S&B CAI, PPE boost valve, Pro Fab AIH, AirDog II 165, PPE WIF sensor delete plug, 5" stainless exhaust, Cognito braces & HD tie rods, H2's 315/70 R17 BFG's
2004 Tahoe LT
2006 Silverado Z71 LS
1971 Chevy C10
275 is width in mm which is equal to 10.82 inOriginally Posted by 99LS1
60 is the aspect ratio which is the distance from the lip of the rim to the edge of the tire.
60% of 275 is 6.5 in
6.5x2+17(rim diameter)= 30in which is like zebra said, half inch shorter than 245/75R16
'02 Silvy: Z71 EC Step Side 5.3L Nelson tuned
2013 GMC Acadia: SLT1 Carbon Black
1976 Corvette Stingray: Trying to save it, progress is slow.
^Ricky's Sweet PS Skilz
09/21/2010 02:31 <danger_ranger83> I'm not really worried about the looks...I want it to be fast and ugly...bc no one wants to get outrun by something ugly
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