8.5 or 8.6...?
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8.5 or 8.6...?
I've got a 2004 2WD 1500, which size rear end is it?
I thought it was an 10-bolt 8.5 rear end.
Tried to buy something for it and was told it was an 8.6...??
EDIT: Nevermind, I got some good information by searching. Turns out GM changed in 2001 from an 8.5 to 8.6, but some parts are still universal, but some aren't...
I thought it was an 10-bolt 8.5 rear end.
Tried to buy something for it and was told it was an 8.6...??
EDIT: Nevermind, I got some good information by searching. Turns out GM changed in 2001 from an 8.5 to 8.6, but some parts are still universal, but some aren't...
Last edited by buzzkillwill; 02-10-2009 at 01:12 PM.
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You might be right... After re-reading, might be 2000, I'm not sure...lol
My concern was I bought a true-trac for an 8.5 rear and and 4.10 gears.
Then, went to get the install kit and was told it was 8.6, not 8.5- I got a lil' nervous.
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I was wrong apparently, the ring gear is the same size at 8.5" but the install kits are different just like GMCtrk said. 8.6 is always 30 spline and came on 99 and up trucks (NBS).
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