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**mongocanfly** · 04-05-2021, 10:53 PM

With the od trans and 29-30in tire, youd be fine with 3.73s if you wanted to go that route and get a trutrac..
My 99 with 4l60 had 3.73s...it was a nice setup...
Nothing wrong with keeping your 3.42s though..my 13 truck has 3.42s....
Only about 200rpm diff between 3.42s and 3.73s with your setup at 65mph...

04-05-2021, 10:53 PM	#10
mongocanfly Post Whore Join Date: May 2015 Location: Alabama Posts: 14,604	Re: Options for posi? With the od trans and 29-30in tire, youd be fine with 3.73s if you wanted to go that route and get a trutrac.. My 99 with 4l60 had 3.73s...it was a nice setup... Nothing wrong with keeping your 3.42s though..my 13 truck has 3.42s.... Only about 200rpm diff between 3.42s and 3.73s with your setup at 65mph... __________________ Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver Last edited by mongocanfly; 04-05-2021 at 10:59 PM.