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76stepsidechevy · 05-20-2013, 08:25 PM

If you didn't have a trans with OD i'd say keep the 3.73. There really isn't a huge difference between 3.73s and 4.10s so If you're going to drop the coin I'd step up to 4.56s or otherwise stick with 3.73 and save the cost of changing the gears in the front to match. If you're anything like me you'll end up going bigger in the future anyways. I started out with 3.73s and 32s with a sm465 (no od) I went to 33s, 35s. and now I'm on 37s and use the granny gear to get the truck moving without wasting the clutch.

05-20-2013, 08:25 PM	#5
76stepsidechevy Registered User Join Date: Nov 2010 Location: Windsor Locks Posts: 628	Re: gear ratio gm 14bolt upgrade If you didn't have a trans with OD i'd say keep the 3.73. There really isn't a huge difference between 3.73s and 4.10s so If you're going to drop the coin I'd step up to 4.56s or otherwise stick with 3.73 and save the cost of changing the gears in the front to match. If you're anything like me you'll end up going bigger in the future anyways. I started out with 3.73s and 32s with a sm465 (no od) I went to 33s, 35s. and now I'm on 37s and use the granny gear to get the truck moving without wasting the clutch.