Gear Ratio Help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dromano · 04-18-2017, 06:10 PM

I have a '72 SWB GMC that I am currently swapping out the old 350 for an LS1.

I have a 700R4 Tranny that I am keeping. I don't plan on tacking the truck to track but want it to come off the line but will also see some good highway miles.

I plan to replace the current rally wheels for 20'' US Mags in the coming months.

What gear ratio would everyone recommend given my set up and how I plan to drive.

I'm currently thinking 3.73 but would love everyone's advice.

04-18-2017, 06:10 PM	#1
dromano Registered User Join Date: Oct 2012 Location: Austin, TX Posts: 34	Gear Ratio Help I have a '72 SWB GMC that I am currently swapping out the old 350 for an LS1. I have a 700R4 Tranny that I am keeping. I don't plan on tacking the truck to track but want it to come off the line but will also see some good highway miles. I plan to replace the current rally wheels for 20'' US Mags in the coming months. What gear ratio would everyone recommend given my set up and how I plan to drive. I'm currently thinking 3.73 but would love everyone's advice.



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