The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Gearing suggestions for my LS swapped truck

tucsonjwt · 05-13-2018, 06:46 PM

Having bought a lot of new Tahoes, Yukons, Silverados, and Sierras in the past 15 or so years, the 3.73 is the most common rear axle ratio for some light towing and adequate acceleration, but the 3.23 is better for fuel economy and highway cruising, IMHO. The difference in fuel economy between the two ratios will not be noticeable if you drive with a heavy foot.

05-13-2018, 06:46 PM	#3
tucsonjwt Registered User Join Date: Jul 2007 Location: Tucson, AZ Posts: 3,188	Re: Gearing suggestions for my LS swapped truck Having bought a lot of new Tahoes, Yukons, Silverados, and Sierras in the past 15 or so years, the 3.73 is the most common rear axle ratio for some light towing and adequate acceleration, but the 3.23 is better for fuel economy and highway cruising, IMHO. The difference in fuel economy between the two ratios will not be noticeable if you drive with a heavy foot.