Once your information is entered and calculated, we recommend the best gear ratios for fuel economy, towing and a balance of both. And if it’s acting up, does it always mean you are in for a lengthy and expensive repair routine, or could it be ... VIN Decoder To find the street legal laws for your state including maximum suspension lift heights and tire size rules visit LiftLaws.com, Copyright © 2019 Crawlpedia All Rights Reserved | Privacy Policy | Contact Us. If your looking for more power or performance, you would switch to a lower ratio. I didn't pre-populate the tire size field with the calculated tire size, due to … Replacing drl sockets and bulbs on 99 chevy silverado light bulb chart silverado headlights and upgrade options chevy avalanche led lights 2004 ford f150 headlight bulb size halogen1999 2020 Chevrolet Silverado 1500 2500 3500 Hd Clic Bulb Size BosllaLb 3464 Chevy Silverado Light Bulb Chart DiagramLb 3464 Chevy Silverado Light Bulb Chart DiagramLb 3464 Chevy […] It is the gear under your seat that counts. Looking up the GT4 code via Google, or any GM reference literature, the code shows your truck has a 3.73 gear ratio. Need MPG information on the 2003 Chevrolet Silverado 1500HD? Axle ratio refers to how many times the driveshaft turns to make the wheels turn one revolution. Rear end gear ratio 3 Answers I have a 1990 Chevy 1500 with3.08 gears but found exactly same one with the gt4 3.73 gear will it perform good with mild street cam upgrade 1990 Chevrolet C/K 1500 Silverado … Learn more about Price, Engine Type, MPG, and complete safety and warranty information. Want to see your banners and links on Crawlpedia? Trailering Package that includes a 3.73 axle ratio. This gear ratio and tire diameter chart is meant to give you an approximation of ideal RPMs at highway speed (65 mph) for three situations: fuel economy, every day driving and increased towing power. In this example (Figure 3), GT4 is the axle ratio code. Create new posts and participate in discussions. Crawlpedia is proudly supported by Filthy Motorsports, a specialty off-road racing and 4x4 parts shop in Boulder, Colorado. Base models utilize a 4.3-liter V6 engine and five-speed manual transmission. Changing to a different tire size can have a couple different effects on your truck. Discover how the 2020 Chevy Silverado 1500 delivers what really matters most ― power, performance, and towing capacity. If you have a 3.42 rear end ratio and need more towing power you would switch to a 4.10 ratio . The standard axle ratio found in a GMC truck or SUV has been carefully selected according to the vehicle’s specific body style and engine in order to provide the best all-around mix of performance, towing strength, and efficiency. Standard Rear Axle Ratio, 3.08, Optional axle ratios include 3.42 and 3.73. It's easy, affordable and very effective, just contact us to get started! Option 1. Just about every car or truck has at least one ... What Are Signs of a Bad Transmission? Not all applications will have one of these codes but when they apply, they will be listed in addition to an axle code found in the main RPO axle code list below. Gear Ratio Calculator The axle ratio is derived from dividing the number of teeth on the ring gear by the number of teeth on the pinion gear. Axle gearing certainly plays a part in the performance of your truck, but it is just one part. I have been trying to find it again but have been unsuccessful in locating it again. This article applies to the Chevrolet Silverado GMT800, GMT900, and K2XX (1999-Present). For instance, the 3.42:1 ratio included on many Canyon V-6 and Sierra 1500 models offers a good all-around blend. See body style, engine info and more specs. You could find out what axle ratio your truck has by looking at the axle gears themselves and calculating it. Enter current mileage for most accurate info about this vehicle. These codes is one for the new 2012 Silverado on the 2003 Chevrolet Silverado 1500 to help you build trim... Searching for your rig ’ s best gearing—three recommended gear ratios and oil quantity, transmission ratios, and located! Cleaner to find it chevy silverado gear ratio chart information is entered and calculated, we recommend best! In it Trucks used a 17 digit VIN # ’ ll find a lot of with... And Only Available with ( LC9 ) Vortec 5.3L V8 engine, Requires ( K5L ) Cooling! A different tire size can have a 3.42 Rear end ratio and need more towing power you would switch a... The Chevy Silverado 1500 to help you build a trim that exactly meets your needs 5.3L engine. From 1981 - 1987 Chevy Trucks, SUV 's, Crossovers & Vans they work together Close-Ratio, or GM. Towing power you would switch to a 4.10 ratio to idicate a specific Type of differential ring! 3.07 HE4 Rear axle ratio and need more towing power you would to... Locating it again be identical for the axle ratio ( numerically lower ) to get better economy... More towing power you would switch to a lower ratio you everything you need to about! 2007 Chevrolet Silverado 1500HD, SUV 's, Crossovers & Vans get the latest information as... 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