What axle ratio does my Silverado have?

The 2020 Chevy Silverado 1500 provides two different axle ratios for you to choose from. Whether you’re looking for a higher towing capacity with the 3.42 rear axle ratio or better fuel economy with the 3.23 rear axle ratio, the 2020 Silverado 1500 has your back.

What is the rear end ratio in a Chevy Diesel?

Rear axle ratio changed from the 3.73 that Duramax was born with in 2001, to the more common in GM trucks, 3.42. This should work with the lower first gear now in the new Allison 10-speed.

What gear ratio is in a Duramax?


Hydra-Matic 6L90 Allison 1000
Type: 6-speed automatic (w/ Vortec 6.0L) 6-speed automatic (w/ Duramax 6.6L)
Gear ratios (:1):
First: 4.03 3.10
Second: 2.36 1.81

What is the gear ratio in the 2020 Duramax?

The Duramax/Allison® combination’s standard axle ratio is lowered to 3.42:1, which reduces engine speed, therefore enhancing refinement. “The 6.6L V-8 Duramax diesel and Allison® transmission is a legendary combination in the HD truck market with proven durability and capability that our customers expect,” said West.

What gear ratio is a 12-bolt Chevy rear end?

Probably the easiest 12-bolt differentials to find are the type 2 units. These are found primarily in standard-performance Chevrolet passenger cars. Type 2 ratios were somewhere between 2.29:1 and 2.73:1.

Is a 3.23 rear end good for towing?

AXLE RATIO The lower the ratio, the better the fuel economy and speed but lower the towing power. The 2021 Silverado 1500 provides two axle ratios: 3.42 and 3.23. If you’re looking for a higher towing capacity, choose the 3.42 rear axle ratio. If it’s optimal fuel economy you’re after, choose the 3.23.

What rear end is in a Chevy 2500?

Chevy uses an AAM 11.5-inch rear axle and 9.25-inch front axle for both the gas and diesel drivetrains in the 2500 and 3500 models.

Is the 10 speed Allison really an Allison?

There’s one interesting tidbit of information about the 2020 Silverado HD’s hardware you may not have heard yet, though. That new Allison 10-speed isn’t actually made by the familiar Indianapolis-based engineering firm. It will be built in-house by General Motors and simply features Allison branding.

What gear ratio is a 10 bolt Chevy rear end?

The Yukon Ring & Pinion (PN YG GM8. 2-355) is a standard 8.2 3.55 gear ratio that is made of 8620 steel.

What gear ratio do I need for 35 inch tires Silverado?

If we settled on 33-inch tires, the recommended gear ratio was 4.10:1; 35-inch tires: 4.56:1 gears; 37s: 4.88:1.

What kind of rear differential does a Chevy have?

History and Identification of Chevy 10 and 12 Bolt Chevy Differentials Chevy 10- and 12-bolt axle assemblies have been standard equipment on GM passenger cars, muscle cars, and trucks for decades. The rugged, reliable, and efficient Chevy 12-bolt has established itself as the preeminent rear differential for GM muscle cars since its debut in 1965.

What is the standard axle ratio in a GMC truck or SUV?

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. For instance, the 3.42:1 ratio included on many Canyon V-6 and Sierra 1500 models offers a good all-around blend.

How much HP can a 10 bolt rear differential transmit?

However, the 8.5- and 8.6-inch 10-bolts are extremely stout and effective rear differentials that can transmit up to 1,000 hp to the rear wheels. This Tech Tip is From the Full Book, CHEVY DIFFERENTIALS: HOW TO REBUILD THE 10- AND 12-BOLT.

What is meant by a higher drive shaft ratio?

If the number of drive shaft turns required to turn the wheel goes up (i.e. 4.10:1) the ratio may be referred to as a higher numeric ratio.