Get advice from our specialists to make sure you’re choosing the right part for your vehicle and setup.
$795.00 NZD
Get advice from our specialists to make sure you’re choosing the right part for your vehicle and setup.
This GM 8.4 3.73 Ring and Pinion is a Revolution Gear replacement set built for 1955 to 1964 Chevrolet passenger cars fitted with the 8.4″ drop-out differential head. Revolution Gear manufactures it from 8620 steel and precision heat-treats it to OEM specifications, so it holds up to the demands of daily driving, off-roading, and racing alike.
In particular, 8620 steel is a proven choice for ring and pinion gears because it balances strength with the toughness needed to resist chipping and wear. As a result, the gears hold their shape and tolerances under load after heat treatment. Additionally, Revolution Gear’s extra lapping step extends the working life of the gear set, which standard aftermarket alternatives often skip entirely.
This set suits Chevrolet passenger cars built between 1955 and 1964 that use the 8.4″ drop-out differential head. The 3.73 ratio suits drivers who want a balance between off-the-line acceleration and comfortable highway cruising. However, GM used several different housings across this era. So, always confirm your differential’s exact specifications before ordering.
Revolution Gear and Axle has built its reputation over more than a decade of street, off-road, and race use. In particular, enthusiasts trust the brand because it delivers consistent quality across a wide range of applications, not just classic GM passenger cars. As a result, that track record gives you confidence. Overall, this gear set will perform as well in your project as it has in thousands of others already on the road.
Not sure if this ring and pinion set matches your differential? Get in touch and we’ll help you confirm fitment before you order. For more on Revolution Gear’s GM ring and pinion range, see their official product category page.
