What does the rear axle identification code mean?

What does the rear axle identification code mean?

The rear axle identification code consists of at least a two letter prefix indicating the gear ratio, a letter for the GM Division, and three digits indicating the day of the year from January 1.

Which is El Camino has 28 or 31 spline axles?

The 70-79 Ranchero/Torino are considered a high performance unit again being produced with both 28 and 31 spline axles. The 69-77 Galaxie/Lincoln and 73-86 half-ton pickup used both size axles and the 31 spline version should be considered the strongest available and can be used for extreme duty applications.

What is the RPO code for a GM transaxle?

GM RPO Axle Code List (G) RPO Axle Type Ratio G11 Transaxle 2.56 G44 Rear Axle 3.07 G72 Rear Axle 2.14 G75 Rear Axle 3.62

What is the rear axle code on a Chevelle?

The casting numbers/letters on rear end housings may have either a prefix or suffix of “N” or “NF” and no reason has been found yet why they may have one or the other. * Engine RPO code and size following the rear axle ratio are taken from build sheets and may not reflect the only engine the rear axle codes came with.

What kind of engine did the 1965 El Camino have?

There is no breakdown of engine type or size by specific series/model other than 6-cyl. vs. 8-cyl. The 396 8-cyl engine was only available in the 13837/67 Malibu SS. Disclaimer **Information was pulled from the 1965 Chevelle RPO codes and while many cross over some may not have been available on El Camino models for the 1965 model year.

What is the Axle code for a GMC?

GM RPO Axle Code List (F) The following is a complete list of GM RPO axle codes for Chevy and GMC vehicles starting with the letter F. RPO. Axle Type. Ratio. F16. Transaxle. 2.53. F17.

What is the RPO code for a rear axle?

GM RPO Axle Code List (H) RPO Axle Type Ratio H01 Rear Axle 3.07 H04 Rear Axle 4.11 H05 Rear Axle 3.73 H12 Rear Axle (Eaton 21065S) —