what gears came in the 63' stock rear end? | Chevy Nova Forum
Jan 10, 2007 · How do you check the ratio? Something about turning the rear wheels. Put the rear tire valve stem in a known position, tape a pice of string in a known position on the drive shaft, roll car till tire goes one revolution, and count the wraps …
1958-1970 Full size rear Differential Identification - 348-409.com
The gear ratio codes are located on the front passenger side of the differential as shown in the illustration below. This code will tell you the ratio, whether it is posi or not, any special notes and what plant it was made at.
Nova Rear Axle Codes - NovaResource
Jul 2, 1998 · The rear axle ratio may be determined by finding the two- or three-letter serial number prefix in the following table. The 1962-63 serial numbers are located on the front, right side of the differential carrier. The 1964 serial numbers are found on the bottom of the carrier.
Chevy Rear End Gear Ratio Chart - Autos Hub
To know your Chevy’s rear-end gear ratio, check the table using your RPO code. RPO code can be found on the driver-side door panel or glove box. Alternatively, the GM rear end can be identified by the diameter of the ring gear (7.5 inches, 8.5 inches, or 10.5 inches).
Chevy Rear End Gear Ratio Chart: Explore the ... - The Daily …
Sep 2, 2023 · Upgrade your Chevy’s rear-end gear ratio for improved performance using the comprehensive Chevy rear-end gear ratio chart as a reliable guide. Find the perfect gear ratio to optimize acceleration, towing capability, and fuel efficiency.
GM RPO Axle Code List | GM Axle Gear Ratio Lookup
To find the axle gear ratio of any GM vehicle, locate the RPO sticker (typically located in the glove box) and write down any codes starting with F, G, or H. Then, find those codes in the table below. These RPO codes are used to idicate a specific type of differential and/or ring gear size.
1963 Impala Rear Axel Ratio's - Chevy Message Forum
Oct 6, 2002 · You REALLY need a wide ratio 4sp, or, a lower (higher numerically) rear gear, such as a 3.55, 3.70. If you have a close ratio 4sp, as already mentioned, you would be better off by swapping in a wide ratio 4sp and keep the 3.08.
63' Chevy C30 Dually Rear End Identification - The 1947
Sep 11, 2018 · We did the "turn the tire twice and count how many revolutions the driveshaft makes" and found it has somewhere around a 5.13 gear ratio in the rear. The truck motor screams at 4,000rpms at 70mph. I want to buy a set closer to 3.23 that will take the rpms at 70mph down to a more acceptable 2500rpm.
GM RPO Codes – Axle Ratio and Differential Identification
Identify your GMC or Chevrolet rear end gear ratio by the RPO Codes, usually located on the placard labeled “Service Parts Identification” inside the drivers door panel or glove box. (Accurate identification using the GM RPO code assumes that the …
63 impala rear end | Impalas.net
Aug 27, 2017 · The highest gear ratio that will bolt into your differential case is a 4.88 gear. You would probably notice a 4.88 or even a 4.56 gear as you would indeed be RPM limited with a gear that steep and hydraulic lifters. These gear ratios required solid …