* Transmission type: Plymouth Barracudas in 1974 could have had several different automatic transmissions (e.g., TorqueFlite 727, 904). Each had different gear ratios.
* Engine size and option: The engine's displacement (e.g., 318, 340, 360 cubic inches) and performance options influenced which transmission was used and potentially the final drive ratio in the rear axle. A higher-performance engine might have a different final drive ratio for better acceleration.
* Rear axle ratio: The rear axle ratio (e.g., 2.73, 3.23, 3.55) is a crucial part of the overall gearing. This is the ratio between the driveshaft speed and the wheel speed.
To find the exact gear ratios for a specific 1974 Plymouth Barracuda, you need to know:
* The specific transmission type (e.g., TorqueFlite 727, 904). This information is usually found on a sticker or tag on the transmission itself, or in the owner's manual (if you have one).
* The rear axle ratio. This is usually stamped on a tag on the differential housing or can be found on a build sheet if you have one.
Once you have this information, you can look up the gear ratios in a repair manual for that specific year, model, and transmission. You can also find this information online via forums dedicated to classic cars (like the Plymouth Barracuda forums) or through parts catalogs.
