What rear end is in a 79 Trans Am?
All 1979 W72 T/A’s came with 3.23 posi rear axles. The early literature states that all 403 cars came with 2.41 gears, but I had a ’79 WS6 403 Trans Am and the build sheet shows a 2.73 rear axle.
How do I identify my old Endmobile rear end?
Buick and Oldsmobile axles can be identified by their code, usually found on the right rear side of the differential carrier or on the passenger side axle tube. The axle code, if on the differential, is comprised of one or two letters for 1964-’70 models, followed by a three-digit build date.
How do I identify a GM 12 bolt rear end?
The easiest way to identify a 12-bolt rearend is obviously by the 12 bolts holding the rear cover onto the axle housing. The pinion shaft on passenger-car differentials is 1-5/8-inch in diameter and the cover is oval, measuring 10-15/16-inches wide by 10-5/8-inches tall.
Can you tell gear ratio from Vin?
While it may be possible to derive information about an auto’s gearbox ratio from its VIN, that depends largely on the information the manufacturer includes in the vehicle descriptor section (VDS) of the VIN.
How can I tell what 10 bolt rear end I have?
The easiest way to identify the 8.2-inch rearend at a glance is by the shape of the housing and the spacing between the lower bolts on the cover. The 8.2-inch 10-bolt has a smooth, round, lower-case area (no cast-in protrusions), with an 11-inch cover that has a diagonal protrusion at the top.
How do I identify my GM rear differential?
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.
What is the UPC on a Trans Am?
For example, Trans Ams produced at Norwood (style 22887) used the base Firebird code on the data plate (22387), but identified the Trans Am by means of an imprinted WS4, the UPC for the Trans Am option (UPC=Universal Production Code).
What was the SR code on Trans Am World?
Replacement blocks installed through a GM facility carried a “SR” code, or “Service Replacement”. Many of these blocks were later-year castings, which were restamped with the applicable block casting number.
Is the rear end of a Trans Am Posi?
I looking at buying a rear end out of a trans am (Smokey & the bandit type car) its posi but i don know if its a decent rear end or if it will fit in my 73 camaro…need some help here. Disc brakes? It will bolt up to the frame, springs and shocks fine.
What was the year of the first Trans Am?
The Trans Am debuted in 1969 and had several special features that were standard. 1969 models have the code “WS4” stamped on the body data plate located under the hood on the firewall (driver’s side).
