- What's the number on the paper sticker on the case top cover? 13-52-028.
- Is it a World Class or Non-World Class T5? I don't know.
- How many splines does the input shaft have? 26 splines.
- How long is the input shaft? 6.5 inches long and 1.125" diameter at the splines.
- What year, make, and model vehicle did it come out of? I bought it from a guy who had it in his Camaro. I don't know what year Camaro.
- How was this T5 used? Hot Rod or Daily Driver? I used it in my S10 truck with a 350 SBC engine but I never did any drag racing with it.
- Is it really a 5 speed or a 4 speed. It's a 5 speed.
- Has it ever been rebuilt? Who did the rebuild? I had it rebuilt about 1500 miles ago by the local Technical College Automotive Class. That's when they put the S10 tail shaft housing on.
- How many miles are on the T5? About 1500 miles since the rebuild but I don't know how many before that. My S10 was rear ended so now I'm selling the T5 because I don't need it.
After doing some internet research, you get in your car believing you are headed to see a 1983 NWC T5 with a 2.95 1st gear and 0.73 OD gear. The 26 splines means that it originally came from a V8 car. It had an S10 tail shaft housing swap done at some point. You arrive and begin your visual inspection.
This is turning into a puzzle. The internet said that a 13-52-028 T5 has a 0.73 OD but this T5 has a 0.63 OD. So is the internet wrong again? Maybe the case cover came from a 1983 T5 and the case and gears inside are from a 1990 WC T5?
What are the possibilities?
- It's possible this is a 1990 WC V8 T5 (26 spline input shaft and it probably has Dextron II inside).
- It's possible that the 1983 case cover ("83 flower") came from another transmission (a non-WC T5).
- We suspect this is a WC case, but we don't have proof.
- It is understood that 1983 non-WC gears will NOT work inside a 1990 WC case, and we suspect this is a WC case, but we don't have proof.
- It's understood that the S10 tail shaft housing is not original, so it doesn't help solve the puzzle.
So far, the only things we know for sure are:
1. It is a Chevy style case with a V8 style - 26 spline input shaft, with a 2.95 1st gear and 0.63 OD gear,
2. The gears spin freely and everything seems to be in working order.
3. The input shaft splines are in nice shape.
4. It is understood that the S10 tail shaft housing is not original.
5. The 1983 "flower" date indicates the case cover is from a 1983 T5, but the 1990 date on the case indicates it's a 1990 T5 - not a match.
To solve the puzzle, we need to see the countershaft gear bearing cup. A look inside the case will also help identify if it's a WC T5 or not.
We find the answer to this puzzle by removing the bell housing and looking at the countershaft gear bearing cup.
1. You know it's a WC T5 because of the type of countershaft gear bearing cup. The Dextron II ATF stickers help confirm this.
2. It came from a V8 Chevy Camaro or Firebird because it has a 6.5" long input shaft with 26 splines and is 1.125" in diameter at the splines. Also, a 2.95 1st gear and a 0.63 5th gear are correct for a 1988 thru 1992 V8 Camaro or Firebird.
3. The case cover and tail shaft housing are not original to this transmission.