ryansws6

About 8 years back when LS1 stuff was still expensive, I bought a 1LE drive shaft or I think it is. Bottom line it is alum but about 2.5 dia. Point is I had lost a cap and other OE caps didn't fit!? So I decided to replace the U, I pulled it out and tried to replace it. Now I'm SOL because no one seems to have the right u joint. The ones I keep getting are too big...I'd like to put this in my 92. Any help???

Twin_Turbo

iTrader: (25)

if it's a 1310, there are 2 sizes of caps.
Same if it's a 1330. A 1330 uses a 1350 sized body but 1310 sized caps, so they have 2 sizes too.

ryansws6

Thanks so much, there had to have been 2 sizes. Now I just need to find the u joint. I took it off so I need to find it. Drive shaft is a spicer F2899 and p# on the cap is 5211. So whats a 1310/1330?

Thanks again

88 350 tpi formula

iTrader: (9)

I replaced mine years ago when I was looking for a noise.. every parts store had them

AlkyIROC

Standard GM u-joints for third gens are called Saginaw 3R. They're not a typical Spicer size.

According to napaonline, the aluminum driveshaft uses a Precision 369 at the transmission and a 372 at the diff.

Precision 369 is Spicer 5-153X which is a 1310 series u-joint
Precision 372 is Spicer 5-3022X which is a combination u-joint with 1310 on one axis and Saginaw 3R on the other which will fit into the diff yoke.

With the Precision or Spicer number, you should be able to find these at any parts store.

ryansws6

Yeah every parts store has one, but not the one that fits the 1LE DS 2.5". I can get it for my LS1 3" dia DS.

ryansws6

Thanks ALKY I agree, seems to make the most sense! I'll take the DS to Napa just in case...

AlkyIROC

The 3" driveshaft should use 1330 or more likely, 1350 u-joints.

Twin_Turbo

iTrader: (25)

1350s are very uncommon on driveshafts.

DJP87Z28

If it is a 1LE aluminum dr shaft it is 2 3/4 dia NOT 2 1/2. This may be the problem asking for a part with the incorrect info.

Note: Steel dr shafts are 2 1/2 dia.
2 3/4 1LE aluminum 3rd gen & 4th gen (LT1 cars)
3 aluminum 4th gen LS1 cars
Same for both auto & manual transmissions.

DJP87Z28

I replaced the front universal joint Saturday and the above part number info was very helpful.