TC size in 4l60e?

[Ghostyman25]

Well i went to O'reilly's yesterday planning to get a replacement TC and i was told that my 99 used 2 different sizes. :whyme: I know,im sure he was looking at the 99 classic and my 99. :dunce: Basically it would be very helpful if someone could tell me if my TC is the 12" or 12 1/2" one. I would take mine out and bring it up there however they would have to order one and i cant be truckless that long. Thanks everyone.

[Ghostyman25]

Anyone? Well i went to an Advanced and the guy actually let me look at the screen. One of the Tc's is an 1800 stall and the other one doesnt list stall. Both are 33 spline.

[Ghostyman25]

Bump

[NEUMANNZZ]

nbs or obs? 4.3?

[NEUMANNZZ]

call them and find out:

http://www.ariindustries.net/gm-4l60e-1999-and-up-torque-co4601999.html

[Ghostyman25]

Nbs,the 99 classics only came with 5.0/5.7's IIRC.

[Pauly]

1999+ 4.8/5.3 trucks use the larger 300mm TC, while the trucks eqipped with 305/350 use the smaller 12" TC.
4.8/5.3 come stock with 300mm, you can use a 278mm I-6 Trailblazer TC for a bit better performance
5.0/5.7 came with 298 mm.

I dunno about 33 splines on the input shaft, my 60e has 30 splines. IIRC the 4l80e has 32 spline input
peace
PAuly

[Koots]

Nbs,the 99 classics only came with 5.0/5.7's IIRC.

My truck is technically a 99 but i call it a 98 but it comes with a 4.3L. just wanted to throw that out there...