i saw the post about the zexel posi unit,,,is this a good unit,,,and in the package slp is selling are the ring and pinion gears qualitly gears?....does anyone have any pros and cons about the zexel unit?....help

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86 Trans Am,T-Tops,305tpi,7r4(rebuilt w/shift improvments&added clutches,9-bolt(2:77:,flowmaster,3" cat back,,,otherwise completely stock

 

From what I've heard and read, the Zexel-Torsen seems to be a good deal. Price-wise, it's a real good deal. I'm not sure what brand gears are included, though admittedly I probably could not attest to their quality anyways. Personnally, I would rather stick with GM gears. One con about the Zexel unit, at least for you if you were planning to put into your '86 TA is that it is only for 10-bolt rears. It will not work in your 9-bolt rear. Hope that helps.

 

you also need 28 spline axles that did not come in f-body cars until 1990. You can replace your stock 26 spline axles for the 28 splines with no problem. But like Dana92RS said, it won't work in your 9-bolt rear...sorry but those things are a pain in the rear to find parts for and if you do they are expensive! I have one sitting in my garage b/c of that reason with 2.77 gears. $800 for a new posi and 3.45 gears!

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1988 TA 300+hp 350 w/ TBI and Holley TB unit, Holley projection intake,
WC T-5, 3.42 gears w/ Auburn posi. MSD 6A, edelbrock TES headers, dynomax 3" cat and cat-back system, ACCEL coil, polyurethane bushings all around, aluminum driveshaft, Mr. Gasket open air cleaner.

1993 S-10 w/ 4.3L V6 TBI, slightly bigger cam, Mild polish job and 3 angle valve job on heads, Edlebrock TES headers, Dynomax cat back, MSD 6A, ADS chip

2000 Kawasaki KX 125