1999 4t65e-HD "TAG" XB W 0352 610XBB - 901 9679AD can anyone tell me what final drive this is ? 2.93? 3.23? Looked at other links, just can't decifer it. Thanks

9XAB is a 3.29
Could you have misread tag?

NO, Large XB, 610XBB, and W035Z on tag. Large 901 and small 9679AD Cast into the Housing. it's out of a 1998 GTP Daytona

From gmtuners website it is from a 2000 Regal or Grand Prix, 3.29 final, 37/33 chain ratio for an overall ratio of 2.93.

The important characters are 0XBB.

[This message has been edited by olejoedad (edited 03-15-2017).]

so. "acceleration wise", is it normal or better than most ? Thanks

The 37/33 chains hurt acceleration, as compared to a trans with a 3.29 differential and 35/35 chain ratio.

so, if it's not the chain and gears Changing the gearing, WHAT Part in the TransAxle IS "changing" (what would have been the "rear end ratio" In a Rear Wheel Drive Car ??) it's not the final drive with the spider gears). As far as I've noticed, the only way of changing the Ratio IS the Gears and Chain. What am I Missing here ?? Thanks. Is there a Forum where it tells HOW to "Soup Up" a 4t65e-HD for better Performance ? Thanks again

The trans is available with different combinations of sprocket ratios (chain) and differentials.

Check out the excellent information available on gmtuners.com.