Gxp rear diff?? Is this true?

[13 QTR]

Was dicussing the gxp on local board and a guy posted this about the gxp's rear diff...
And the GXP's ring-and-pinion gears are shot-peened and phosphate-coated for enhanced wear and durability, something that can't be said of the rear ends of some other high-output cars.

Is that true? and is it just for the gxp(3.27 and 3.70)? If true...does that mean my new diff(3.27) is the same??

[99-LS1-SS]

I'm not sure if your 3.27 is the same as the GXP's but the ratios that you listed 3.27 (automatic) and 3.70 (manual) are the GXP ratios.

[GRRRR8]

From what I have read this is true. The diff you bought should be a factory assembly that was for a GXP auto.

[99-LS1-SS]

Charlie, I think you should get the 3.70 gear and some slicks and THEN take your family for a "ride". I know I would love to ride in that setup. It would destroy anything resembling good gas mileage but it sure would be fun to drive.

[13 QTR]

From what I have read this is true. The diff you bought should be a factory assembly that was for a GXP auto.

It should be...the sticker on the underside of the diff was the same as the one I took out. Only difference was the numbers....3.27 ratio.

[GRRRR8]

Charlie, I think you should get the 3.70 gear and some slicks and THEN take your family for a "ride". I know I would love to ride in that setup. It would destroy anything resembling good gas mileage but it sure would be fun to drive.

If I could fit a 28x10.50 on it it would have 3.70 gears!