8.8 rear 28 or 31 spline axles

Not having the best of days today. I just finished putting my 8.8 rear out of my 00' Mustang GT Vert. back together. I ordered Superior Gear axles which arrived at 31 splines. Removing my axles I find a rather large differance in the dia. at the c-clip end. 28 vs. 31 spline. No help from Summit, Superior is on vacation until monday and I have a 1,000 mile trip soposedly going on starting Thursday.

My question, after all the ranting bs I just laid on you is... Are there 2 different live axle rears that were installed in 2000? The new axles came in at 30-1/2" long according to Summit they are 30-5/8" long. I could have miss measured. The old ones are 30-11/16" long, of courese the same goes for these. Old ones are approximately 3/16" longer than the new ones. Do I have a 98' and older 8.8 rear under my Mustang possibly? Just looking for possibilities, thanks for looking. Tag on rear info as follows... It is definately a posi rear.

(top line) S229G (bottom line) 3L27 88 9L16

...Ron

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68' Camaro RS 88' Firebird Formula 00' Mustang GT Vert
Reply to
RSCamaro
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Stock is definitely 28 spline for 96-04. I believe there is a difference in length between the 96-98's and 99-04's but I don't have the specific measurements handy for the stock pieces. Here's a link to Moser's application page, they list the measurements as 29 31/32 for the 96-98 and 30 11/16 for the 99-04 for their replacement units. I'd bet Moser's numbers are accurate.

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No matter how you slice it the 31-spline stuff that Summit sent you isn't going to get you down the road.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Okie Tom - TS #62

1998 GT Coupe 5-spd. 2001 Ranger XLT
Reply to
bluestang98

Thanks, I was beginning to second guess myself for awhile yesterday. Now it's time for me to get back on the phone with Summit to straiten this mess out.

...Ron

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68' Camaro RS 88' Firebird Formula 00' Mustang GT Vert
Reply to
RSCamaro

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