2004SSS

iTrader: (25)

just got me a 02 ss camaro. its a m6 ls1 ss. it has 21k miles on it and a few slp parts. i have noticed that the speed is about 10-15 mph off( figured it out pacing a friend) and today i looked under the rear and noticed a ta performance girdle. is there any way i could tell what gears it has without pulling the diff? this would make sense as to why it reading so high. any help is appreciated.

2001NBMZ28

www.f-body.org/gears/ Play with the calculator or get your friend next to you again at a specified speed and check your RPMs.

BlackScreaminMachine

iTrader: (17)

Chalk the driveshaft and turn. so many DS turns for one wheel turn.

Murdock

iTrader: (2)

Right on, just put it in neutral and throw it up on jackstands. Easiest is to go for 2 wheels spins, this gives you DS spins of:

6.84 for 3.42s
7.46 for 3.73s
8.2 for 4.10s

So less than 7, more than 7, more than 8.

2004SSS

iTrader: (25)

cool thanks guys.

2004SSS

iTrader: (25)

ok well i think it still has an open diff. when i spin the tires the drive shaft doesent spin. it will move a little and then stop.

2004SSS

iTrader: (25)

well i figured it has an open diff so if i only jack up one tire it will spin. i did the test and it spun 2x and the driveshaft spun just over 6 times so it looks like i have the 3.43's but i dont understand why my speedo would be so far off.

DuronClocker

iTrader: (25)

What size tires are on the car? Figure out what your speedo says at 2000RPMs in 6th.

2004SSS

iTrader: (25)

well i have hp tuners and it said i have 3.43 stock. but the tire size was 24.94 when i calculated a 275/40/17 i got a 25.70 . so if i have stock tire size than why would it have been so small? also are the stock 3.43 a lsd?

DuronClocker

iTrader: (25)

Yeah, it had a limited slip from the factory, and with 21k miles, unless the car had the **** beaten out of it and there's noise from the back, then I'm sure it is still in working order (well...as "working order" as a stock limited slip can be).

2004SSS

iTrader: (25)

thats weird. when i spin the tires when its off the ground it shoudl spin the driveshaft them ? and it didnt im wondeirng if somethign is busted?

Revelation Z28

iTrader: (10)

turn the driveshaft not the wheels. if one spins foward and 1 reverse then you have the torsen posi.