I HAVE A 305 5 SPEED WITH 3.08'S AND I AM LOOKING FOR A POSI TO CLOSE UP MY 7.5" 10 BOLT. ARE THERE ANY POSI'S THAT ARE BETTER THAN THE OTHERS? I WANT THE KIND THAT WIL GIVCE ME TWO TIRE MARK BURNOUTS INSTEAD OF ONE. I'M ALSO LOOKING AT 3.73'S AND 3.42'S. BUT HAVING TROUBLE FINDING INFO ON GAS MILAGE AND THE IMPROVEMENTS IN 1/4 TIMES. HELP?

First of all, don't YELL. For cheap, you could go with the SLP take-off posi. But you didn't post your year, make and model--so I'm not sure what it would take to intall it on your car. I like the powertrax locker in mine, it works well. Looking at your combo, I would go with 3.42's.

I just had an Auburn Posi rear installed w/ a set of Richmond 3.42 rear end gears in my 92 RS. Compared to the stock open rear & 2.73's I have not noticed any decrease in gas mileage, RPM's @ 2,250 - 2,300 when cruzing in OD @ 70 mph.

it is a 1990 camaro RS 305 TBI 5-speed

is the take off of a posi (that SLP makes) lock both axles together so that they both spin when i burnout or will it leave dashed marks? like it was transfering power form one wheel to the other trying to gain traction? i am looking at auburn gear's product. but i want something that will take some aftermarket improvements to the motor and maybe even a 350 later on. It also needs to stand up to reel hard launches using slicks. i juss want something reliable that people have had good experiences with

how does your posi run with the 3.42's is there a reel difference in your launch or take off from the light? i think that i am going to go with 3 73 's about 90 percent sure but im still stumped on the posi side of things.

Noticed a huge difference, the car definitely feels a lot stronger. If I get on the gas hard from a dead stop, the rear will break loose

well what gear did u have stock? im guessing 2 73 but if u came up from a 2 73 i would get about the same difference in raqtio from coming up to a 3 73 from a 3 08 right? how does that posi run? what kind of experience are you ahving with it? is it reely nopisy?

posi is great, the rear does humm a little.

It shouldnt, are you sure the gear was setup correctly?

suppose to be common w/ Richmond gears, it is not a loud humm, I can barely even hear it.

Richmonds tend to hum a bit. Those dash marks are from wheel hop--common in thirdgen's. Especially if it's lowered. Only a locker locks the wheels together, limited slip(torsen, auburn, etc.) gives power to both wheels, but not 100 percent equal.

thanks guys