hey i have a 89 camaro rs 5 speed with a 305 tbi and posi rear end and i believe my axle gear is stripping. it winds up and its a 3.08 gear. i would like to get a 3.72 or something how do i know which one to get and where?? thank you

 

I'm not sure what "stripping" means and there's no such rascal as a 3.72. If you have a 10-bolt, check the sticky at the top of the page for info that may be helpful.

JamesC

 

Lots of sources for 3.73:1 gears, but like James, I'm curious about this "stripping" thing, please post a pic as soon as you pop the rear cover. Also, if the 3.08:1 gears aren't damaged, you might have a buyer if the price is right.

 

i dont know the axle winds up it has this whining noise when you drive it and since this is my first car i dont really know whats going on. i know it has posi and it has a 3.08 gear in it and its a tractor when you drive it and i wanted a shorter gear but not in the 4.00's. am i just better off to buy an axle or just get the gear?? i dont want to get my license and the next day that axle gives out haha

 

okay i see it now its a 3.73 i knew it was something in there but would i still be better off getting a used axle or just replacing the gear?? thank you

 

Replacing the entire rear end with the ratio and brakes that you want is cheaper and less labor intensive (a shop would need to set-up the gears). Finding an OE 3.73 rear might prove difficult. 3.23's or 3.42's would be common enough.

JamesC

 

copy that and would a 3.42 be in a v6 rear end?? and id imagine pulling out a rear end is a days work at a junk yard lol

 

You can use tech articles on front page for ea year and see what models came with what ratio

 

You might be amazed:

I bet the guys at the yard can yank it out of there faster than you can walk back out and grab your wallet you forgot and left in your car.

I can swap one, laying on the floor in my garage, in less than 2 hours, drive-in to drive-out. You're probably quicker than me, so it shouldn't take you even that short of a time.

As "major component" swaps go in these cars, that one is pretty much the easiest.

 

okay cool thanks you guys!!

 

Check stick cars since they usually got a decent gear and 88-89 350 and 305 cars got 9 bolts which are better. The 305 stick tpi cars got a 345 gear and in 89 you got the 11.7 inch rear disc with pbr calipers which is the same rear brakes that the corvette got. You can get a 370 gear and 410 gear for the 9 bolt on www.9bolt.com an 370 gear from randys ring and pinion. 10 bolts are 7.5 ring gear and 9 bolts are 7 3/4. It's pitiful that from 89-92 the rear disc brakes were 11.7 and the front was 10.5. Somebody goofed.

 

No, avoid stick cars. The abuse of clutch-dump launches at 5000 RPM does kill the crush-sleeve, which hurts the ring & pinion. Plus the shock loading stresses, fatigues and weakens the gears and everything else. If you're going with used gears, only use gears that have always lived behind an automatic. L69 cars could have 3.73:1 with the auto, but those were only 7.5" 26-spline. The '90-'92 V6 / auto cars had 28-spline, and were 7.625" 3.42:1 Besides 85% of all third-gens were automatic to start with. Best to get the right axle, then worry about swapping brakes. Far cheaper and easier than messing with gears, far easier than torquing a new crush-sleeve correctly.

 

ill start looking around here for 4th gen axles. i love the look of back tires sticking out more so ill go with that. also sorry if this is a dumb question but if i got a non posi rear can i put my posi on it?? that whole thing is confusing to me. i have to have posi...one wheel burnouts wont work for me lol

 

Yes you can either have a shop put it in , or try it yourself

http://www.nastyz28.com/forum/showth...t=install+posi