273 to 373

[gasman]

I have a 1994 z28 I haze 273 gears in it now... I was wondering if its worth going to 373.... is it a do it yourself job.... or have a shop do it.... any particular brand to stay away from. ...

[BP_Z28]

Always worth getting away from 2.73s. Unless your a MPG nut. And if thats the case, you shouldn't be in a Z28

Sent from my C811 4G using Tapatalk

[gasman]

I agree

[jetice]

You have to change the carrier to go from a 2.73 to a 3.73. Not much difference time wise to do the swap, but it costs more.

[farmington]

Probably better off finding a complete 3.73 rear and swap rears. Would be cheaper.

[mcalus]

I wanted 373s. Ended up getting a used 10 bolt with 342s already in it. That's your best cost efficient way to go. Don't dump any more in that 10 bolt than needed.

[hoogiesngrinderz]

Agreed on the whole axle swap. Gears will cost around $175 give or take depending on brand, then you need to properly set them up. Not a job for a beginner unless you want to learn. I think it took me a whole day to properly set my first ring/pinion set since I didn't have a set of setup bearings.

Not sure if any 4th gen f-body came with 3.73's unless it was a SLP option

Generally - V6 cars came 3.23 or 3.42's. V8 cars had 2.73 or 3.23 behind auto, M6 cars had 3.42. I bought a V6 rear with 3.42 and swapped the aftermarket TrueTrac over

[nascarnate326]

Wish I had 3.42's. Maybe this year I can get mine rebuilt.

[c0ncEpT]

Look for a used axle. I traded my 3.73 gear'd axle for a factory 3.23 axle + $100

[gasman]

OK thanks I was hoping it was something I didn't have to save up for.... does anybody have a rear end there not using lol..... car rear end....... I have Sniper Preformance doing an ls1 swap so I wanna get the most outtta the swap....

[hoogiesngrinderz]

I do have a 98 rear housing with axles and brakes, did have 3.73 gears but they howled like a banshee. I have an open diff to toss in, but I doubt any enthusiast would want that

If you want the 3.73 gears, you can have them. I was going to scrap them, but maybe free will make you overlook the howl?

[gasman]

Thanks for the offer but if its "howling" then aren't the gears going bad....

[hoogiesngrinderz]

I was kidding, but whoever wants them can take 'em. Not sure what brand they are, but the gears were set correctly yet the tooth contact areas didn't harden like they should have. My only guess is that the PO didn't break them in like he should have.

AAM gears are considered the best, from what I've read.

[scubasteve90]

If no one wants them, ill come get them. I have a spare axle I could throq them in.