LS1Formulation

iTrader: (13)

I am considering removing my 4.10's and sticking in a set of 3.73's to soften the blow my rearend receives on launch. I never had a problem breaking gears until I installed them. I think the larger pinion gear and increased tooth contact will help the gears last longer. I know the ideal thing would be to install a 9" but it's not in the budget right now. My present gears are chewed to **** from exploding an auburn posi last summer, so they need to be replaced anyway, so would this be a good idea? I might add... I am installing a TR224 cam, FAST 78 intake, ported TB and LTs/ORY before the season starts, so my rear is going to be even more likely to break. I just want to know if I should stay with 4.10's or not. Opinions?

BriancWS6

iTrader: (18)

There's no way I would swap to 3.73s after having 4.10s, especially if your gonna have a cam. I have been running Motives for a while and they have taken some beatings. The weak link I have found so far has been the posi. I exploded it on the 1-2 shift. What brand gears have you been running?

keliente

iTrader: (22)

Might as well leave them in...going to 3.73 is not going to be a magical saviour of the 10 bolt. If it's going to break it's going to break.

LS1Formulation

iTrader: (13)

Ha ha... well, that may be my problem too - been running cheapo $140 gearsets from the Auto Value store down from my house. I figured I wouldn't feel too bad breaking them if they were cheaper. Guess maybe I should try a set of good gears once and see what happens. Maybe stay away from the track until I get a rear in the car, lol.

Ragtop 99

iTrader: (7)

The combination of cryo and mikronite on the 4.10s might help them survive, but the posi and axles still will grenade if you start with big clutch dumps.

sidewayz28

iTrader: (24)

where can you get gears "cryo and mikronited"?

prplhaz

A couple of sponsors, Crane Cams and Vinci, can Mikronite for you (Crane was just bought by Mikronite).

sidewayz28

iTrader: (24)

how much does it cost?

LS1Formulation

iTrader: (13)

I've actually decided to go with 3.90's now for the time being. I only dump the clutch between 2500-3000 so it should be able to handle it. I'm going to avoid the track as much as I can until I get a better rearend in it.