4.10 or 3.42
know that the 4.10 will kill more power if you dont have ur rim/tires matched ... research your best choice on ls1tech ... in the end ur drivin the car.
4.10 best for drag
373z best @ street
i say don't kill the motor with 4.10z ..... on your dd + get better adviced on how to install .... many folks around here get em 4.10z breakin(eaten up) BECOZ installation waz wrong PERIOD !!
I had 4.10s in my car for the last year and absolutely love them however that POS rear end GM put in our cars does not like that gear. You will shred the teeth off,break the carrier or break an axle eventually!
3.73s are more forgiving and will last a bit longer but will eventually give you problems in the same manner as described above......
Auto cars are not as hard on the little ol 10-bolt so you will get away with either gear for quite awhile...
Personally,i would and have gotten a rear that will not break as easy. Its worth the investment.
Bolt ons only - 4.10s
Bolt ons + nitrous - 3.73
But dont expect anything to last too long, i broke an axle and my 4.10s have whined since a week after they broke in. Now after replacing axles and bearing twice Im upgrading rear ends.




