brianfromhawaii

iTrader: (3)

I have a 400 wheel horsepower camaro (confirmed today... woop!) without spray too...

anyhow, I want to pull a bit harder, what gears should I gear? Stock 3.42 right now, I can get my hands on some 3.73's or 4.10's pretty cheap with an install kit.... suggestions anyone?

brianfromhawaii

iTrader: (3)

also - anyone know some good calculators so i can see at what rpm = what mph?

conan

iTrader: (5)

4.10's are probly the most favorite here. When I get my 12 bolt I'm going to get 3.73's. I like the way the car drives with the 3.42's now so I don't want to change it much. This car is a street car not a track car so I'm not looking to cruise down the high way and have the rpms up very high.
https://ls1tech.com/forums/gears-axl...ere-first.html

Z28/2002

iTrader: (27)

4.10s

amsoilguy

iTrader: (1)

4.10s with M6. no doubt! I'm 400hp with m6 and 4.10s perfect setup for me. great on the highway in 6th. I needed the gears for the cam so its like a new car to me. I have the the 10bolt housing and I would NOT go this route. I had no choice at the time so i had to do it. I hit 3rd and pinion turned to a powder. lol. my car is a dd so it had to go back on the road quick.

KENS_SS_4

I cruise in my car all the time. I wouldn't have anything but the quiet of my stock 3.42's.

spaz1

iTrader: (9)

4.10's aren't noisey if they are set up properly.

flintwrench69

iTrader: (11)

I got 3.73s, what was in mine when I bought it so I dont know what the 3.42s are like. At 80 in 6th I am at 1800 rpms. 4.10s seem to be the favored gear upgrade for an M6 car, I do like my 3.73s though.

tj1986c

iTrader: (1)

I plan on going with 4.10s myself.

99345hp

i had 4.10s in my rearend before it blew up. I got better gas mileage with them than i do with the 3.42s. I have heard of people with 12 bolts going with 4.56 gears with good results.

Martin HD-28

iTrader: (16)

Which is going to read lower on a dyno, 3.73's or 4.10's?

01ssreda4

iTrader: (96)

i agree, 4.10s is one of the most liked gears for the M6.

TurdsOfMayhem

iTrader: (4)

I have always been told by many shops 4:10's in a stock rear equals bad news bears. I had experience with 3:73's when I had a formula, and I liked them. (it was an M6) 2nd gear and 3rd seemed to pulled much harder, 1st was still kinda a dud though. lol

madmike9396

iTrader: (29)

Im going 4.56

4WOFURY

iTrader: (2)

I have 4.10s in my 7.5" 10 bolt with no problem. I'm pushing ~430hp, and have given it some hell with a couple launches and clutch dumps, but I don't make a habit of it. I shift it hard when WOT.

My tires are 295/18 gsd3s, so they have some decent grip, but they aren't drag tires by any means.

Holding up fine, no noise.

silverM6TA

iTrader: (5)

your a lucky man.

WS6R6

iTrader: (1)

Happy Medium. 3.90's! But really if it's only between the two I would go with the 4.10's depending on your driving habits and what you are looking to get out of the gears!

Scoggin Dickey

iTrader: (34)

Sounds like you have 3.42s.

deelong4002

iTrader: (8)

I was going to say the same thing.

LS1Formulation

iTrader: (13)

If you have a ten bolt with 400 RWHP and you go to the track, it's going to break. With that said, I have found through trial and error that 4.10's break more often than 3.90s. The pinion is a bit larger on a 3.90 so the tooth contact area is stronger. When I get my S60 in a month or so, I am going with 4.10s again because it can handle it.