3.73 or 3.55? rears going to be an 8.8

 

add a little more info. like cam, turbo size and of course what is the car being built for.

 

You would want to stay in gear longer when using turbo.

 

8.8 + M6 + turbo = 3.55

 

yeah its either going to be a 70 mm or a 76mm turbo. the 76 will let me run a few less psi and have the same power. for now it will be a stock bottom end not more then 8-10psi. car is a 2002 camaro ss 6 speed. will be a street warrior with an occasional drag strip venture. havent decided on a boost cam or an ls6 cam yet.....

 

Regardless of what cam, how much boost, what turbo and blah, blah, blah.....with your t56 you would still want to run the 3.55, unless you want to shift all the way to 6th gear when you're at a 1/4mi dragstrip, unless you have a 12,000rpm capable stock shortblock then you might just need 3 gears to row.

 

I am running a 3.27 gear but I will be shooting for 800ish hp and only have room for a 26" tire.

 

3.70's with a 28" tire and a 6400 limiter = approx 145 in fourth

figure out how fast you wanna be able to trap in fourth, what size tire your running, and proposed rpm limit and select the gears accordingly

 

I was going to say this exact same thing. I just figured out how fast I wanted to go, and added 5 to that number, and figured out which gear I needed. And in my case, it was the 3.70 gear.

 

i would ask what is the car being use for? and what cam ? if its mostly a street car with a large cam then the higher ratios will make it fun to drive, but if its a track car then you differently want the lower ratios

 

3.55's probably will be my best bet i can stretch it out at the track and stretch it on the highway, when im cruising it will be nice too.

 

Im going to be running 3.55s with a 28" tall tire. Plenty of room to grow :p

 

3.55 for sure dont worry about the track stuff. if you want something fast at the track than go auto, but for playing around on the street 3.55 will be great. i had 3.42s when my car was a stick. tons of fun

 

What about a ls1 m6 on 4.11 with a 28 tire .turbo with pt88 is that a good setup ?

 

I'm still not used to people calling a 6 speed an "M6" so i'm thinking he's got a turbo BMW with an LS swap. Smh

 

Running 3.73 currently but a 3.55 would be ideal, best of both worlds.

 

Surprised this isn't closed yet, but I used 2:73 and the M6. Car had amazing stamina in 3rd and 4th. Still using them with the Th400, car is solid in high gear 😎. This is with 26 inch tires, can't stand 28s on an F body.

 

Damn that's a high gear, 200 mph in 4th at 6K lol.

 

3.73 for the track sub 900hp, 3.55 for the street or 900+

 

Ditch that 4.11 and go with something taller.

Fixed it slightly.... I made the swap from 3.55 to 3.73 and love it. 700rw, 3000lbs raceweight. Car dropped about .12 seconds off the 60' with just the gear change and also does much better on the street when dig racing. I very rarely roll race but I can still drag 4th out to 160 or so.