Perfect gears for turbo M6 setup

Reply Subscribe

Thread Tools

Search this Thread

Dec 23, 2012 | 08:23 PM

ChrisUlrich

Thread Starter

TECH Regular

Joined: May 2005

Posts: 485

Likes: 0

Perfect gears for turbo M6 setup

3.08s or 3.23s? Car is a 383 with twin t60s.

Currently the car has a Moser 12 bolt with an eaton carrier and 4.11s. So I am thinking the 4.11s gotta go, no?

Dec 23, 2012 | 08:29 PM

Anchor

TECH Apprentice

Joined: Mar 2012

Posts: 303

Likes: 0

From: Aus

What carrier do you have? If it's a 4 series, tallest you can go is 3.7's.. A lot of supercharged/turbo factory M6 cars here in aus come with 3.7's standard. It's what i've gone with from 4.11's.

If you have a 3 series, i'd lean towards 3.5's. Too high and 6th will be useless unless you're doing some Bonneville passes..

Dec 23, 2012 | 09:45 PM

Packy

10 Second Club

iTrader: (11)

Joined: Apr 2003

Posts: 1,151

Likes: 0

From: Surf City, NC

I would say 3.73's will work for you.

Dec 24, 2012 | 10:39 AM

30th t/a

TECH Junkie

iTrader: (51)

Joined: Feb 2003

Posts: 3,172

Likes: 26

From: Butler, PA

3.42s + 6 speed = perfect for turbo setup. I wouldnt go any higher that 3.42s

Dec 24, 2012 | 10:48 AM

ChrisUlrich

Thread Starter

TECH Regular

Joined: May 2005

Posts: 485

Likes: 0

Thanks for input everyone! I love the ideas and suggestions!

Dec 24, 2012 | 11:18 AM

67Firebird455

12 Second Club

iTrader: (27)

Joined: Sep 2004

Posts: 2,552

Likes: 12

From: Visalia, California

I agree... Had 4.10's in my M6 TA and it wouldn't hardly build boost until 3rd gear. The fact that you've got twins and a 383 will definitely help! I'd find out what carrier for sure, then shoot for mid 3 gearing.

Dec 24, 2012 | 11:28 AM

got-a-ls1

TECH Fanatic

iTrader: (12)

Joined: Jun 2007

Posts: 1,438

Likes: 0

From: earth

i loved the 3.23 when i had the ten bolt. with the dana60 i could only go 3.54 and i like that as well. 3.23s would just pull forever though haha

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Verdad Gallardo

6 Common C5 Corvette Failures and What's Involved In Repairing Them

Pouria Savadkouei

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Verdad Gallardo

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Pouria Savadkouei

Top 10 Most Powerful Chevy Trucks Ever Made!

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Verdad Gallardo

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Verdad Gallardo

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Verdad Gallardo

10 Camaros You Should Never Buy

10 LS Engine Myths That Refuse to Die

Verdad Gallardo

Dec 24, 2012 | 11:50 AM

ChrisUlrich

Thread Starter

TECH Regular

Joined: May 2005

Posts: 485

Likes: 0

Mid 140 in 4th? I never do 140 in 4th gear, ever! Although, I did spin to 6000. haha

Dec 24, 2012 | 12:08 PM

#10

stevieturbo

9 Second Club

Joined: Nov 2003

Posts: 13,616

Likes: 185

From: Norn Iron

A lot will depend on traction available, tyre size, and usage, and of course how much power/torque you're making trying to defeat that traction.

At a guess though, I wouldnt want anything numerically higher than say a 3.5 for a twin turbo setup, which at present with your 4.11 probably smokes the tyres with ease in 1-4 gears, and maybe even 5th.