4.10's ???

Reply Subscribe

Thread Tools

Search this Thread

Mar 10, 2004 | 10:59 AM

onefast99ss

Thread Starter

On The Tree

Joined: Jan 2004

Posts: 112

Likes: 0

4.10's ???

I wanna do 4.10's in my 99 M6. I just wanna know what RPM i would be cruisin on da highway at 70-75 in sixth gear. Let me know.

Mar 10, 2004 | 11:20 AM

Tranzor

TECH Veteran

Joined: Aug 2003

Posts: 4,954

Likes: 1

From: Kent WA

Roughly, about 2k rpms at 70, about 2.2k at 75...

Mar 10, 2004 | 12:36 PM

BlueSix

TECH Junkie

Joined: May 2003

Posts: 3,050

Likes: 0

From: its fucking cold

1900-2000 RPM's @ 70-75.

Mar 10, 2004 | 12:42 PM

onefast99ss

Thread Starter

On The Tree

Joined: Jan 2004

Posts: 112

Likes: 0

thanx, how big of difference do 4.10's make on your 1/4? are they worth getting or are there any downfalls to them??

Mar 10, 2004 | 01:20 PM

Tranzor

TECH Veteran

Joined: Aug 2003

Posts: 4,954

Likes: 1

From: Kent WA

Quote:

Originally Posted by onefast99ss

thanx, how big of difference do 4.10's make on your 1/4? are they worth getting or are there any downfalls to them??

They make a HUGE difference in the way the car feels and how it accelerates... much better in both regards. I'll have some 1/4 mile times the first week of April once the tracks open up again out here.

The biggest downfall is with the 10 bolt rear end... with sticky tires, a high RPM launch, and 4.10s you can grenade it. Also, wheel hop will kill the 10 bolt, especially with the smaller 4.10 gears... so you'll need to set up the suspension as best you can to eliminate wheel hop (things like LCAs and a new torque arm).