Roots style supercharger with 4.10 gears

Reply Subscribe

Thread Tools

Search this Thread

01-28-2009, 09:47 PM

#11

POISND U

5th Gear Member

Join Date: Nov 2006

Location: So Cal

Posts: 3,569

I'm having a hard time reading your posts.

How much power are you putting down? You should be able to roast them with 3.27s at part throttle in first.

With 4.10s you will need AT LEAST MT or BFG DRs to hook on the street. Everyone here is saying 3.73s tops for a reason.

And you PEEL out....

01-28-2009, 09:50 PM

#12

justinschmidt1

4th Gear Member

Join Date: Aug 2007

Location: Delawere

Posts: 1,334

go with 3.73s...4.10s will be overkill and a half...even 3.73s are kinda big...3.55 would probably be perfect.

01-28-2009, 11:08 PM

#13

03svtcobra12

3rd Gear Member

Join Date: Dec 2008

Location: sc

Posts: 650

4.10+roots = useless first gear

01-28-2009, 11:09 PM

#14

Tim99GT

4th Gear Member

Join Date: Dec 2007

Location: Lafayette, LA

Posts: 1,700

4.10 is waaayyy too much gear for a roots s/c. i dont understang how you are not launching good with a blower??? what type of s/c do you have?? the max i would go is 3.73. i have 3.90 and i can roast my bfg dr's (315's by the way)when letting the clutch go at 3000-3500 rpm. don't put 4.10's honestly, you will hate yourself later. bc all it will lead to is you saying #$%^ and dong another gear install.

01-29-2009, 08:31 AM

#15

jRock617

2nd Gear Member

Join Date: Feb 2008

Location: Boston MA

Posts: 383

from what i've seen, a roots blower (positive dispalcement) works better with 3.73s, but a centri blower works well with 4.10s because you dont make all the boost when you press the pedal down. you will have no traction at all in 1st and 2nd gear with a twin screw and 4.10s.

01-29-2009, 12:23 PM

#16

justinschmidt1

4th Gear Member

Join Date: Aug 2007

Location: Delawere

Posts: 1,334

Quote:

Originally Posted by jRock617

even with 3.73s and a centri you will blow the tires off through 1st and second unless you have good tires...I do atleast.

With the stall its basically like having a roots blower now.

01-30-2009, 08:43 AM

#17

Eagle2000GT

4th Gear Member

Join Date: Aug 2007

Location: Shelbyville, Indiana

Posts: 1,088

Quote:

Originally Posted by foru2nv4

What I want to do is put bigger gears in because the launch sucks on take off from a light until the supercharger kicks in at about 2500 rpms. Very dissappointed with the take off and am wondering if 4.10 gears will fix that and its not an over kill.

Quote:

Originally Posted by foru2nv4

I am already reving the engine to 3200 rpms and let the clutch go just to get the take off and the car will slide side to side left and right due to the tires.

Quote:

Originally Posted by foru2nv4

I have to rev. the engine up to 3200 rpms to get it to pill out with 275X35XR18. IF I go with 4.10 gears I am thinking I don't have to rev the engine up and acheive the sam performance as if I had to rev the engine and pop the cluth.

Quote:

Originally Posted by foru2nv4

I might go with 35X305XR18 on the rear to help traction alittle bit more but I don't mine the left to right pill out from a light cuz it shows torque and power.

You seem to be under the misunderstanding that peeling out wins races. When you smoke the tires, your pretty much going nowhere fast. Even a stock GT will smoke the tires if the driver revs to 3200, dumps the clutch, and goes wide open throttle. You are already throwing too much power at the rear wheels. It doesn't matter that you are at peak boost around 2500 rpm with a twin-screw, its too much for the tires and you need to back off. Gears, whether 3.73s or 4.10s, will make your problem worse not better.

I'm sorry but with the way your launching a stock GT with a good driver could probably beat you. Try launching at 1800 and going half throttle until the tires start to grab then go WOT. You'll be much happier with the result.