4.10's and twin screw

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04-09-2009, 12:30 AM

Big50

2nd Gear Member

Thread Starter

Join Date: Aug 2008

Location: CA

Posts: 479

4.10's and twin screw

I am having a saleen put in this coming week and i am wondering what i should do about the 4.10's i have in there right now. I want to know if they will be helpfull at the track. I have some mt dr's right now. I know for the street the 4.10's will prevent me from launching with any traction. But, that really doesn't bother me because i don't street race at all. My job requires me to have a liscense, so i can't risk loosing it. Anyhow, should i see how the car performs with them. Or, am i just waisting my time and have them swapped back to my old 3.55's while the cars in the shop?

04-09-2009, 06:27 AM

moosestang

6th Gear Member

Join Date: Sep 2006

Location: Gainesville, FL

Posts: 11,278

I can't get any traction in 1st at the track, but I think I need to adjust my UCA. I tried launching at 3k and 5k and both times spun most of first gear. That's with 275/50/17 drag radials at 16.5psi. I gave up after the second run.

there's no since pulling them out right now. You can change gears anytime. I know it's possible to use 4.10's and a twin screw. You just need to setup the suspension correctly.

04-09-2009, 09:39 AM

Big50

2nd Gear Member

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Join Date: Aug 2008

Location: CA

Posts: 479

Quote:

Originally Posted by moosestang

i planned on trying them out. i read a couple threads that said 1st would be useless. but i was thinking it is the same kind of problem i would be having if i had upped the boost and trying to launch with more torque. i may be wrong, but it seems logical

Last edited by Big50; 04-09-2009 at 09:41 AM.

04-09-2009, 09:58 AM

aclass

3rd Gear Member

Join Date: Jan 2007

Location: Blue Ridge Mtns, VA

Posts: 524

I've never driven a F/I car with 4:10 but my car has the 3:55 and 1st gear is useless. Personally I'm glad I dont have 4:10 with my s/c but my car is a DD.

04-09-2009, 10:14 AM

Riptide

6th Gear Member

Join Date: Nov 2007

Location: Montaner

Posts: 6,193

Has anyone with 4.10 and a twin screw actually gone BACK to a taller gear?

04-09-2009, 10:34 AM

mustanglouie

2nd Gear Member

Join Date: Nov 2007

Location: Gainesville GA

Posts: 329

I have 4.10's and a twin screw and I love my combo. I have fun with my setup. If I was taking it to the track all the time then I guess I would want a taller gear. I love all that pull at lower rpms.