I am contemplating while my transmission is being built, to swap over to the 4.11 final drive

Looking for experience. Not I read on the interwebz bulls#it. Will be evo 9 1st and 5th gears. 2,3,4 evo 8.
255/40/17
I have searched. I have made a few calls. Looking for pure experience.

Any replies please list mods please.

It would be great to see before and after dyno graphs.

Thanks in advance

 

why not just stick with what's been proven? there probably a reason why you don't see a lot of people running 4.11 final drive?

are you some sort of idiot?

 

Buschur used the 4.11 on project White, so If you have a big motor, dont want to rev it out and are planning to run more than 138mph in the 1/4 then get it

YAY 1000 postsss lol sorry for the outburst...

 

Thanks for all of the invaluable input folks. MODS: please sticky!

 

If your 2.3 and your rev limiter is 8500rpm then the 4.11 if perfect. If your a 2.0 don't waste your time with it because it takes alot to move those gears.

 

The 4.11 is a bad idea for most. Dave choose the 4.11 for auto cross reasons. car would spin too much on tight course in first and second with shorter gears. In a straight line car will be quicker with 4.53 in. and even quicker yet with 4.85 which no one seems to consider. The 4.11 does not make car quicker. Its good maybe if you want very low RPM on highway. or want to hit 200mph. otherwise you will be killing some acceleration. I bet 1000$ daves project white would have ET'd lower and trapped higher with 4.53 and shifting to fifth.

I made a thread on this years ago. It might be a good read for you.
https://www.evolutionm.net/forums/dr...shift-5th.html

 

Thank you guys.
I will read that thread.

 

Definitely a good read.
The first page. And I do agree.
I really wanted to see dyno graphs. With a large turbo, the power may be more linear. Meaning more actual time in peak powerband. May also slightly increase spool up. Because it would be more difficult to turn, creating more heat, therefore, aiding spool. But, that is speculation with out facts and logs. And that is exactly what I want to see. I could be completely wrong. But no one can flame with out facts.
My personal opinion is, with out loss of traction, there is no need for it.

Either way, thank you Sharkbite and 94awdcoupe, as I respect your opinions on this board by reading your posts throughout the years

 

A dyno graph showing the difference would be much like seeing a car dyno in both 3rd and 4th. There are a few of those posted. Except the effect would be smaller. 4th gear graphs do show the turbo spooling earlier just like you would see on the street.

If you have a setup that has trouble making full boost in lower gears, then moving to a gearset or rear end that loads more would make car faster. But hopefully you arent planning to run such a boring turbo.

 

Absolutely not sir. Mods in my sig.
Just looking.
However I would like to see it. Back to back. Looks like I will not.
Everything that has been posted I have already had thought and researched. Its just that sometimes what seemingly works, or does not on paper may work in reality.
Its okay though, because I am listening to Killswitch Engage.
I have read of other gearing as well. Lower and higher.
I should search for results with different sized (OD) tires.

 

I agree on the et quicker. but im thinking the mph would go down and that kinda proven with the smaller tire. No???

 

when you see a car go quicker at lower mph it means the 60ft was lower. changing gear ratio would have little effect on 60ft.

 

what gears is the BADBISH running?

seems like he's trapping 155+ mph in 4th gear

 

I thought that if you have a 4.11 or say 4.56 that you will get off the line quicker, I am thinking about old muscle cars and doing the gear change in the rear end, so how would a 4.11 gear in the tranny make my car go 200 mph

so if I want a better off the line gear what do I choose?

 

Josh a 4.56 FD will have more acceleration than a 4.11 traction being equal.

Shifting into 5th will kill ET's due to the fact that the car does actually decrease it's velocity during a shift due to drag @ 120+mph. So if you're going for ET you need to find the FD/gear/tire combination that will put you in the traps at the END of a gear (not the beginning)

You need to plot your acceleration with respect to engine speed/vehicle speed and account for drag. I have such an excel file I'll share with you Josh. It will plot out your shift points for given gear ratio's, FD's, and tire sizes. PM me with your email.