Stock Mighty Max Transmission gear ratios

Mad Menace · Post by **Mad Menace** » Fri Oct 29, 2010 7:52 pm

Hi all, as we know I built a pretty mean Mighty max here over the last year, and recently have uncovered new stuff to play with as I installed the newest MS of them all the MS3.
The newest firmware release for the MS3 was released today, and it has new settings for vehicle weight, gear ratios and so forth and I cant seem to find this stuff anywhere so I figured I would ask here.
1. what are the gear ratios for the stock mighty max tranny's? I need all 5 if I can get them.
2. what is the stock rear end gear ratio? I do believe its somewhere around a 3.73 or 3.83:1

Verdad · Post by **Verdad** » Sat Oct 30, 2010 2:18 am

http://www.projectzerog.com/transmissions.shtml

then i googled "mighty max rear end ratios"

got this,
Check the tag on the rear cover of the differential. All the Mighty Max's left the factory with it, but if it's missing, check the trim tag that's attached to the firewall in the engine compartment. The rear axle ratio is stated where it says "Transaxle"

then went to the garage to check info...

R5M21 3909 on the tag. which means in my truck i have the 3.909 ratio rear.

im not busting your balls but as this forum typically moves slowly, its prolly best to do as much as possible on your own 1st

good luck man

ps where are the vids you promised in your build

Mad Menace · Post by **Mad Menace** » Sat Oct 30, 2010 10:46 am

Lol, I have no camera man, just a complete 1 man show... unless POV works for you from the dash or the back of the seat. I guess I could go out in the country somewhere and set up the camera on the road side and make a run for it

or both... I will do my best to attempt to get some videos up this week for you all

dude I have no idea where you got that info and I googled stuff all day looking for it

77amc · Post by **77amc** » Sat Oct 30, 2010 10:58 am

How are the C O P's working out?
I'd like to do that also but hate wiring and to add more is senseless to me without some support.

E

Mad Menace · Post by **Mad Menace** » Sat Oct 30, 2010 11:10 am

Man after I got the AEM C2DI box them COP's are doing me great... I can run clear up and over 20 psi boost... then the clutch lets go...lol

I could really use some bigger injectors now too

lsr mike · Post by **lsr mike** » Sun Oct 31, 2010 9:50 am

MPH Calculator
mph = rpm x tire diameter / differential gear ratio x 336/ transmission gear ratio
Differential 3.909
1st Gear 3.74
2nd Gear 2.136
3rd Gear 1.36
4th Gear 1
5th Gear 0.856

R5M21-GDL Tranny

Mad Menace · Post by **Mad Menace** » Sun Oct 31, 2010 1:40 pm

Lol, more like Horse Power Calculator

Megasquirt 3 and MLV have the capability to log a "relative" horsepower... but it says on my e85 data log that I hit 1349 horse power in 4th gear when the clutch came loose, but I somehow doubt its that high in actuality