M35A2 speed boost

[GUNGIY]

I was wondering what the best way to get little more speed, little less RPMs on a Duse and a half is any suggestions?

 

[gimpyrobb]

Bigger tires.

 

[avengeusa]

Bigger tires.

agreed

 

[GUNGIY]

I was thinking mabby put a hire ratio the hi part of the hi/low differential

Eny thoughts?

 

[nk14zp]

That would work. where are you finding these gears?

 

[gimpyrobb]

Tom Baur(sp?) is making a higher(numericaly lower) 5th gear.

 

[unclemikey]

taller tires..........or a cliff.

 

[BKubu]

Changing from 900 X 20s to 1100s will allow you to run at 57 MPH at the same RPM you would be turning at 50 MPH with the 900s (this has not been mathematically derived...figured it out from a chase car clocking me).

 

[blackdiesel]

i cant believe someone hasnt made a set of 4.56's or 4.10's for the axles. Or even a set of 5.13's. anything would be better than 6.72's

 

[drgreg]

Dropping some weight may help some.

 

[dmetalmiki]

well heres a way 1200x20s keeps up with the civy trucks easy. better steering and turn circle. im going to fit 1400x20 will post pictures and results soon

 

[tm america]

bigger tires is the easiest way going with singles will help accel to less rotating weight

 

[JasonS]

Somebody here on SS claimed to have drawings from rockwell for a higher speed gear set but he never got back to me.

 

[Floridianson]

I was wondering what the best way to get little more speed, little less RPMs on a Duse and a half is any suggestions?

I heard they go faster if you spell there name right.

 

[grounded]

Ouverson Engineering is working on making a set of 4.?? gears. but they are going to be pricey for this hobby i bet. its mostly for them rock crawler guys

 

[quarkz]

Sounds good.
But, don't the rock crawler guys want the ratio to go the other way, toward 7.17, like my school bus?
4.?? would be for the speed freaks, even if they were a bit pricey.
The bus has a Rockwell axle.
I was always looking for a 4.56 set for the bus so I could get over 60mph.
I rode the 7.17s all the way from Virginia to Washington state when I moved out west.

 

[snakeater]

Heres a speed calculator for you folks wondering. Input rpm, gears and reduction for overdrive, as well as tire diameter and voil'a speed. Snakeater

http://www.angelfire.com/fl/procrastination/rear.html

 

[blackdiesel]

looks like a set of 4.56's and a set of 46" tires would be ideal. You'd lose quite a bit on the bottom end though, so it might be better with a set of 5.13's

 

[gimpyrobb]

Are you talking ring and pinion? Thats just dumb. Why replace 3 sets when you can get 1 gear from Tom? His kit also addresses the weak second gear issue in the trans.

 

[HeadWizard]

i cant believe someone hasnt made a set of 4.56's or 4.10's for the axles. Or even a set of 5.13's. anything would be better than 6.72's

Would work, but to re-gear 3 diff's would be more than the truck is worth.