gears gears gears

Reply Subscribe

Thread Tools

Search this Thread

Aug 29, 2004 | 08:44 PM

bunnycop

Thread Starter

Senior User

Joined: Jan 2004

Posts: 102

Likes: 0

gears gears gears

37" tires,2003 7.3 PSD,4" exhaust, tymar intake,diablo predator,,now which gears do i need to make it get up and go?????? i have 3.73s(stock) now and it seems kinda sluggish...

Aug 29, 2004 | 09:52 PM

99f350sd

Lead Driver

Joined: May 2003

Posts: 9,303

Likes: 48

From: Lyndonville, Vermont

Those are big tires I would say the 4.56's

Aug 29, 2004 | 09:59 PM

joe blow

Logistics Pro

Joined: May 2004

Posts: 3,615

Likes: 878

I have a similiar setup. '04 F250 6.0 PSD with 37's on 17's. I regeared to 4.56's. I raised my RPM range by approximately 500 RPM. It rarely searches for the passing gear. The truck motors right along in overdrive everywhere I go and if I really stomp it, it goes into passing gear. I personally think it is a "tad" too low for daily driving. I am planning to go with 39's once these 37's wear out, which should put me @ the RPM I want to be. LONG STORY SHORT.......................4.56's are a good choice, ESPECIALLY if you want to tow ANYTHING!!!!!! Just my opinion.

Aug 29, 2004 | 10:55 PM

SoCalDesertRider

Postmaster

Joined: Dec 2002

Posts: 3,959

Likes: 9

From: USA

I third the recommendation for 4.56's.

Aug 30, 2004 | 04:27 AM

569104

Senior User

Joined: Mar 2004

Posts: 322

Likes: 0

From: Mountains of NE CA

And I fourth the recommendation of 4.56's....and while your in there how about a selectable locker or stronger limited slip.

Aug 30, 2004 | 08:08 AM

bunnycop

Thread Starter

Senior User

Joined: Jan 2004

Posts: 102

Likes: 0

thanks for the input, i wasnt sure if 456's would give me too much torque..thanks again...

Aug 30, 2004 | 06:24 PM

DCSpecial

Post Fiend

Joined: Dec 2002

Posts: 6,245

Likes: 1

From: IL, USA

I'll be a little different and recommend 4.10-4.30s with the 7.3 PSD. 4.30s would be close to the same effective gear ratio with 37s at a stock truck with 31.6" tires and 3.73s would be.

Reply Subscribe

Reply Share

First
Prev
1 / 1
Next
Last

Forum Jump