gear ratio

Reply Subscribe

Thread Tools

Search this Thread

Mar 18, 2006 | 12:02 PM

90Superduty

Thread Starter

New User

Joined: Feb 2006

Posts: 13

Likes: 0

gear ratio

hi guys, another newbie with a gear question. i have a 90 model superduty with a z5 trans,7.3idi,& this is off the tag on the rear end,5.13 E9TA PA 605400-2. any idea what i have? thanks for any reply.

Mar 18, 2006 | 01:41 PM

ltfox

Fleet Mechanic

Joined: Oct 2003

Posts: 1,764

Likes: 0

From: CentralEastern Utah

5:13 rears.......

Mar 18, 2006 | 03:21 PM

90Superduty

Thread Starter

New User

Joined: Feb 2006

Posts: 13

Likes: 0

Thanks Itfox, for the reply, do you know any more info such as, 9in, 10.25 etc

Mar 18, 2006 | 03:40 PM

JMac444

Senior User

Joined: Aug 2005

Posts: 235

Likes: 0

Prob 10.25, damn that thing cant go that fast with 5.13 but i can just image the power on low or first gear lol.

Mar 18, 2006 | 03:47 PM

90Superduty

Thread Starter

New User

Joined: Feb 2006

Posts: 13

Likes: 0

only 78 mph at full throttle. 3500 rpms

Mar 18, 2006 | 03:51 PM

90Superduty

Thread Starter

New User

Joined: Feb 2006

Posts: 13

Likes: 0

thinking of changing gears. maybe around 410,456, I really dont know. Anyone have any ideas?

Mar 18, 2006 | 06:46 PM

Dave Sponaugle

Post Fiend

Joined: Nov 2003

Posts: 21,285

Likes: 16

From: Nutter Fort, WV

What do you use the truck for?

This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Verdad Gallardo

Top 10 Fords at 2026 Carlisle Ford Nationals

Joe Kucinski

3 Best / 3 Worst Parts of Modern Ford Ownership

Brett Foote

10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

Pouria Savadkouei

Every 2026 Ford Engine Explained

Brett Foote

10 Ugly Ford Trucks That We Still Kinda Love

Joe Kucinski

10 Things Every Truck Owner NEEDS (2026 Edition)

Michael S. Palmer

Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Verdad Gallardo

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Joe Kucinski

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Brett Foote

Mar 19, 2006 | 09:04 AM

90Superduty

Thread Starter

New User

Joined: Feb 2006

Posts: 13

Likes: 0

Hey Dave, thanks for the reply. I just use the truck mostly on weekends, I have a work truck for everyday. I may use it to pull a 16 ft. trailer once or twice a month to haul two or three ATV's.

Mar 19, 2006 | 09:11 AM

#10

90Superduty

Thread Starter

New User

Joined: Feb 2006

Posts: 13

Likes: 0

Hey cookie88,This thing does have dual rear wheels with 10 hole lugs, & 14,500 gvw. Do I need to look for more tags on the rear end, to find out what it is?

Mar 19, 2006 | 10:06 AM

#11

84deisel

here sometimes

Joined: Mar 2003

Posts: 374

Likes: 8

From: Algona ,IOWA

dana 80 is what they used in the fsuperduty.

Mar 19, 2006 | 10:59 AM

#12

90Superduty

Thread Starter

New User

Joined: Feb 2006

Posts: 13

Likes: 0

thanks 84, thats what I was wanting to know.I guess I didnt ask the right question. Sorry. Any ideas on what gear to change to to get a hiway speed with a lot less rpm,s?

Mar 19, 2006 | 11:09 AM

#13

roamer37

Senior User

Joined: Dec 2003

Posts: 221

Likes: 0

From: Grosse Ile Mi.

jack up your truck one rear wheel have someone count the turns on the drive shaft while you turn the wheel 20 turns if it is a 5.13 the driveshaft will turn 53 times

Mar 19, 2006 | 11:22 AM

#14

cookie88

FTE Leadership Emeritus

Joined: May 2001

Posts: 13,653

Likes: 6

From: Cabot, Arkansas

Quote:

Originally Posted by 90Superduty

thanks 84, thats what I was wanting to know.I guess I didnt ask the right question. Sorry. Any ideas on what gear to change to to get a hiway speed with a lot less rpm,s?

I don't know what gears are available for the D80, but the 4.10 or 4.56's you mentioned earlier will give you more top end at a lower RPM. You wold be sacrificing some low end grunt, but no more than you work the truck you won't miss it.

Last edited by cookie88; Mar 19, 2006 at 11:25 AM.