VIN Codes
Thread Starter
|
Junior User
Joined: Dec 2001
Posts: 59
Likes: 0
From: Houston USA
VIN Codes
OK folks. I have a tag on my rear end. Here is what it says:
S 141 E
L73 10 5 9J17
Anybody know what gears I have? I ran 70 at about 2100 or 2200 rpm this last weekend. I know it's a limited slip because I jacked up the rear end to check. If anyone knows what gears I have I would really like to know. I get about 9.5 and 13.5 mpg so I would like to justify that to my friends by having 4.30 gears. They all have PSD's. I am the black sheep.
S 141 E
L73 10 5 9J17
Anybody know what gears I have? I ran 70 at about 2100 or 2200 rpm this last weekend. I know it's a limited slip because I jacked up the rear end to check. If anyone knows what gears I have I would really like to know. I get about 9.5 and 13.5 mpg so I would like to justify that to my friends by having 4.30 gears. They all have PSD's. I am the black sheep.
Sit. Stay.
Joined: Oct 2001
Posts: 18,308
Likes: 20
From: Washington State
VIN Codes
[updated:LAST EDITED ON 29-Dec-01 AT 11:18 PM (EST)]You have slushbox right, Mikeking? Man, I was gonna say that you have 3.73's. That's what I think but I can't remember what I pull at 70mph. It's too daggum late to go out & take a drive, so I'll find out in the morning and post it. I'm sure others will beat me to the punch, though. The first numbers of the code lead to believe that you have 3.73's. Are you sure that there isn't a 3 before that L??
Sit. Stay.
Joined: Oct 2001
Posts: 18,308
Likes: 20
From: Washington State
VIN Codes
[updated:LAST EDITED ON 30-Dec-01 AT 05:31 PM (EST)]Really NoMo? I went out today and drove 70mph and I am right at 2000rpm. Maybe just a tick above, say 2050. I've been searching through my house for the equation that will tell you mathmatically what your truck should be turning (rpm) at a given road speed. So far I can't find it.:-X23 Don't you hate when you need something and can't find it!? My tires are new (maybe 1K on 'em) and stock size and brand, too(Firestone Steeltex R4SII / buy 3 get one free! $340!!), 3.73's and an auto. Anyway, 200rpm seems like a big difference but maybe it isn't...Soooooo, Mikeking, you got 3.73's 
On another note, all you guys that have 2002 SD/Ex's I am so jealous! Those new lights look way
. I know they'll bolt right in too. Now what'd I do with that number to my Ford dealer...
On another note, all you guys that have 2002 SD/Ex's I am so jealous! Those new lights look way
. I know they'll bolt right in too. Now what'd I do with that number to my Ford dealer... 
Postmaster
Joined: Nov 2001
Posts: 4,742
Likes: 8
From: OK
VIN Codes
Through previous discussions, it seems that there can be significant differences between trucks & the RPMs they read. Throw in the "eyeball" factor and I think it's very possible to have a 200rpm difference.
Sit. Stay.
Joined: Oct 2001
Posts: 18,308
Likes: 20
From: Washington State
VIN Codes
Sounds good to me! The "eyeball factor" never heard that one! LOL
So what do you think the RPM difference is with 4.30's?
never heard that one! LOL So what do you think the RPM difference is with 4.30's?
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
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
Top 10 Ford Truck Tragedies
Joe Kucinski
Sit. Stay.
Joined: Oct 2001
Posts: 18,308
Likes: 20
From: Washington State
VIN Codes
[updated:LAST EDITED ON 30-Dec-01 AT 11:46 PM (EST)]To do the mathmatical calculation for RPM at a given road speed, here it is...
RPM=wheel revs per mile X rear axle ratio X Miles/minutes X transmission ratio.
Well...just go here
[link:suv.fordtraining.com/specs/suvpow/calcrpm.html|Revs per mile]
RPM=wheel revs per mile X rear axle ratio X Miles/minutes X transmission ratio.
Well...just go here
[link:suv.fordtraining.com/specs/suvpow/calcrpm.html|Revs per mile]
Thread
Thread Starter
Forum
Replies
Last Post
harvy
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
4
Apr 22, 2008 10:50 AM
taskdillon
1968-Present E-Series Van/Cutaway/Chassis
5
Feb 4, 2008 07:59 PM
Primered86XLT
1987 - 1996 F150 & Larger F-Series Trucks
2
Oct 29, 2003 06:05 PM
