Gear ratio - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 13 (permalink) Old 09-28-2005, 12:14 AM Thread Starter
 
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Gear ratio

Hey guys, how can I find out what size gear is in my truck? And if its limited slip. Is there a site where I can cross reference the numbers from the sticker in the door jamb? My sticker shows an axle code of 31.

Thanks!
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post #2 of 13 (permalink) Old 09-28-2005, 12:17 AM
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the gar ratio is on the tag on the back cover. and if it's an LSD or not, if you have over 10k miles, you do not have an LSD, the stock ones are weak and don't hook for anything with a few miles on them.

07 Ram 2500 5.9l 48re QC SB Silver
98 BMW 540i 4.4l V8 6speed... 18in Stagered, Chrome Plated ///M5 Par's, Eibach Coils, Bilstein Shocks, 294/324 STOCK!
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post #3 of 13 (permalink) Old 09-28-2005, 12:28 AM Thread Starter
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Thanks, I'll go check the tag. If it is limited slip it doesnt work. I'm doing the one wheel peel all over town. Just turned 10k. I also heard that the only way to get LS in a 250 was if it was 4wd. Is this true?

Thanks Again.
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post #4 of 13 (permalink) Old 09-28-2005, 08:42 AM
 
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If you order the truck with limited slip you get limited slip. If the dealer ordered it they bought somethin cheap and marked up the price. 31 is 3.73 non limited slip.

The following lists the gear ratios on rear axles for 2004.

31 3.73 non-limited slip, F-250/Excursion
32 4.10 non-limited slip, F-250
41 3.73 non-limited slip, F-350
61 3.73 non-limited slip, F-350
73 4.30 non-limited slip, F-450
75 5.38 non-limited slip, F-450
78 4.88 non-limited slip, F-450
81 3.73 non-limited slip, F-350
88 4.88 non-limited slip, F-350
95 5.38 non-limited slip, F-550
98 4.88 non-limited slip, F-550
C1 3.73 limited slip, F-250/Excursion
C2 4.10 limited slip, F-250/Excursion
C3 4.30 limited slip, F-250/Excursion
D1 3.73 limited slip, F-350
D2 4.10 limited slip, F-350
D3 4.30 limited slip, F-350
E2 4.10 limited slip, F-350
E3 4.30 limited slip, F-350
EW 4.10 limited slip, F-350 (ambulance package)
F1 3.73 limited slip, F-350
F2 4.10 limited slip, F-350
F6 4.56 limited slip, F-350
G3 4.30 limited slip, F-450
G5 5.38 limited slip, F-450
G8 4.88 limited slip, F-450
GW 4.88 non-limited slip, F-450
K5 5.38 limited slip, F-550
K8 4.88 limited slip, F-550
KW 4.10 non-limited slip, F-550
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post #5 of 13 (permalink) Old 09-28-2005, 05:25 PM
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factory 4.88s would have been nice in the 250...

05 f350 crew cab long bed, 10.5" rize, deaver rears, bilstein 5150s front and back, 38x15.50x18 **** cepek mud countrys, 18x9.5 pro comp 1023s clearcoated, 4.56s, pml diff covers, rize ladder bars, rize dual stabilzer with bilsteins, adj. trac bar, amp reasearch steps, doug tuned sct, airaid with zoodad, 5" straight pipe, fluidampr, welded egr, shimmed regulator, isspros, viair 480c with nathan p3, husky mats, marathon seat covers, uws toolbox, uws 100 gallon transfer tank w/15gpm pump, uws dog box

01 f150 supercrew, 33" mud grapplers, stock, for sale $13,000

05 brute force 750, snorkeled, lifted, 29.5x12 outlaws front and back, black type 7s, intake, hmf pipe, moose, asr tie rods

06 raptor 700se, 734cc, 10.75:1, cammed, intake, ported/polished, yoshi pipe w/ fmf header, power commander, 15t front, yfz shocks, 20" holeshots, soon to be 770 stroker...
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post #6 of 13 (permalink) Old 09-28-2005, 05:38 PM
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factory 4.88s would have been nice in the 250...
but not practical unless you were throwin big tires under it
post #7 of 13 (permalink) Old 09-28-2005, 05:43 PM
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Quote:
Originally Posted by fordt
but not practical unless you were throwin big tires under it
look who youre talkin to wayne!

05 f350 crew cab long bed, 10.5" rize, deaver rears, bilstein 5150s front and back, 38x15.50x18 **** cepek mud countrys, 18x9.5 pro comp 1023s clearcoated, 4.56s, pml diff covers, rize ladder bars, rize dual stabilzer with bilsteins, adj. trac bar, amp reasearch steps, doug tuned sct, airaid with zoodad, 5" straight pipe, fluidampr, welded egr, shimmed regulator, isspros, viair 480c with nathan p3, husky mats, marathon seat covers, uws toolbox, uws 100 gallon transfer tank w/15gpm pump, uws dog box

01 f150 supercrew, 33" mud grapplers, stock, for sale $13,000

05 brute force 750, snorkeled, lifted, 29.5x12 outlaws front and back, black type 7s, intake, hmf pipe, moose, asr tie rods

06 raptor 700se, 734cc, 10.75:1, cammed, intake, ported/polished, yoshi pipe w/ fmf header, power commander, 15t front, yfz shocks, 20" holeshots, soon to be 770 stroker...
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post #8 of 13 (permalink) Old 09-28-2005, 05:47 PM
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look who youre talkin to wayne!
I know, I know, but how many people do you think would go with 4.88's from the factory in a F250?
post #9 of 13 (permalink) Old 09-28-2005, 05:52 PM
 
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Hmm Should we list the people by state or county? But I think we should list them by the type of mods. So anyone with Stacks. Anyone that will argue over Fabtech or Rancho or whatever. and people that are deaf from the woo woo woo sound eminating from there tires.
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post #10 of 13 (permalink) Old 09-28-2005, 07:05 PM
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Dunno about 4.88, but I sure would like 4.30's to get my RPMs up to about 2,000 at 65mph. I would be much happier when towing my 5th wheel then. I don't like to have to run 70mph at 20K GCW going down the road.
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