I'm going to get a 3" body lift and a set of 35" tires. I also want to change the gears!

I have a 2000 4x4 Sport, 3.55 gears
w/ 265/70-17 now. If i go with the 35" tires
what gear should i get? I was thinking 4.56.
What is the cost of doing the gear change? w/ Labor. I know the new fords have a IFS (or some kind of new set-up) front end, dose it cost a lot more to change gears???

thanks
GotMud?

------------------
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2000 F150 XLT 4x4 Sport
SC, SB, 4.2L V6, 5-Spd - Silver Metalic Clear Coat -

Planned Mod's:

3" Body lift
35" BFG's
SuperChip
K&N Air Filter kit

You can eMail me @: scott_isbrecht@hotmail.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"One Man, One Search, One Goal ... More Power!"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 

which of the rear axles are you running. i'm having trouble finding new gears for our trucks, but i know they're out there. for 35" tirs, as a rule of thumb, i always multiply the tire size times 0.12 and then, i either go up or down to the closest gears available depending on what kind of driving i like and gas economy preferred.

 

i'm not to sure on the axle size.
- for your formula. -
if i run it on the stock tires i get 3.78
(or 3.73's) but i have 3.55 so i'm low to start with!
the 35" come out to 4.20 (or 4.10's)
sence i was low to start with the 4.10's should be good!
and i should feel a little improvement!

what about the cost?

GotMud?

------------------
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2000 F150 XLT 4x4 Sport
SC, SB, 4.2L V6, 5-Spd - Silver Metalic Clear Coat -

Planned Mod's:

3" Body lift
35" BFG's
SuperChip
K&N Air Filter kit

You can eMail me @: scott_isbrecht@hotmail.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"One Man, One Search, One Goal ... More Power!"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 

First off your axle size should be an 8.8". On your gears general rule of thumb every inch you go up on tire size is the equivlent of going 1/10 higher on your gear ratio and vice versa going to smaller tires. I figured on my computer that you are running a 31.5" tire so going to a 35" tire you would be at the equivlent of a 3.20 gears. If you go to a 4.10 gear your truck would act as if it had a 3.75 gear. I have looked for new gears for my truck as well and the lowest I could find is a set of 4.30 gears which would give a much better 3.95 gear. My recommendation is to go with the 4.10's because the lower you go on gears the worse your milleage and topend.

 

where should i look to find the gears?
Jegs or Summit, Ford dealer, Pep Boys?

I need to find out about how much i need to come up with to do the gear change!

GotMud?

------------------
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2000 F150 XLT 4x4 Sport
SC, SB, 4.2L V6, 5-Spd - Silver Metalic Clear Coat -

Planned Mod's:

3" Body lift
35" BFG's
SuperChip
K&N Air Filter kit

You can eMail me @: scott_isbrecht@hotmail.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"One Man, One Search, One Goal ... More Power!"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 

HI!... GOT MUD? : I ran your gear to tire ratio's through my DRAGMATH program that is specificly designed for this task. Your stock tire size of 265/70/-R17's comes out to be 31.61 exactly. With your stock gear ratio of 3.55, and your 35" tires, this will make your 3.55's feel like a 3.21 gear ratio. (Or FORD's closest gear ratio of 3.27). If you install 4.10 gears in your truck with 35" tall tires, your 4.10"s will feel like a 3.70 gear ratio. (Or FORD's closest gear ratio of 3.73). If you install 4.30 gears in your truck with 35" tall tires, your 4.30's will feel like a 3.88 gear ratio. (FORD's does'nt have a gear ratio close to this). If you install 4.56 gears in your truck with 35" tall tires, your 4.56's will feel like a 4.12 gear ratio. (Or FORD's closest gear ratio of 4.10). I know this is a confusing subject, and I hope this clears things up for you. You forgot to mention if you have a 8.8 or a STERLING 9.75 rear end in your truck. Which is it? Any truck with a 5.4 engine usually has the STERLING 9.75 rear end in it. With you being a 4x4 you will most likely have a 8.8 front axle. The 8.8 rear ends have gear ratio's available for 3.08, 3.27, 3.55, 3.73, 4.10, 4.30, 4.56, 4.88, 5.13. The 9.75 rear end has ratio's available for 3.55, 3.73, 4.10, I've heard of 4.30 ratio but never seen it advertised anywhere, and mabey by now a 4.56 ratio? In the FORD SVO book they show a 4.10 gear set for the 9.75 rear end PART# M-4209-H410, and a 4.10 gear set for the front 8.8 axle PART# M-3410-L410. But remember that 4.10 gears will feel like 3.70's with your 35" tall tires. That will give you a little bit better acceleration from a stop than the 3.55/31.61 tire combo and the gas milage would be almost unchanged. Hope this helps you out and feel free to ask me any more questions.

------------------
NEAL [ the horsepower freak ] NEWMAN
'99' F-150 XLT SPORT, oxford white, reg cab shortbox stepside,5.4, auto, 4.10L.S, captain's chairs, bedliner, GTS carbon fiber headlight covers, ***** CEPECK clear halogen driving lights, GTS slotted tailight covers (painted oxford white), FORD locking lug nuts, tinted windows,true duel exhaust with 2.5 inch mandrel bent pipes and FLOWMASTER 3 chamber mufflers with 3' tailpipes exiting before the rear wheel like the LIGHTNING, HELLWIG rear stabalizer bar, 3 AUTOMETER guage pods, filled with tranny temp, engine temp, and oil preasure AUTOMETER "PHANTOM" guages,custom fabricated air intake trac and huge K/N filter, TPS mod, BELLTECH 2-inch rear drop, custom programed SUPERCHIP, modified POWERAID spacer, BAUMANN ENGINEERING shift kit (on stage 5 setting)BYPASS CLUTCH CONTROL VALVE/PREASURE REGULATOR VALVE, ASP POWER PULLEYS, custom tig welded and ported JBA "JET BLACK coated headers, twin DERALE 16 INCH ELECTRIC FANS, PERMA COOL 14"/10" tranny cooler with 10" electric fan. FUTURE MODS : FORD SVT 24LB INJECTORS, BBK 75MM THROTTLE BODY, AADI F1 RAM AIR HOOD, traction bars, and a KENNE BELL BLOWZILLA supercharger.
ESTIMATED H.P TO DATE : 345H.P / 425ft/lbs of torque.

OTHER TOYS : "83" PRO STREET FORD RANGER : 351-w stroked to 408c.i 625H.P (natural), 875H.P with 250H.P "BIG SHOT" N.O.S kit, tubbed (crome moly tubing), 12 point chrome moly roll cage, 4-link with coil overs, MUSTANG II front suspension, c-4 tranny (race prepped), 4000rpm stall converter(8 INCH), 3" chrome moly driveshaft,AUTOMETER guages, 15.50 MICKEY THOMPSON rear tires, 4" M/T front tires, CENTERLINE CON-VO PRO rims, fiberglass hood - bumper - prostock hood scoop, wishbone trac-link, two chrome moly driveshaft loops, 16 gallon RCI fuel cell,etc



[This message has been edited by Neal (edited 07-28-2000).]

 

Check out this page that I made up to help you:
http://members.home.net/mjbobbitt/f150/tirecalc.html

 

Check out www.ring-pinion.com
They have alot of info on their site. I always see their ads in truck mags.

------------------
1999 F250 LD S/C XLT 4x4
5.4L, 3.73, 4R100 trans.
Flowmaster 40 series, K&N, Poweraid, Superchip, Rancho RSX shocks, Stull billet grille, 2-PIAA Pro80XT's (120W), 2-KC Daylighters (150W)
265/70 R17 BFG AT KO's on 17x8 American Racing Atlas rims
Kenwood 7000 CD, Alpine 3342 Signal Processor, Alpine MRV-F353 5Ch. Amp, Pioneer TS-A6865 3-way speakers. CompuStar alarm/autostart. Coming soon: MTX Thunderforms box

 

Dear Neal:

Nicely done.

------------------
Y2K™ Jim Gorka

Toreador Red, Keyless XLT SC SB 5.4L E4x4 4wDisc/ABS, 3.73LS, Skid, HD 7700# Towing, LT-245's on Chrome, Tube-Steps, Captain's, 6CD, Tonneau, named: "Nick"

 

HI!... Y2K 7700 4X4 : THANKS! Well, what can I say? I was bored!LOL! It took me about an hour to figure all that out on my computer!LOL!

------------------
NEAL [ the horsepower freak ] NEWMAN
'99' F-150 XLT SPORT, oxford white, reg cab shortbox stepside,5.4, auto, 4.10L.S, captain's chairs, bedliner, GTS carbon fiber headlight covers, ***** CEPECK clear halogen driving lights, GTS slotted tailight covers (painted oxford white), FORD locking lug nuts, tinted windows,true duel exhaust with 2.5 inch mandrel bent pipes and FLOWMASTER 3 chamber mufflers with 3' tailpipes exiting before the rear wheel like the LIGHTNING, HELLWIG rear stabalizer bar, 3 AUTOMETER guage pods, filled with tranny temp, engine temp, and oil preasure AUTOMETER "PHANTOM" guages,custom fabricated air intake trac and huge K/N filter, TPS mod, BELLTECH 2-inch rear drop, custom programed SUPERCHIP, modified POWERAID spacer, BAUMANN ENGINEERING shift kit (on stage 5 setting)BYPASS CLUTCH CONTROL VALVE/PREASURE REGULATOR VALVE, ASP POWER PULLEYS, custom tig welded and ported JBA "JET BLACK coated headers, twin DERALE 16 INCH ELECTRIC FANS, PERMA COOL 14"/10" tranny cooler with 10" electric fan. FUTURE MODS : FORD SVT 24LB INJECTORS, BBK 75MM THROTTLE BODY, AADI F1 RAM AIR HOOD, traction bars, and a KENNE BELL BLOWZILLA supercharger.
ESTIMATED H.P TO DATE : 345H.P / 425ft/lbs of torque.

OTHER TOYS : "83" PRO STREET FORD RANGER : 351-w stroked to 408c.i 625H.P (natural), 875H.P with 250H.P "BIG SHOT" N.O.S kit, tubbed (crome moly tubing), 12 point chrome moly roll cage, 4-link with coil overs, MUSTANG II front suspension, c-4 tranny (race prepped), 4000rpm stall converter(8 INCH), 3" chrome moly driveshaft,AUTOMETER guages, 15.50 MICKEY THOMPSON rear tires, 4" M/T front tires, CENTERLINE CON-VO PRO rims, fiberglass hood - bumper - prostock hood scoop, wishbone trac-link, two chrome moly driveshaft loops, 16 gallon RCI fuel cell,etc

 

Say, Neal: You seem pretty well connected to hardware, wonder if you can point me to some info on the innerds of the transfer case and front axle for my truck.

I called someone at Dana -- only to learn that neither the xfer case or the front axle are Dana -- but Ford Proprietary. I'd really like to get into the details of the entire drivetrain -- and am hoping for a set of manuals for my birthday, but until then...

Can you (or anyone else) help?

(oops -- spelled Neal wrong, Doh!)
------------------
Y2K™ Jim Gorka

Toreador Red, Keyless XLT SC SB 5.4L E4x4 4wDisc/ABS, 3.73LS, Skid, HD 7700# Towing, LT-245's on Chrome, Tube-Steps, Captain's, 6CD, Tonneau, named: "Nick"




[This message has been edited by Y2K 7700 4x4 (edited 07-30-2000).]

 

HI!... Y2K 7700 4X4 : Sorry, can't help you on the 4x4 stuff. I've never had a 4x4 or have been very interesred in 4x4ing. My knowledge is limited you know!LOL! I'll try to get JMC to answer that question for you. He's into 4x4ing. He also has quite a bit of manuals for FORD trucks laying around. Sorry, wish I could of helped.

------------------
NEAL [ the horsepower freak ] NEWMAN
'99' F-150 XLT SPORT, oxford white, reg cab shortbox stepside,5.4, auto, 4.10L.S, captain's chairs, bedliner, GTS carbon fiber headlight covers, ***** CEPECK clear halogen driving lights, GTS slotted tailight covers (painted oxford white), FORD locking lug nuts, tinted windows,true duel exhaust with 2.5 inch mandrel bent pipes and FLOWMASTER 3 chamber mufflers with 3' tailpipes exiting before the rear wheel like the LIGHTNING, HELLWIG rear stabalizer bar, 3 AUTOMETER guage pods, filled with tranny temp, engine temp, and oil preasure AUTOMETER "PHANTOM" guages,custom fabricated air intake trac and huge K/N filter, TPS mod, BELLTECH 2-inch rear drop, custom programed SUPERCHIP, modified POWERAID spacer, BAUMANN ENGINEERING shift kit (on stage 5 setting)BYPASS CLUTCH CONTROL VALVE/PREASURE REGULATOR VALVE, ASP POWER PULLEYS, custom tig welded and ported JBA "JET BLACK coated headers, twin DERALE 16 INCH ELECTRIC FANS, PERMA COOL 14"/10" tranny cooler with 10" electric fan. FUTURE MODS : FORD SVT 24LB INJECTORS, BBK 75MM THROTTLE BODY, AADI F1 RAM AIR HOOD, traction bars, and a KENNE BELL BLOWZILLA supercharger.
ESTIMATED H.P TO DATE : 345H.P / 425ft/lbs of torque.

OTHER TOYS : "83" PRO STREET FORD RANGER : 351-w stroked to 408c.i 625H.P (natural), 875H.P with 250H.P "BIG SHOT" N.O.S kit, tubbed (crome moly tubing), 12 point chrome moly roll cage, 4-link with coil overs, MUSTANG II front suspension, c-4 tranny (race prepped), 4000rpm stall converter(8 INCH), 3" chrome moly driveshaft,AUTOMETER guages, 15.50 MICKEY THOMPSON rear tires, 4" M/T front tires, CENTERLINE CON-VO PRO rims, fiberglass hood - bumper - prostock hood scoop, wishbone trac-link, two chrome moly driveshaft loops, 16 gallon RCI fuel cell,etc

 

Hey Neal,
I've got a 99 S/C Flarside 4.6 V-8 4X2 that I changed from the stock 255/70/16 tires and aluminum rims (approx. 50 lbs per wheel) , to the 265/70/17 tires with the chrome ORP wheels (approx. 80 lbs. per wheel) and added 3" Lift. Now I feel like I have acceleration of the line and my shifting seems a little off. I have 3.55 gears and the 8.8 axle. Just wondering if you have any suggestions of a set up that would give me my power off the line but not affect my gas mileage!?! Any suggestions!!! I was thinking 3.73 gears but the more I look at it I'm thinking of going with 4.10.

 

I meant that I have NO acceleration off the line. I feel like I pulling a horse trailer!!! I've got Honda's passing me up! Help!!!

 

HI!... DIRTRACKER : I ran your tire sizes/gear ratio's on my DRAGMATH program and came up with the following. Your stock tire size was 30.06 (255/70-R16). Your tire size now is 31.61 (265/70-R17). Right now with your 31.61 tall tires, your 3.55 gears feel like a 3.38 ratio. Now if you install 3.73 gears with your 31.61 tall tires, the 3.73's will feel like a 3.55 ratio. Now if you install 4.10 gears with your 31.61 tall tires , the 4.10's will feel like a 3.90 ratio. Now if you install 4.30 gears with your 31.61 tall tires, the 4.30's will feel like a 4.09 ratio. Now if you install 4.56 gears with your 31.61 tall tires, the 4.56's will feel like a 4.32 ratio. If you want a real good holeshot, I would go with the 4.30 gears, but remember that they will feel like a 4.09 gear ratio. Standing still acceleration will increase a lot but your gas milage on the highway will suffer a bit. If you want a little bit better acceleration but with almost unchanged gas milage, I wood go with the 4.10 gears. But remember that they will feel like a 3.90 ratio. Hope this helps you out.

------------------
NEAL [ the horsepower freak ] NEWMAN
'99' F-150 XLT SPORT, oxford white, reg cab shortbox stepside,5.4, auto, 4.10L.S, captain's chairs, bedliner, GTS carbon fiber headlight covers, ***** CEPECK clear halogen driving lights, GTS slotted tailight covers (painted oxford white), FORD locking lug nuts, tinted windows,true duel exhaust with 2.5 inch mandrel bent pipes and FLOWMASTER 3 chamber mufflers with 3' tailpipes exiting before the rear wheel like the LIGHTNING, HELLWIG rear stabalizer bar, 3 AUTOMETER guage pods, filled with tranny temp, engine temp, and oil preasure AUTOMETER "PHANTOM" guages,custom fabricated air intake trac and huge K/N filter, TPS mod, BELLTECH 2-inch rear drop, custom programed SUPERCHIP, modified POWERAID spacer, BAUMANN ENGINEERING shift kit (on stage 5 setting)BYPASS CLUTCH CONTROL VALVE/PREASURE REGULATOR VALVE, ASP POWER PULLEYS, custom tig welded and ported JBA "JET BLACK coated headers, twin DERALE 16 INCH ELECTRIC FANS, PERMA COOL 14"/10" tranny cooler with 10" electric fan. FUTURE MODS : FORD SVT 24LB INJECTORS, BBK 75MM THROTTLE BODY, AADI F1 RAM AIR HOOD, traction bars, and a KENNE BELL BLOWZILLA supercharger.
ESTIMATED H.P TO DATE : 345H.P / 425ft/lbs of torque.

OTHER TOYS : "83" PRO STREET FORD RANGER : 351-w stroked to 408c.i 625H.P (natural), 875H.P with 250H.P "BIG SHOT" N.O.S kit, tubbed (crome moly tubing), 12 point chrome moly roll cage, 4-link with coil overs, MUSTANG II front suspension, c-4 tranny (race prepped), 4000rpm stall converter(8 INCH), 3" chrome moly driveshaft,AUTOMETER guages, 15.50 MICKEY THOMPSON rear tires, 4" M/T front tires, CENTERLINE CON-VO PRO rims, fiberglass hood - bumper - prostock hood scoop, wishbone trac-link, two chrome moly driveshaft loops, 16 gallon RCI fuel cell,etc