regearing - Ford Powerstroke Diesel Forum
 
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post #1 of 7 Old 11-17-2009, 06:18 PM Thread Starter
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regearing

Does my truck with 37's need gears? ive heard if you go past 37's you need them, but ive also heard i do. But im thinkin about gettin them. im thinkin about 4.30 gears, will it help my mpg? On powerstroke help .org he says that lifted powerstrokes with stock runnin gears will eat threw transmissions. I dont want to have to replace my tranny. i also plan on adding performance parts to my truck to, like tuner and injectors. I want my truck to last and want to increase my mpg.

2003 Ford F350 Crewcab 7.3 Powerstroke
mods:
6in. Lift
37x13.50x20 Toyo Open Country M/T
20in. Moto Metal 951's
2 12" Kicker subs
Hifonics amps
Kenwood in-dash
4in. down pipe with 5in.exhaust with 6in. tip.
Soon to come:
Tony wildman chip
afe cold air
2005 front end

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post #2 of 7 Old 11-17-2009, 06:21 PM
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Yes, I would re-gear if I were you.

The Mullet Mod
Stock 2005 F-350 4x4
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post #3 of 7 Old 11-17-2009, 07:21 PM
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4.56 would be a good combination with your tire size.Would help with MPG'S too.


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2001 F250.Custom Tuned,Ball-Buster Turbo,5"Exhaust
ITP Reg.Return,TD Billet Converter,Built Tranny,Snow Meth/Water Stage 2..plus a few more things!!She will Hunt
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post #4 of 7 Old 11-17-2009, 07:28 PM
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What about 4 10s and 35s
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post #5 of 7 Old 11-18-2010, 06:24 PM
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Quote:
Originally Posted by Big Blue Stroker View Post
What about 4 10s and 35s
bump for this

2000 F250 lariat 7.3 - 4.5'' Donahoe Racing/Bilstein 5100's/BDS DualSS with Blisteins/20''MotoMetals/35's toyo's/08tailgate
/09 taillights/07 bumper, 07 billet grille/07headlights/Recon clear Cab lights/Chicken lights/dynamatt/zoodad/6637 Intake/MBRP 5" Exhaust
/Diprocol gauges/JohnWoods valvebody/6.0 Trans Cooler/Pioneer Avic D3/Bushwacker Flares/PHP tunes/AMP Research/ 8.5' Western MVP plus
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post #6 of 7 Old 11-18-2010, 08:28 PM
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Dont do it... If your planning on adding power, dont.

I loved my truck with 37's and 3.73's... The power is there when you need it, and crusing down the hwy at 80 your sitting right at 2000 RPM's

With the 4.30's I am at 2400 or so. I'll take a quick pic tomorrow.

As far as the tranny comment, the factory tranny will not hold up to factory power, has nothing to do with the size of the tires. This truck ate the first tranny at 24k... It was on factory tires.

If you think about regearing go no bigger then 4.10's...

Please. You will not be happy.

01 F-250 SC PSD,320k,16 Isspro Gauges, AFE-2,CCV Mod,IAH delete,map reg,Modded H2e, 6.0 IC, 230/100 from P.I.S, Studs, 910 springs, Forged rods, Water injection,Hydra chip-No Limit/Gearhead tuning, Swamps HVHF IDM, MBRP 4" dual's, Aero, 6" tip's, 4" Revtek lift, 37/12.5/16.5 MT's
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post #7 of 7 Old 11-18-2010, 08:29 PM
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Quote:
Originally Posted by jbeasts10 View Post
4.56 would be a good combination with your tire size.Would help with MPG'S too.
Yikes!!!

I think not!

01 F-250 SC PSD,320k,16 Isspro Gauges, AFE-2,CCV Mod,IAH delete,map reg,Modded H2e, 6.0 IC, 230/100 from P.I.S, Studs, 910 springs, Forged rods, Water injection,Hydra chip-No Limit/Gearhead tuning, Swamps HVHF IDM, MBRP 4" dual's, Aero, 6" tip's, 4" Revtek lift, 37/12.5/16.5 MT's
Joe



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