Spinning to fast? - Ford Powerstroke Diesel Forum

 
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post #1 of 7 Old 07-30-2009, 03:23 PM Thread Starter
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Spinning to fast?

Hello all, Just quick question. I have looked at calculators and gear charts, and I want real world opinions and facts. I just had her regeared and wondering if I chose the right combo. Her stats:02 F350, 37 inch tires and 4:30 gears i use her for daily fun, romping red light to red light and towing a 12000lbs toyhauler and 5000lbs boat, at different times. At 60 mph she spins at 2000 rpms. Is that a reasonable rpm range?
Thanks in advance,
Ron P

2002 F350 CREW CAB SRW SHORT BOX
6 INCH SUPER LIFT
MICKEY THOMPSON CLASSIC LOCK WHEELS
DICK CEPEK 325/80-16 FUN COUNTRY 2
GRANITELLI INTAKE
4 INCH TURBO BACK 5 INCH TIP
FIRESTONE AIRBAGS
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post #2 of 7 Old 07-30-2009, 03:29 PM
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that sounds pretty close. with 4:10's you would normally see 2100 at 70 so it seems reasonable.

2002 F-250 POWERSTROKE 4X4

BANKS 4" Turbo-Back w/ Power Elbow
Converted from 3/4 to 1TON
Napa 6637 DIY Intake
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post #3 of 7 Old 07-30-2009, 03:56 PM
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I have 3.73's with 285's .@70 mph-1900rpm.


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 07-30-2009, 09:16 PM Thread Starter
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Okay so on the way home from work today I thought I would turn OD off and at 60mph she's at 2500rpm's. I normally tow with OD off, I would like your guys opinion on safety for the trans and longevity of the trans twing with OD off.

2002 F350 CREW CAB SRW SHORT BOX
6 INCH SUPER LIFT
MICKEY THOMPSON CLASSIC LOCK WHEELS
DICK CEPEK 325/80-16 FUN COUNTRY 2
GRANITELLI INTAKE
4 INCH TURBO BACK 5 INCH TIP
FIRESTONE AIRBAGS
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post #5 of 7 Old 07-30-2009, 09:47 PM
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i wouldnt tow with od off unless your going through a lot of hills...

soon to go?:
2000 f-250

soon to come?:
6.4 and spartan
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post #6 of 7 Old 07-30-2009, 11:14 PM
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ya unless you are having trouble with it downshifting you should definitely leave the o/d on.

Scott

2000 XLT f-250 7.3L extended cab long bed 4wd
s&b intake, DP tuner on the way!!!!
straight pipe, no cat,
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zoodad, ccv relocation,AIH delete, guages, hutch mod and no hood insulation (soaked in diesel from a mess that involved 3 fire trucks and 2 hazardous waste trucks)
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post #7 of 7 Old 07-31-2009, 08:21 AM
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Looks like the truck may not have a tuner and has an exhaust. That setup
will rob some torque. Chip it and you can tow at 70mph locked solid
in OD. Stock there was no way I could pull my 10k trailer with the milage
and speed I do now.... Hensley hitch helps a bunch too.

'00 F350 Supercrewzer Lariet, PSD, Auto, 3.73, CC, 4x4, SWB, SRW, 6-pos Chip, 6637 filter, 4-inch turbo back exhaust, Garrett 38r w/ high flow outlet, ITP overboost eliminator, AIH delete, Adrenaline HPOP, BTS Trans, Swamps IDM, In-tank & Pre-Pump mod, Heater Valve mod, X-car Sound Pannel mod, Train Horns / Packages: Trailer Tow, Camper, Off-Road. Overhead monitor DVD/TV/VCR (VCR under rear seat w/ 6 CD changer)
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