need opinion on rear gears? - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 3 (permalink) Old 04-11-2010, 05:23 PM Thread Starter
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need opinion on rear gears?

yes I know I'm opening a CAN O WORMS but the new to me duelly is going to eat me alive on fuel. I believe it has 4:10 rear gears I really like my srw which has 3:73 rear gears but the duelly is going to become my primary camper tugger a 37' 5er so do I go with a gear venders unit or the trouble of changing out the gears? the srw runs 1800 rpm @ 70 with 3:73s duelly runs 2400 rpm @ 70 give or take a little.

1) 99 f-350 srw 7.3 6pos. bully dog, afe intake, mrbp 4" exhaust,250,000 miles and still rollin.
2) 2000 excursion 7.3 afe intake, mrbp 4" exhaust. chip coming
3) NEW TO ME2000 cc drw 7.3 let the mods begin
4) FOR SALE 87 f250 6.9 9' utility body.
5) SOLD 91 f150 good truck just well used.Gonna miss the old girl allways started even after sitting for 6 months.

I think i'm trailer poor ) 22' w\18' tilt car hauler, 18' flat bed, 2 horse D&D, 12' utility, 19' "v" nose, and 37' 5er

"quote from tank"
"I use baby wipes.....


Because if you think that a wadded up piece of paper is actually getting the chit off of your butt.....then I have to ask a question....

.....if you wiped a turd on your arm....would you just use a paper towel to get the turd off?.....or would you wash your arm?...


...let that thought roll around in your head for a moment...


" thank you tank for that insightful thought

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post #2 of 3 (permalink) Old 04-11-2010, 05:39 PM Thread Starter
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OR what kind of rpm changes would happen if I do the super single? hmmm

1) 99 f-350 srw 7.3 6pos. bully dog, afe intake, mrbp 4" exhaust,250,000 miles and still rollin.
2) 2000 excursion 7.3 afe intake, mrbp 4" exhaust. chip coming
3) NEW TO ME2000 cc drw 7.3 let the mods begin
4) FOR SALE 87 f250 6.9 9' utility body.
5) SOLD 91 f150 good truck just well used.Gonna miss the old girl allways started even after sitting for 6 months.

I think i'm trailer poor ) 22' w\18' tilt car hauler, 18' flat bed, 2 horse D&D, 12' utility, 19' "v" nose, and 37' 5er

"quote from tank"
"I use baby wipes.....


Because if you think that a wadded up piece of paper is actually getting the chit off of your butt.....then I have to ask a question....

.....if you wiped a turd on your arm....would you just use a paper towel to get the turd off?.....or would you wash your arm?...


...let that thought roll around in your head for a moment...


" thank you tank for that insightful thought

#46 AMERICAN (blood) club
#241 singles club
# ? Dually club
# ? Excursion club
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post #3 of 3 (permalink) Old 04-12-2010, 01:27 AM
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Your speedo is off, or you're running much larger tires with the 3.73s... With the stock tire size, 70 MPH puts you at 2000 RPMs. It sounds like you'll be towing a HUGE trailer, so I'd leave the 4.10s in the dually. I wouldn't go with the Gear Vendors overdrive, Aussie Dave put one in his truck for towing and blew it up, cause apparently they're not designed for the extra towing weight.

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