<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: JohnDeere9610</div><div class="ubbcode-body">I don't know about a roll back with to cars on doing 70 to often either but thats what he wanted was 70mph @ 2000 rpm.
Rusty </div></div>
This one does. With me driving, anyway. I run the intestate highways at 70mph without issue, other than excessive noise in the cab and excessive fuel consumption.
I should add, the second car is on a trailer with electric brakes, not on a wheel lift.
I totally understand. There is alot better ways to get more power than banks stuff and alot cheeper http://www.totaldieselperformance.com is a good place to start.
Rusty
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1995 F-350, Auto (stock), 4x4, Crewcab, Longbed, 4" superlift, 35" BFG's All Terrains, E12000 Milemarker Winch, 5" miter stacks, 160cc Injectors, Shimmed FPR, Tymar Intake, Tyamr HPX, 7.3L Intercooler , 6.0L Tranny Cooler(Thanks Jon), ISSPRO Guages Trany/Boost/Pyro, Built tranny in garage being built.
Hi, I just wanted to get my 2c worth in. I have been "had" enough by the oil companies and am going to do something about it, namely try to improve my mileage. I have a 1995 PSD, stock, with 230K miles on it. Most of my driving, about 95+ % is unloaded truck/accessories only. When I tow it is usually a 35' Travel Supreme 5er, estimated weight 16K prox. I am planning to change the rear axle ratio from stock 4.11 to 3.55 if I can get this gear set. My calculations are that this will result in a RPM reduction of 350/400 RPM in overdrive, which I usually tow in when in flat country. With the new axle ratio, I will drop back and tow in direct drive as needed. I will use overdrive for cruising empty only, at about 2000 RPM @ 70 MPH. Hopefully, this will give me 2-3 more miles per gallon where I use the truck the most. Anyone see any severe downside to the plan? Any other ideas on better mileage driving more or less normally? BTW, with the 4.11 I cruise 2400RPM @ 70MPH.
you can just slow down to 2000 rpm which should be 60mph and get the same mileage without spending the cash to change out the gears.
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1996 CC F350XLT SRW auto, 4.10, 2WD. Original owner. 274,000 miles. Tymar intake, BTS @240,000 miles. Cat is taking some time off for testing.
Ford did have a truck back in the 80's I think that had a two speed. It was like a cab / chassis and not quite a 2 ton, maybe a ton & 1/2. Most had a 5 speed manual tranny.
Problem with a two speed behind an auto is there is always power on the drive shaft with an auto and shifting the two speed with the electric motor would grind the gear tips off.
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Paul H
OWNER
2004 Ford F350 6.0L Dualie
1996 Ford F350 7.3L Dualie
FOKISD CLUB MEMBER
FOKISD CLUB SITE WEBMASTER
Paul,
The couple of 2-speeds I've ever driven changed gears once you let off the accelerator and took power off the 2-spd unit (I guess that's how it worked). So you're saying that even with an auto, once you let off it's still pushing power through the shaft? I figured once power was released you'd be good.
??
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Black, '96, F-350, 4x4, Day Cab.
Black/Silver, '97, F-250, 4x4, CC SB DzlJim.com for some redneck engineered projects.
Even with an auto, when you let off the accelerator you get engine braking. That means if you time your axle shift to coincide with the point where you are not accelerating and do not have engine braking yet, you should be good. Pretty small window but surely possible, like shifting a manual without the clutch.
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Travis
1997 F-250 HD 4x4/OR SC LB XLT PSD E4OD 3.55LS, TDE1, Baby Swamps (150/146/A), BTS Trans, BTS programming, Front and Rear Replacements, Gooseneck, Autometer Pyro, Trans Temp and Boost in Rockin' S Pod, Cab/Clearance Lights installed, Tymar style intake, 6.0 Intercooler, Tru-Cool Max tranny cooler, Warn Premium Hubs, Shimmed FPR, Gutted EBPV, Super Duty 3" DP, 4" Exhaust, 175,000 mi., 7400 lbs., 310 HP 559 TQ
I totally understand. There is alot better ways to get more power than banks stuff and alot cheeper http://www.totaldieselperformance.com is a good place to start.
Rusty
Thanks for the link Rusty, but, ummm, wow!
Lots of things listed at some pretty hefty pricing for words. Not a single description to be found on the web site of what you get for your money, other than "chip", "injectors" or "intake".......
Been reading and getting advice off this site for years and thought it was time to add something. From my own expirences and years of selling and installing overdrive units .You do Not want a gear vendors unit . They use a electric clutch system and will burn out on down hill use and heavy pulling.The US Gear unit is gear to gear kind of like manual transmission.I have one in my 88 F350 7.3crewcab with 400,000miles on it and never a problem.I have 4.88 gears and couldnt even get to 70mph without being in the govenor before.Now 70 is still alot of rpms but made it possible. I have recently retired the old 88 truck and now have a 2002 F450 7.3 4x4 crew cab auto. .I also had a rv dealership for last 20 years and we sold and installed these units in alot of motorhomes with alot of happy customers
Is that your opinon about GV's or from your 20 years experience?
To date I can't recall anyone having a GV fail under any kind of use.
I know some 1000hp diesel dragsters run them. I know of some otr pick-up guys run them hauling heavy all the time. I have yet to hear of any actual owner not being happy with them.
At the same time, I've never heard of a US Gear owner liking their system, either.
Maybe it's the 'auto' vs. 'manual' preference that sways their opinons?
Just curious.
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Black, '96, F-350, 4x4, Day Cab.
Black/Silver, '97, F-250, 4x4, CC SB DzlJim.com for some redneck engineered projects.
Is that your opinon about GV's or from your 20 years experience?
To date I can't recall anyone having a GV fail under any kind of use.
I know some 1000hp diesel dragsters run them. I know of some otr pick-up guys run them hauling heavy all the time. I have yet to hear of any actual owner not being happy with them.
At the same time, I've never heard of a US Gear owner liking their system, either.
Maybe it's the 'auto' vs. 'manual' preference that sways their opinons?
Just curious.
Jim
Link in your sig took a dump.
Just a heads up.
I have a question, if I have a 5 speed and change to 3.55 gears, how much of a difference does it make when backing? I figured you'ed have to use 1st to take off but the backing? my truck shakes allready when slipping the clutch in reverse.
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1996 f350 2wd dulley, 7.3psd, 190k, 5 speed, 3" down pipe,5" exhaust pipe no restrictions, edge evolution programmer, stage 1 injectors, k&n air, and gauges.
just find a aux tran out of a old 2 ton and install in after the stock trans.
i did it for a few yrs while i was hauling heavy. worked great
also had a f-800 auto factory with 2ps and aux box sold now but it was a horse!!!
that is how they did the gear ratios forever i bigger trucks hauling big loads with smaller engines
also look up big truck transmisions 4x4 or 4x3 that is just a forward trans 4 spd and rear 3-4- spd .....
woody
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2001 f-350 4 dr short bed loaded PSD 504,000 miles
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