Does anyone have any experience with the over/under drive made by Gear Vendor? There was one on my truck when I bought it but I can't tell any difference when it shows to be on or off. I found some broken wires on the undercarriage and think it may not be working. Any help would be appreciated..
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Mine: 1991 F250 XLT xcab 2wd E4OD, 4.10, Banks wastegate turbo. Bilstein Shocks, GV Over/Under drive. 165K miles. Since I'm kinda new at this..I'm not sure what else.
Many members have GV units........ have you visited their GV web page. They may provide you with instructions if emailed........
__________________ http://photos.thedieselstop.com/show...0/ppuser/28329
93 F250 7.3 IDI S/C XLT 4X4 E40D 3.55LS, Captains chairs, Tutone Mocha, Leer 48" Hiboy cap, FR & RR hitches, full DeeZee running boards. Factory ordered/delivered Jan 93 has 160K+, it's basically a stock truck with all the Ford options, just no disc player.
Toys: 26'Jayco FK TT, 18'Sylvan Pro Fish.
I have sent them an email trying to get a wiring diagram. One thing I would like to know is should I notice a difference when it is showing to be on and when it is off? Also, should a second overdrive kick in at highway speeds?
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Mine: 1991 F250 XLT xcab 2wd E4OD, 4.10, Banks wastegate turbo. Bilstein Shocks, GV Over/Under drive. 165K miles. Since I'm kinda new at this..I'm not sure what else.
The GV unit should act like an automatic top gear. Mine kicks in at 47 mph with 3.55 rear end ratio. The green light on the rocker switch comes on to tell me it's in gear, but I can feel it kick in also.
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If you don't have anything to do, get a used diesel and a camper!
Truck 1: 1985 F350 dually 4WD 6.9 diesel crew cab auto with 83k original miles. C6 trans, 4.10 rear end. Mods are Banks Turbo, US Gear overdrive, 45gal rear tank, hydroboost brakes, additional leaf springs all around, Hellwig airbags, rear sway bar, GM glowplug controller, fuel Koalescer. 235/85 R16 Michelin XB Rib radials. 11ft.6in Vacationeer cabover camper, TorkLift tiedowns.
Truck 2: 1988 F250 7.3, C6 auto, 2WD w/3.55 limited slip rear axle, Banks Sidewinder Turbo, Gear Vendors overdrive, Utility box, hydraulic lift gate, lumber rack.
Auto: 1987 MBZ 300D Turbo 3.0 Liter 6 cylinder engine. 205K miles. Working on all the "little things" that previous owner neglected. Putting in wvo tank.
Call GV and they will send you a free manual in a couple days. They are great folks. If your green light isn't on, then your unit probably isn't coming on. On automatics there's a extra footswitch on the floor that looks just like the brights switch. That needs to be on as well as the control box at the dash. The OD won't come on til 45 mph, not sure how that works with the 4 speed auto, mine was on a 3 speed C6 auto. Get on the road and mess that that footswitch. The GV kicks in a lot harder than the tranny shifts, you can feel it, and it drops your rpms a lot in double OD. I have one on my '91 w/ a ZF-5 also. I love it.
__________________ http://photos.thedieselstop.com/show...0/ppuser/28329
93 F250 7.3 IDI S/C XLT 4X4 E40D 3.55LS, Captains chairs, Tutone Mocha, Leer 48" Hiboy cap, FR & RR hitches, full DeeZee running boards. Factory ordered/delivered Jan 93 has 160K+, it's basically a stock truck with all the Ford options, just no disc player.
Toys: 26'Jayco FK TT, 18'Sylvan Pro Fish.
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