E-Series VansTechnical discussion of topics related to vans powered by any of the Navistar engines. This covers a broad number of years, but there isn't enough demand to split it any further.
Can somebody tell me the ratio and whether it is limited slip? [img]/ubbthreads/images/graemlins/ooo.gif[/img] [img]/ubbthreads/images/graemlins/ooo.gif[/img] [img]/ubbthreads/images/graemlins/ooo.gif[/img]
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88 E350 7.3 C6 154k
done: Remanufactured Inj pump, New Stanadyne injectors, Michelin M/S tires, ShellZone AF & Fleetrite SCA, replaced and relocated fuel filter assembly, elec fuel pump, no flying saucer, return lines/ o-ring kit, new heater core, 8 Beru glow plugs, oil & filter, stabilator on sliding door (plastic slider cracked in half)
Limited slip? Perhaps the "L" indicates something, but you could also just as easily pull the cover plate and inspect it, availing yourself of the combined opportunity for education and lubrication, or put the axle on jackstands and measure the torque required to turn the diffy.
See if you can look up a fellow who goes by War Wagon. He's got a van of your vintage, and might be able to tell you about the fuel economy you may expect. All I can offer is a guess that it will be lower than mine, since I'm turbocharged and aftercooled. [img]/ubbthreads/images/graemlins/shrug.gif[/img] It will also be affected by the efficiency of your torque converter, and whether or not your torque converter locks.
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"Nothing in life is so exhilarating as to be shot at without result." - Sir Winston Churchill
May your road stay clear & dry, may your fuel never gel, and may you never be outsmarted by your idiot lights.
Ordinarily in Fordese, a limited slip differential tag would be 3L54 where an open would be 3.54 . Easy way be certain is to jack up the rear end and turn one wheel. If the other wheel turns in the same driection, you have LS. If it turns in the opposite direction, you have an open diff. On an ordinary van, a LS differential would be rare as it is a special order option.
Fuel mileage - well my regular diesel cargo van returns about 16 mpg. But it has the overdrive trans and a locking torque converter with 3.55 gears. You will be turning higher RPM's with the direct transmission and non-locking converter, so your economy will be somewhat less.
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1985 International rollback, 6.9L 5 speed "Li'l Big Truck"
With your Bill of Material number, which is the second row of numbers, according to Dana, you have a 3.54, and it is not a limited slip unless someone installed an aftermarket or OEM type after factory build.
You can go here and enter the numbers from the second row and get build part info for your axle.
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Former Ford Diesel Tech
ASE Certified Parts Counterperson, Automotive, Medium, & Heavy Truck Technician
1999 F250 XLT 4x4, Red, 7.3 6spd AWA5, 3.73LS rear, CCV Mod, APC Headlamps, Autometer C2 Gauges, (Boost,Pyro,Trans), 4" Turbo-back exhaust, XM Radio, AIS, ITP Regulated return, fuel feed lines, Airdog, & 4pos. chip. My Truck
2001 Ford Escort ZX2 - Black- 4cyl 2.0DOHC, 5spd.
1999 F350 4x4 XLT, CC/LB PSD, 6spd, Aluminum service bed, York Compressor Onboard air, CCV, Custom Intake & Exhaust, Strobes and a few other goodies
RIP Steph F. & Trista J., 4/27/07, you will be missed by many.
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