Decode help for my N-600.
Last edited by cmongft; Sep 13, 2014 at 09:00 PM. Reason: Pic
N60 = N600 (gas).
C = 330 2V Medium Duty FT engine.
U = Louisville KY Assembly Plant.
795357 = 1966, assembled December 1965.
163" Wheelbase.
J = Rangoon Red.
N600 (gas), 17,000 lbs. GVWR
B481: B4 = Medium Beige Crush Vinyl & Medium Beige Wicker Pattern Vinyl / 81 = 81A Standard Cab.
A = New Process 435 4 Speed Manual Transmission.
F8 = Eaton model 13802 Two Speed Rear Axle / 6.33/8.81 / 15,000 lbs. Rear Axle Capacity.
17,000 lbs. Gross Vehicle Weight Rating.
164 net HP @ 3,800 RPM
510043:
51 = Denver CO Ford District Sales Office, where the original selling dealer ordered the truck from.
0043 = Domestic Special Order number, truck was ordered special by the original purchaser, not bought off the lot."
As to the rear axle ratio, that to me is only part of what limits this trucks top speed. Think of it as a system, if you raise the speed of the truck by 10 or 20 mph, then that just makes the brakes less effective, so to really make this truck a freeway cruiser, it will take more than increasing the horsepower and changing the gear ratio, it is also going to require a brake upgrade, not a rebuild on what is there, but a larger brake system, to dispel the increased heat from the higher speeds, especially with todays drivers following just that much closer, and frankly not used to dealing with older trucks which have smaller brakes than more modern trucks.
There is a heck of a difference in stopping our older trucks with relatively small by modern standards four wheel drum brakes and the newer trucks with larger drums, or full disk brakes at all four corners, especially on the second hard brake application, where the drums start to fade, but the disk brakes are still going strong.
I am in much the same boat with my C600 in this regard, I have checked and have the largest heavy duty air brake option that was available, so that helps, and as mentioned, I would not drive a dump truck like this without those HD brakes, but still the lower gear ratio means that I am not the fastest out on the freeway. I can hit 65-67, perhaps 68 or so at 4000 rpm, although normally I stay around 50 - 55 mph. A two speed rear axle would help. The Allison is no different that a straight thru manual, IE 1:1, and the Allison is in converter lockup (available in all 6 forward gears) so I have zero transmission slippage, just like a manual, so that two speed would be the only option as I do not want to give up my low speed crawler gear.
Just food for thought
David




