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1966 N750

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Old Nov 27, 2021 | 04:37 PM
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From: Cedar Grove, WI
1966 N750

I have my eye on a 1966 (we think) N750 as a project truck. Currently set up with a Heil dump bed. Has a 5 speed and two speed rear end.

warranty plate is as below. I’m wondering if anyone can decode it and tell me a bit more.

I know it needs some brake work, and appears to have an interesting setup with two master cylinders. I’m also concerned because basic parts like brake shoes don’t show up even on the Napa site.

are these trucks still worth trying to fix up?

thanks in advance for any words of wisdom (or words of encouragement to run away )


 
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Old Nov 27, 2021 | 04:44 PM
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Two masters? One beside the other on the firewall? If so, one is the brakes, the other the clutch. You should have a hydro-vac brake booster on the frame under the driver. More later.
 
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Old Nov 27, 2021 | 05:09 PM
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From: Cedar Grove, WI
Originally Posted by 85e150
Two masters? One beside the other on the firewall? If so, one is the brakes, the other the clutch..
Not exactly. Went to see the truck today and the current owner explained it as “two master cylinders”. There is what looks to be a reservoir/master cylinder bolted to the firewall, and then a booster under the cab on the drivers side.

I took a picture. The owner said that the seals were bad and when sitting for a while brake fluid leaks into the booster and the vacuum is pulling it into the engine so it smokes a bit after sitting. Had me scratching my head a little but i figured the brakes were going to get replaced anyway if I restore it a little




. That is, if parts are available.
 
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Old Nov 27, 2021 | 05:46 PM
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You can get rebuild kits or straight rebuilt units for the hydro-vac booster. There should be a model number on it somewhere. Bendix, Midland and other fine brands.

N75 = '64-'69 N750

E = 361 2V FT gas V8

U = Louisville Assembly Plant

782042 = 1966 numerical series

181 = 181 inch wheelbase

J = Red

N750 = '64-'69 N750, 22,500 lbs GVWR

F81 = Upholstery, cab type, seat type--I do not have the info for this model year.

N = Clark model 2621-V1, OR 2622-V1, OR Dana (Spicer) model 6352--all 5 speed direct transmissions

G3 = Eaton model 16802 Two Speed Rear Axle / 6.50/9.04 / 17,000 lbs. Rear Axle Capacity.

No front axle code. In MY '64 to '69, only optional axles were stamped on the warranty plate. So your truck had the standard axle, probably a Ford with 5,500 or 6,000 lbs capacity.

22500 = 22.500 lbs GVWR

182 3800 = 182 certified net HP @ 3800 RPM

450794
45 = Davenport District Code
0794 = Special Order Number (Engine, trans, axle, color are all specified, so the special order must have been something else)

Let me know if this matches up to your truck. Make sure the VIN on this plate matches the title.

What kind of wheels do you have? The widow makers were on a lot of these.





 
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Old Nov 27, 2021 | 07:31 PM
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From: Cedar Grove, WI
Originally Posted by 85e150
Let me know if this matches up to your truck. Make sure the VIN on this plate matches the title.
Thank you! The matches up perfectly! Current owner wasn’t sure what engine was in it, so this helps fill in that mystery.

I’m not sure on the wheels but I’ll look into it! Looking at some pictures I think they very well might be. This would be my first project of this scale. Learning via a firehose thank you again for the help!
 
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Old Nov 29, 2021 | 09:20 AM
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One seal keeps the fluid in hydrovac

Hi
Was hoping Hortwag would reply as we went through this with his N600 !
After disassembly, it looked like just one seal prevents the fluid from going under the vacumn of bellows.
Knowing it had to be impervious to fluids I was able to size at GRANGER and we got TEN for $13.76.
If you get apart, sand blast and want one let us know. MARK



 
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Old Nov 29, 2021 | 03:45 PM
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Originally Posted by SVO2SCJ
Hi
Was hoping Hortwag would reply as we went through this with his N600 !
After disassembly, it looked like just one seal prevents the fluid from going under the vacumn of bellows.
Knowing it had to be impervious to fluids I was able to size at GRANGER and we got TEN for $13.76.
If you get apart, sand blast and want one let us know. MARK
Thanks to this board I made the decision to buy the truck. Waiting to get shipping lined up from Indianapolis to Wisconsin. Should be a fun project.





I think I’m going to ditch the old Heil dump bed that’s seen better days and then make a nice flat/stake bed and use oak planks with some polished stainless rails. I have ideas for sure. Not just to start tearing into it to see if I have surprises. Truck runs and drives. Just needs some TLC, and no major rust through. Just a patina that needs blasted off. Couple of small areas on the drivers fender will need a patch welded in, but otherwise it’s surprisingly solid.

i forgot to get closer pictures of the wheels but I don’t *think* they’re widowmakers.

thanks all for the help! I’m sure I won’t be a stranger as I tear into this thing.

 
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Old Nov 29, 2021 | 04:13 PM
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Dayton style wheels, not WM, and "easier " to convert to tubeless.
 
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Old Nov 29, 2021 | 04:16 PM
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Those, at least the front, are tube type regular clinch rims. The rear are also good to go if they are the same style.

The widow makers are the Firestone "Budd" type wheel. Yours are the "Dayton" style.
 
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