1980 F-700 Detroit Diesel ???
For the last several weeks, I have been driving a 1980 F-700 grain truck; single rear axle, air brakes, 5-speed and 2-speed axle.
The hood hinges and opens like a pickup truck = most inconvenient. There is a bit of quandary about the engine in this truck; it is DEFINITELY a V-8 TWO-STROKE Detroit; we are all agreed on that. Everything about the engine and engine bay appear to be O.E.M.; if it has been swapped in, whoever did it covered their tracks very well. However, the only reference I can find to a V-8 Detroit in these trucks is the Detroit Diesel 8.2L "Fuel Pincher" V8, which is a 4-stroke. The engine in this truck is definitely two-stroke. I would think 318/8v71, but it does not appear massive enough for that. I think this truck originated in Canada; were Detroit engines other than the Detroit Diesel 8.2L available in Canadian trucks ? Could it be a 8V-53 ? Thanks for reading. |
Someone here might know about heavier trucks, but this forum is really more about the light trucks (~1 ton and smaller). You might want to try the Large Truck forum.
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Originally Posted by Nothing Special
(Post 17523542)
Someone here might know about heavier trucks, but this forum is really more about the light trucks (~1 ton and smaller). You might want to try the Large Truck forum.
Maybe a nice moderator could move this to the proper place; thanks. |
I’m guessing it would be a 6-71 Detroit.
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Originally Posted by LongRider
(Post 17523314)
For the last several weeks, I have been driving a 1980 F-700 grain truck; single rear axle, air brakes, 5-speed and 2-speed axle.
The hood hinges and opens like a pickup truck = most inconvenient. There is a bit of quandary about the engine in this truck; it is DEFINITELY a V-8 TWO-STROKE Detroit; we are all agreed on that. Everything about the engine and engine bay appear to be O.E.M.; if it has been swapped in, whoever did it covered their tracks very well. However, the only reference I can find to a V-8 Detroit in these trucks is the Detroit Diesel 8.2L "Fuel Pincher" V8, which is a 4-stroke. The engine in this truck is definitely two-stroke. I would think 318/8v71, but it does not appear massive enough for that. I think this truck originated in Canada; were Detroit engines other than the Detroit Diesel 8.2L available in Canadian trucks ? Could it be a 8V-53 ? https://cimg6.ibsrv.net/gimg/www.for...32bf18f62a.jpg |
Originally Posted by 1979 Ford
(Post 17524009)
I’m guessing it would be a 6-71 Detroit.
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Originally Posted by NumberDummy
(Post 17524067)
1980: The 4th digit of the VIN is the engine code:
If I am reading that correctly, then it is possible that it could be a 8V71 as I first suspected; the next time I am near it I will investigate the VIN; it may be a few days as we finished that phase of things a couple days ago. |
...then it is possible that it could be a 8V71 as I first suspected... |
Wow, it would be very tough to get an 8V-71 in an F-700 without it looking like a total hack job and having half of it in the cab.
An 8V-71 is very large, has a blower sitting on top, and the valve covers are usually held on with two big hand nuts on either side. An 8V-53 is unlikely. It would be a better fit than a 8V-71, but the 8V-53 is a very rare engine and was really only used in construction equipment. A 6V-53 (V-6) would fit, and was used in a lot of trucks back in the 60's and 70's, Fords included. You are sure it's a 2-stroke? Got a picture? |
Originally Posted by Louisville Joe
(Post 17524670)
Wow, it would be very tough to get an 8V-71 in an F-700 without it looking like a total hack job and having half of it in the cab.
An 8V-71 is very large, has a blower sitting on top, and the valve covers are usually held on with two big hand nuts on either side. An 8V-53 is unlikely. It would be a better fit than a 8V-71, but the 8V-53 is a very rare engine and was really only used in construction equipment. A 6V-53 (V-6) would fit, and was used in a lot of trucks back in the 60's and 70's, Fords included. You are sure it's a 2-stroke? Got a picture? It sure looks, sounds and drives like a two-stroke. It is definitely a Detroit. It is definitely a V-8 Size wise, it is comparable to a 3208 CAT At idle, it sounds like it is turning half wide open; with the least bit of throttle, it is screaming like it is going to fly apart. To be as old as it is, it is clean as a whistle; it barely gets rid of any oil; and it uses about half the fuel some of the other diesel trucks use doing the same work. I filled it the other day and it only held 7 gallons; two old gas-burners that had done the same work held 39 and 47 gallons. I will try to remember to take some pictures the next time I am around it. One thing for certain, if we are wrong and it does turn out to be a four-stroke, it sure is trying to act and sound like a two-stroke. |
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Originally Posted by Louisville Joe
(Post 17524866)
8.2L:
https://sc02.alicdn.com/kf/HTB1p7vuJ...8-2-Engine.jpg 8V-71: https://i.pinimg.com/originals/9d/8a...a55baf0600.jpg Many thanks. |
8V71 in a F series would be tight and heavy 1000kg ( ton) , are you sure its not a 6V53. 318 cu.
sorry, forgot about the V8 8.2 fuel pincher diesel in the above post. |
Originally Posted by roKWiz
(Post 17534926)
8V71 in a F series would be tight and heavy 1000kg ( ton) , are you sure its not a 6V53. 318 cu.
sorry, forgot about the V8 8.2 fuel pincher diesel in the above post. The 8.2 I drove was an 82 or 83 with an 89 cab. It was a GMC that caught fire and been rebuilt. It was a single axle dump truck that may hauled 2 1/2 yards. It wasn't a decent 10 ton tandem dump truck. |
Originally Posted by 1979 Ford
(Post 17535127)
When did the 8.2 fuel pincher start showing up in trucks?
The 8.2 I drove was an 82 or 83 with an 89 cab. It was a GMC that caught fire and been rebuilt. It was a single axle dump truck that may hauled 2 1/2 yards. It wasn't a decent 10 ton tandem dump truck. In Fords, I thought 79-80 ?? |
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