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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

1985 f150 351 engine replacement

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Old Jan 17, 2019 | 11:28 AM
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Question 1985 f150 351 engine replacement

Don’t want to waste anyones time but I also don’t want to miss what maybe a good deal...
background: I am the second owner and this truck has 700,000 Kms. 200,000 on it’s second motor. I have owned it six years and it has always idled rough. Several mechanics have tried to tune it up but with no better results then my own tune ups, really just plugs, rotor, cap. Blows lots of carbon on start up after periods of no use. Wiring is a weak point. Anyways at the junk yard looking for some parts: coil,ignition box etc. And open up the hood on a grand Torino and there is a 351 2barrel looking real nice. Check the odometer and it is at 45,000! Interior mint rusty fenders and rockers probably out of some older owners garage. The landau? roof has no rips. Anyways my buddy thinks that this engine could be swapped with not too much trouble. He has experienced replacing engines, mostly ford six cylinders. They engines in question are both 351 c.i. A Windsor 4 barrel in my truck (rad hose to pump/ bell housing. five bolt valve covers) will be back to scrap yard to check that it is a winsdsor engine, look at oil pan and transmission type. So any thoughts or suggestions? Waiting for the return of my winter beater to head back to auto junkyard. Oh yeah they will take out and deliver engine 450 Canadian. Should I get the transmission too?
 
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Old Jan 17, 2019 | 12:57 PM
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That would be the only thing is it the same as what you have in the truck.
If so and that is the real mileage I would go for both.

Now you may have to swap oil pans & pickups. Water pump & pulleys may also be different between the 2.

I would not scrap the truck motor till you have some miles on the swap to make sure all is good.
Dave - - - -
 
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Old Jan 17, 2019 | 01:16 PM
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Originally Posted by Paul of the swamp
Don’t want to waste anyones time but I also don’t want to miss what maybe a good deal...
background: I am the second owner and this truck has 700,000 Kms. 200,000 on it’s second motor. I have owned it six years and it has always idled rough. Several mechanics have tried to tune it up but with no better results then my own tune ups, really just plugs, rotor, cap. Blows lots of carbon on start up after periods of no use. Wiring is a weak point. Anyways at the junk yard looking for some parts: coil,ignition box etc. And open up the hood on a grand Torino and there is a 351 2barrel looking real nice. Check the odometer and it is at 45,000! Interior mint rusty fenders and rockers probably out of some older owners garage. The landau? roof has no rips. Anyways my buddy thinks that this engine could be swapped with not too much trouble. He has experienced replacing engines, mostly ford six cylinders. They engines in question are both 351 c.i. A Windsor 4 barrel in my truck (rad hose to pump/ bell housing. five bolt valve covers) will be back to scrap yard to check that it is a winsdsor engine, look at oil pan and transmission type. So any thoughts or suggestions? Waiting for the return of my winter beater to head back to auto junkyard. Oh yeah they will take out and deliver engine 450 Canadian. Should I get the transmission too?
That could be 145,000 Miles. No way to know for sure. But do check wear on the brake pedal and accelerator they should look new with no almost no wear if it is 45,000 miles.
If the car is 74 or earlier it could be a 351C or a W If it is 75 or later it could be a 351M or a W Swapping in a Cleveland in place of the Windsor is pretty straightforward and will really only require some minor mods (exhaust and wire harness rad hoses) If it is a 351M it would be much much more work and swapping from a Windsor to an M is a step backwards. the M's really have no saving graces it's best feature is it can easily changed to a 400. The 351M was one Fords worst OHV engines second only to the 255. As for transmission it is likely is a an FMX in the Torino where as your truck will have the C6 the FMX again is a step backwards. If the trans case on the Torino is cast iron it is an FMX trans other wise it will be a C6 pretty sure they never put the C4 behind any 351. The trans in the Torino will use Type F Fluid not dexron so just be aware of that.
 
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Old Jan 17, 2019 | 02:09 PM
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351M and Cleveland will have 8 bolts holding the valve covers on. Your 351w should have 6 bolts. That is the quickest way to tell what it has. If it's not a 351w don't bother getting it.

Since it's a car engine it will have a front sump oil pan. You will need to swap your oil pan, pickup extension and one of the main cap bolts to a stud to support the oil pump extension. You can get all this from your engine. Double check your engine and see if the dipstick goes in the oil pan. If it does, you are ok. If it doesn't, look at the side of the block and see where the dipstick goes in. When you are looking at the junkyard engine, see if it has a port with a plug in it where the rear dipstick would go. If it doesn't, you are going to have to find a oil pan where the dipstick is in the pan. That's what I did when I put a 1978 351w out of a Cougar in my 1980 f150.

You will also be able to re-use your exhaust manifolds and y-pipe. You will probably need to change the thermostat housing so the truck upper radiator hose fits properly. And you will have to do some swapping to make the throttle cable hook up. If you end up having to swap your old carb onto the car engine, you may end up still having your rough idle problems you had before. Funny how that works sometimes.

P.S. While you are swapping oil pans I would stick my finger up under the front cover and see how much slop is in the timing chain. I think I would go ahead and plan on swapping that out, it probably has the plastic coated gear in it and needs to be changed.
 
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Old Jan 17, 2019 | 03:57 PM
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Did I read a post some where that the fuel pump bolts are different between the C & W motors?
One is up & down and the other is across front to back.
Dave ----
 
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Old Jan 17, 2019 | 04:07 PM
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Originally Posted by FuzzFace2
Did I read a post some where that the fuel pump bolts are different between the C & W motors?
One is up & down and the other is across front to back.
Dave ----
Yes, you did, the 335-series engines are the only ones to use vertically-oriented mounting bolts.

 
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Old Jan 17, 2019 | 05:02 PM
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Originally Posted by Franklin2
If it's not a 351w don't bother getting it..
Worst advice ever, if it is a 351C get it regardless.
You will be able to resell for more than you paid for it. Virgin (unbored) 351C cores fetch some good dollars nowadays. Guys are importing Aussie 351C's (the 351C stayed in production till the mid 80's in Oz) to get decent cores now.. And they needed modded to work with some of the N/A bits.
If it is a decent 351C I'd do the work to make it fit. It will drop right in and bolt up to the existing trans. You will need to modify the engine harness (maybe) and fit a rear sump pan and pick up both easily sourced and change the Y pipe..
Everything the W does the 351C does better. There was a reason the 351C was the standard Ford performance engine for over 2 decades it was only once decent 351C cores became harder to find did the Windsor start it's rise in popularity. Prior to the early nineties there was almost no performance gear for the Windsor it was all Cleveland based.
 
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Old Jan 17, 2019 | 05:44 PM
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Tim Meyer is making brand-new, aluminum Cleveland blocks.

https://www.tmeyerinc.com/product/tr...eveland-block/
 
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Old Jan 17, 2019 | 06:47 PM
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Thanks to all replies. It is definitely a cleavland. An H in the VIN tells me so plus bolt pattern and rad hose. Will now take a final look and try to discern if transmission is a c6. If not may pass on this Torino 351c. May well be 45,000 original miles as pedals show no wear. Arghh!
 
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Old Jan 17, 2019 | 07:36 PM
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If you want a non eventful swap, I still say stick with the 351w. The 351c was never offered in the 1980-up trucks. It is setup like the 289/302/351w as far as the bellhousing and motor mounts. It will drop right in. But I do not know what you are going to do about the exhaust system, it will have to be custom built. If the Torino exhaust manifolds will work in the truck, you will have to get a custom y-pipe made. If they do not work, you will have to come up with something else. Since the heads are the same as a 351m/400, and they did put the 351m/400 in the 1980-up trucks, you would think you could buy 351m/400 headers for a 1980 f150 and they would work. Not. I tried this on another project I had, the 351m/400 headers hit the bellhousing on the 351c.

Not sure what you would do about a oil pan. Most Ford vehicles the the 351c was used in had front sump oil pans. Someone may make one aftermarket, but you probably know aftermarket means money. The 351c was a legend in it's day, but it's day is long gone now, there are many other engines people are swapping in. I consider the the 351c a "nostalgic" engine for nostalgic type projects. You could certainly use it if you want to take the time to make it fit though.
 
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Old Jan 17, 2019 | 10:04 PM
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Originally Posted by Paul of the swamp
Thanks to all replies. It is definitely a Cleveland. An H in the VIN tells me so plus bolt pattern and rad hose.

Will now take a final look and try to discern if transmission is a C6. If not may pass on this Torino 351C. May well be 45,000 original miles as pedals show no wear. Arghh!
Do not believe the miles shown on the odometer, as it reads to 99999.9 then returns to ZERO!

I don't know the number of kilometers that rolls over to ZERO, but the same thing applies. Do not believe it!

Passenger Cars: VIN engine code H: 1969/79 351W 2V; 1970/74 351C 2V & 1975/79 351M that uses the same number of valve cover bolts and the fuel pump w/the 6 & 12 o'clock bolt pattern as 351C

See Mr. Fixit's post #6 to see what the pump looks like.

First digit of the 1960/80 Passenger Car VIN is the year. Torino's were available 1968/76, replaced by the LTD II (not an LTD!) in 1977.

The trans could be a C4, C6 or FMX

btw: No truck of any year sold in the US/Canada came w/a 351C .. 351W not installed in F150/350 & Bronco until 1981 .. 351M: Misc 1975/79 cars, 1977/79 F100/350, 1978/82 Bronco, 1980/82 F150/350.

The 351M is a smogged up turd, very prone to cracking cylinder heads. IMO: The only place it belongs, is the scrap yard.
 
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Old Jan 18, 2019 | 12:13 PM
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Well I bought the engine. Looks like it is a low mileage 351c in a 74 grand Torino . The trans seems to be aluminum so hopefully a c6. If not I will leave it behind as Iwill probably have to pay more for it to be included. Waiting for a good cold snap to start unbolting parts and wires. If it’s not at least minus ten doesn’t feel like work.
Thanks again all. Will add some to this as project progresses and as inevitable problems arise.
 
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Old Jan 18, 2019 | 01:31 PM
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Originally Posted by Paul of the swamp
Well I bought the engine. Looks like it is a low mileage 351c in a 74 grand Torino . The trans seems to be aluminum so hopefully a c6. If not I will leave it behind as Iwill probably have to pay more for it to be included. Waiting for a good cold snap to start unbolting parts and wires. If it’s not at least minus ten doesn’t feel like work.
Thanks again all. Will add some to this as project progresses and as inevitable problems arise.
Good score let us know when you get the engine in hand. Be sure to take all the accessories and brackets Ideally you just want to cut the rad hoses heater hoses PS lines the wire harness the ground strap fuel line to from frame to pump unbolt the starter and cut off the exhaust and pull the whole engine with carb air cleaner belts etc and be sure to take the starter. You want it as close to drop in as you can get. This will make the swap to your truck as easy as possible....
 
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Old Jan 18, 2019 | 09:37 PM
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Originally Posted by Paul of the swamp
Well I bought the engine. Looks like it is a low mileage 351c in a 74 grand Torino.

It's Gran Torino, not grand. Besides the pictured 2 dr H/T, there was a 4 door version.

Then there's the 2dr H/T Gran Torino Elite, which was the "lah-di-dah" version w/a vinyl roof and two small windows on each side of the roof.








 
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