i recently picked up a cherry 65 f100 and was just wanderin what engines would've came in these.it 's got a 240 or 300 now not shure what one yet mabe if someone has some info on how to tell the difference that would be helpful to its ben along time since i messed with old trucks but this one shure found a good home

 

There should be a warranty plate on the drivers door. Post all the information here and these fine folks will tell you a lot about your truck

 

i thought of that but ofcorse over the years someone changed the door and didnt save any of the info heck it says its an f350 never seen one of those with 5 lugs lol

 

wizzard...the VIN is also stamped on top of RH frame rail about inline with alternator with 2 lage stars at either end. The engine code is part of the VIN.

If its original, its most likely a 240 as i recall the other one used was the 170....


cs65

 

Ummm nope, haven't seen an F350 with a 5 lug either CS65 already pointed you in the other direction

 

Bert, The 240 I6 and 352 V8 were the engine choices used. I have been told that the 300 I6 was a option, but think the 240 was placed in 99.9% of the trucks with the 6s.

Unlike today the 6 was excepted as the engine of choice. That's because about 50 mph was the top speed driven in the trucks then. (Didn't say that they wouldn't go faster)

John

 

ok thanks thats what i thought its probably a240 my other65 has a352 in with a 4sp ill get the vin and post it mabe somone can decode it or piont me in the rite direction. this thing is to nice to part out.ya'l would'nt beleve it its was sittin in an old barn since 71 we pulled it out and i put a hot battery in it and fired it couldnt beleve it my self and ofcorse beein down hear in east tx ya no theres NO rust

 

Once you find your vin code the first letter after F10_ _ then serial # will determine the originial engine placement. (Vin Code) A = 240 (Vin Code) B = 300 (Vin code) D = 352 in 65 or 66 model & (Vin code) Y = 353 in a 67 model. Look also along engine block above the starter; should see engine block vin Something like C6AE- numbers; The (C) stands for 60's model the (6) for 1966 & the (A) for 240 if I'm not misstaking?
The engine code should help you determine the difference between a 300 & 240; At the local parts store I have had any probelm purchasing for either engine I own one of each type. They did make a 223 engine 1964 was the last year I believe; that's similiar to the 240/300 but the best way to tell them from a 240/300 is the intake system is on the drivers side verses 240/300 intake is on the passenger side of the engine compartment
Hope this helps..If I'm wrong theirs alot more knowledgeable folks here to jump on board...
Mitch

 

If its a six, and the intake is on the passenger side, then its a 240 or 300. Telling the difference can be done with 2 numbers only, both of which are practically impossible to see. One is on the underneath side of the head, where it hangs over the block a little, right behind the thermostat housing. You need a neck like a flexible conduit and a dental mirror to see it. Other is on the crank -- pull the oil pan to see that one.

Aside from the heads (slightly smaller combustion chamber in the 240), pistons, rods and crank, the 240 and 300 are identical. You probably have a 240. To know for sure, loosen all the smak plugs, remove one, disconnect the battery (or make darn sure in some manner than you cannot accidentally get a spark), and turn the engine over via the harmonic damper bolt. Using a piece of small dowel or copper wire (would recomend against steel), dropped down into the cylinder, make a reference mark on your dowel at the absolute top height. Now continue down till the piston is at the bottom. Make another mark.

4 inches -- 300, 3.24" = 240. The pistons are dished, so if you allow the rod to slide in the dish of the piston, your numbers may vary some. And the spark plug hole is a little angled. The numbers are likely to be more like 3.5 and 4.25. But you will get your answer.

The 240 is a venerable old engine. I am slowly trying to see just what kind of mileage I can squeek out of it. The 300 has a reputation for good longevity and torque, but it was never a good performer in terms of fuel consumption. I currently am at about 16 mph on the highway with my 240. I think I may go to the offenhauser DP intake and a 390 cfm holley 4 bbl and see if the mileage gets better. Using the EFI exhaust manifolds (from the fuelie 300s 87-96 years) you get almost the same effect as a set of headers.

If you decide to see what you can do with the old 240/300, give the inline forum here a peek. www.fordsix.com has lots of info too. It seems that most guys gravitate to V8 power. In which case, IMHO, you should just get it over with and go 460. Readily available, suprisingly economical if driven carefully, yet full of everything a truck ever wanted if you need it.

later.....