Ok i found an all original '76 Ranchero 500,this person says they are the original owner and bought it as a left over out of California with the options from factory that someone had ordered then backed out of the sale so the owner bought it. it has a 400cid,auto trans,AC,POWER WINDOW,TACH and undercoating which makes sense why the body is in solid shape with the exception of the paint of course. I have been told that it has 189,000 + miles with oil changed every 3000 with "havoline gold" and the only major thing they had done was replace the water pump and a starter. I looked at the tags and was last legal in 1994 where the lady said she had parked it there and has sat there eversince she bought a fuel economy car. Now when i stopped by the owner was not around so i havent had a peek under the hood yet but i left a note on her door with my info and later have got this info from her and during our conversation she had said it had a 400 Cleveland in it. Does this sound right to you? I have heard of only 351C/M and 400M. Please give me a shout if this sounds right and is $1000 to much to pay for this vehicle even though it appears so far to be original. I booked it @ $4,400 on the low end and @$15,000 and change on the high end. Math wise i dont see why not but i dont want to buy worthless stock if you know what i mean. Thanks

 

no such animal. there is the 351 cleveland, the 351 modified, and the 400. they look kinda alike, so people will just tell you it is a cleveland engine.

at $1000, you would be stealing it if it is actually as clean as you say it is.
even if it does not run, it should not take that much to put back on the road.

 

i was thinking the same because i have a 351M in my '79 F-150 and have done a bit of research and havent come across any 400 cleveland just the "M" series on the 400 being the brother to the 351M. I am going to go see about a peek under the hood today so i am hopeful to find original emission stickers and what not to see if this is a California emmision car and the rest of the story matches the car with the VIN

 

The 400 is based on the 351 Windsor engine, not the Cleveland.

 

nope. the 351W is the big brother of the 221-260-289-302-351W family,
and the 400 is the big brother of the 351C-351M-400 family.

 

Sorry. You are correct. The 400 was a longer stroke 351C introduced in 1971.

The 351M came in 1974 and was a destroked 400. As is was still built in Cleveland, and the 351 had a high performance reputation, Ford also referred to the 351M as the 351 Cleveland.

 

Jschira is right, however, the blocks of a 351c and 400m(or 351m) are different, the 400 is wider but very similar in appearance. as far as cranks the 351c has smaller journals.
Heads will interchange but I don't beleive ther is a manafold to allow the 351 4v(or boss) heads to work on the 400. you can however turn down a 400m crank, resess the block, use 351m pistons and make a 400 boss cleveland

 

The 400 designation is just 400, -no "M". You can find more 351C/351M/400 information in the 335 series engine forum and this tech article:
https://www.ford-trucks.com/article/...00_Engine.html

 

The 351m and 400 are the same block, the 351 being destroked, that's why I use the m on the 400 description

 

The M is used as a convenience with the approximate displacement number to note the differences in three of the four engines Ford makes with the 4" bore and 3.5" stroke as in the 351W/351C/351M. The fourth engine with that bore/stroke was designated as the 352. The M is not used with the 400 designation, any more than the FE is used with the 352, 390, 428 or the W is used with the 289 or 302 etc. Sometimes the 335 series tall deck block is called the M-block but that name would not have been what was originally used since the 400 was designed long before the 351M was designed and placed in production. The 400 was just a 400 when produced (I drove the originals when they came out). Ford just uses the 335 series to designate the engine family with the 351C designation used to define the short deck version. They may have even planned other displacements in the series if the EPA had not changed things. That ~1" higher deck had to be planned for something other than to take up space. TMI builds a 434 CI version of the 335 series at the moment.

 

Torque is correct.

Just want to throw in something...

The 400 is in the Cleveland family and it does use 351C heads.

It is possible that Ford labeled the engine(sticker on Valve cover) as a 400C on the early engines...The later engines were labeled 351m/400..but obviuosly before that there was no 351M..

I only say this because I have seen a 302 "c" before (In a 1978 LTD)...and of course Ford "never" made a 302 "c"...officially..

 

as for 302c are you sure you wern't looking at a 302 boss? though they were well out of production by '78. it may also have been what was refered to as a clevor ( slang for a bogus boss) which was normally a 302 (though I have seen a 351 version) with the 351c 4v heads modified for the windsor water passages with a 302 boss intake( with spacers for the 351w) though for my money I would just do an early 351 clevland with the 4v heads as it will turn much higher and will still drop in where a windsor originally lived
I've never seen a 400 refered to as a clevland just as the 400 even though it is so similar to the 351 clevland right down to parts interchangibility, But remember the crank, rods etc of a 351c and 351m are not interchangeable, but you can take the 400 crank,rods,etc and put them into the 351m as the 351m and 400 are the same block.
you can put the 400 crank into a 351c with major machine work to both crank and block, but the only 1 I ever did that way was a major dissapointment for what it actually ended up doing. the original 351c 4v We tore apart was almost as much of a monster for a whole lot less coin

 

This IS my point Ford labeled a standard 302 Windsor in a 1978 LTD from the factory as a 302C... This is a 302 with the small plug heads...but the label on the valve cover said 302C. I believe they labeled it this way because it was produced at the Cleveland plant or atleast the heads were...
This is why I say that the early 400's may have been labeled "C" because they use Cleveland heads!

 

The early 400's were just designated 400. I worked on many of them.

 

I still agree with torque1st, I'd never seen a 400 listed as a cleveland, only as an m and then only after the introduction of the 351m
as far as heads, yes the 400 and cleveland heads do easily interchange, but there not the same part #'s, etc. Actual 351c heads can be identified by a small 2 or 4 on the exhaust side of the head on the front or rear just below the valve cover, the early 400's were blank and the 351m had an m. If you find a set of the #4 heads grab 'em and growl as those are the boss 351 4v heads with the huge valves and intake passages
as for a 302c, again it may have been built in the cleveland factory, But they are in no way shape or form a cleveland head unless it's a 302 boss, which was way out of production by '78. I do have a set of the heads of what your refering to here in my shop, casting # is D8OE the only special attribute they have stock is they are quench heads whereas the large plug heads are not, and they are of course windsor heads and not cleveland irregardless of where they were cast