truck has a v eight and is going to need a water pump,and rear brake cylinder. How can i find out the motor size napa carrying 3 differnt sizes year is a 1972
 
May be an FE series engine (361; 391) different sizes but built on same block. I don't recall if 330 is FE or not. That should be most popular used that year.
 
360, 361 and 391 were actually FT engines. Look for a tag under the hood for emission compliance, that should have the engine size and emission compliance information in it. If it doesn't have one look for the tag that has the vin number, on newer stuff the vin number will tell you what engine it has if you decode the vin, on older stuff it's usually on the body tag or FMVSS compliance sticker/plate. Ford engines FE= Ford Edsel, when these engines were released their primary application was going to be in Ford and Edsel passenger cars. There was also an MEL (Mercury, Edsel Lincoln) motor an FT (Ford Truck) and a Super Duty V8 that was found in big trucks, some versions were over 500 cubic inches.
 
Look for a bright aluminum tag under the same bolt that mounts the ignition coil. That tag will have numbers telling engine size.
 
But the blocks were all the same , heads valves cam on the Med duty s were about it then ya got into the HD versons and this is where the cranks were drop forged and sodium valves governors four bbl carbs bigger water pumps . i use to work on them back in the late sixtys.
 
A couple of years ago, my brother needed extensive brake work done to his '71 F600. We started buying parts from NAPA, but each time we wanted something, we heard the parts man say "My computer shows that we only have ONE of these in the whole nation and it's sitting at a warehouse about 700 miles from here. We can get it, but it will cost you an extra $30 for the UPS shipping." After hearing that about four times, I finally got the hint that it was just his way of being competitive with the initial price, but screwing my brother over on the final price.
We then tried Autozoned, but they told us that they don't supply any parts for trucks over one ton. We then went to O'Reillys and couldn't have been happier. All parts were received overnight, WITH NO EXTRA CHARGES. The prices were lower than NAPA and were of very good quality. I'm not trying to put in a plug for O'Reilly's, it's just that they had no problem getting parts for this particular application.
Getting back to your truck, since this probably isn't a daily-driver truck, have you ever considered just taking the old water pump off and telling them to get you an exact replacement?
As far as your brakes, you may have to take the drum apart to get the exact size. If like my brother's truck, it seemed there were about five different sizes that Ford could have used for his application.
 
My understanding is the 360 was an FE engine, the 361 was an FT engine, the 390 an FE and 391 an FT, then there is a slew of other FT engines like the 330, 359, 389 and so on.
 
The blocks are the same with one small variation; the hole in the block where the distributor shaft goes is of a different inside diameter, with the light duty and passenger cars being smaller, So, the truck distributor will not fit into the FE block. The light duty distrbutors will fit into the FT blocks but not have the side support needed and will cause the distributor gear to wear rapidly.
Also, the oil pump key/driveshaft is a larger hex on the FTs and require the larger FT oil pump.


The crankshafts, both iron and steel, are the same with the exception of the snout being of a larger diameter on the FT and if the crank is to be used in an FE the snout diameter must be reduced to the same dismeter as the FE's and a new keyway cut. The FTs are internally balanced to a lower rpm and must be rebalanced for higher rpm usage. My understanding is all FT engines have steel cranks, SOME of the FE engines have steel cranks.


The rest is nearly all interchangable. The heads of most FTs and industrial engines have a dual manifold heat passage, small intake ports and valve rotators on the smallish valves. The pistons will usually have a dish or reduced piston pin to piston crown measurement to reduce compression.

The 330MD (medium duty) is very rare and probably not found in a F600 - especially stock.

The 330HD (heavy duty) is fairly common and I've seen it in several F600s - I believe it was the "base" v8 engine and the 361 was optional. A lot of state trucks had the 330 engine if they didn't have the old 300 I6 installed.
 
Years ago, Ford made bushings for the truck engine for an auto distributor. I guy I know used to build FE engines for custom cars. He found that a 391 with the right internal parts equals a 428 FE. He went to the local Ford dealer about the distributor problem and they had 1 box of bushings and he bought them all. Those bushings made him a lot of money.
 
Yep - I have the 360 FE out of my Grandpa's last pickup sitting in my garage. A someday project... when I find something to put it in...
 

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