When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
What's going on all? I recently purchased a 73 f100 and wanted to ask a question. The guy that sold me this truck said it was a cab swap and to be honest with you i do not recall the engine size. i have a title and vin but i could not find anything on the motor itself as i want to be sure what motor it is. i have to buy some parts and don't even know what model to put in...i know it's pretty irresponsible of me not to know but i guess i have to find out somehow. ok well any help would be great, thanks in advance.
depends on what you are looking for. if your looking for driveline pieces, go by the frame. if the cab swap only involved the sheetmetal, then you can go by the vin for everything. by involving only the sheetmetal, i mean if they switched all of the stuff from the old cab into the new cab. it really just depends on what you are looking for.
Engine Identification (rev):
======================
351C/M/400 335 series: 8 bolts in rectangular valve covers. Timing chain housing is part of block. Thermostat housing on block. Exhaust bolt holes diagonal.
351M/400 335 series: intake is 12.7" wide the 351C is narrow.
351W/302/5.0L 6 bolts on trapezoidal valve covers. Thermostat housing on intake. Exhaust bolt holes horizontal.
429/460 385 series: 7 bolts in rectangular valve cover
352/360/390/427/428 FE series: Intake goes under valve covers.
-There are other indicators but these are enough to distinguish engine families.
ok well you're right I wasn't very specific about my truck. Here's the thing. If I understand correctly the previous owner told me that the guy he got it from said it was originally a 71 F100. Apparently it was in an accident and the owner switched out the cab. What I was curious about is if the original engine and tranny were in there and pretty much how to identify them. He also told me that the guy he got it from put a 4x4 oil pan in it. Why would he do that? The things I am looking for are: It looks like I am leaking oil from one of my valve cover gaskets...easy enough fix. I see some oil dripping almost from what looks like the oil pan bolt...can't be certain though. I think I have a radiator plug leak...pretty slow but I would rather not have any leaks. Also when I turn the key the fuel pump is ticking like a mother! So I just assumed I had to get that replaced. Other than that she is a good looking truck and with the exception of getting a good alignment I think she'll run for sometime. Thanks for the replies. I will post the bolt numbers and vin as sonn as i get off today.
ok today i started looking for identifying numbers. I have the vin obviously. It is or starts out as F10G. Meaning it is a 302-2v. The only problem is I do not think I can go by that as there is an air breather on it that says 400-2v. I also could not for the life of me read the damn numbers on the side of the block. They look so old and are worn down I just gave up, must have been funny for my neighbors as I was pretty much inside the engine bay cussing my *** off. I am going to read the manual as I do not know where the intake manifold is so maybe I can see a number there. I know where the carb is, is it under the carb? I do however have some nice leaks! transmission gasket i think, oil pan maybe or just the nut, some clear fluid..maybe brake, or power steering. I did wipe it all down so it will be easier to identify.
I almost forgot, 8 bolts on the valve covers, rectangular.
Last edited by anthonyglamis; Oct 25, 2006 at 04:14 PM.
Reason: 8 bolts on the valve covers
The intake manifold is what the carb is connected to. Easy to identify. Can you create a gallery and post some photos of what you have. The fellas here will be able to id it in a second.
Sorry I don't live in AZ, currently in D.C. I received an e-mail from the guy I bought this truck from and it was suprised at the info. Apparently the truck has a 400cid or 6.6 liter. They didn't originally come in '73. He told me he usually just says the truck is a '77 because that was the year of the LTD it came out of and the f150's had them that year also. So with that said I guess I can go looking for gaskets and parts I need. Interesting, I still wonder about other parts that are not directly related to the motor like suspension, I would like to replace that for sure. Thanks for all your input guys and thanks for trying to help. I definetly see this as a great site to get this truck back to form.
So, aside from a couple of digits in the casting numbers the difference between the 351M and 400 is internal and both take the same gaskets etc.
The only parts different are the Crankshaft,Pistons,C.Rods
To verify the difference one must measure the stroke of the piston.
Sorry I could not edit my post. My buddy took a look at the truck and I have a clicking coming from the fuel pump(which is close to the tank). He said that obviously the previous owner put a electrical fuel pump in as the mechanical one was in the front of the engine or supposed to be. How the heck do I order another...or should I just order a mechanical one and try to run new lines? man why couldn't the just leave the truck alone!? haha