351M or 400?
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351M or 400?
I've got a small delemma here..
I bought this 78 F150 4x4, and was told that it had a 351M. The valve cover says it's a 400, but then again it's also got the small diameter distributor cap on it.
My question is:
Is there any easy way to figure out if it displaces 351 or 400 without pulling a piston out or measuring he crank? Are the vacuum readings different or something simple like that?
Also, do you guys know of anybody that has aftermarket (re: good) heads for these things? I love TFS Twisted Wedge heads for the Windsor, but they don't make em for this. Port the stock heads?
Thanks guys, I've learned ALOT about my favorite trucks (73-79 F series) by reading through this entire site and message board!
Matt
I bought this 78 F150 4x4, and was told that it had a 351M. The valve cover says it's a 400, but then again it's also got the small diameter distributor cap on it.
My question is:
Is there any easy way to figure out if it displaces 351 or 400 without pulling a piston out or measuring he crank? Are the vacuum readings different or something simple like that?
Also, do you guys know of anybody that has aftermarket (re: good) heads for these things? I love TFS Twisted Wedge heads for the Windsor, but they don't make em for this. Port the stock heads?
Thanks guys, I've learned ALOT about my favorite trucks (73-79 F series) by reading through this entire site and message board!
Matt
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Joined: Jun 1999
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351M or 400?
Start by looking back at the valve cover sticker.You should see a referance to the displacement in liters such as 5.8l or 6.6l.Some decals I have looked at before had 351M/400 as the engine family,but the liter size is what determined the actual engine.On the same decal,you will read a statement that says the engine confirms to 19?? model year emission standards,there's your year model.
Phillip
Phillip
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351M or 400?
Well, I found all that already. It says 351M/400 engine group, and the displacement is 400ci. (6.6 L)
But, as we all should know, the 351M/400 covers are interchangable..as well as the distributor.. Assuming that the guy that had this before me did some of his own work (took out the second mid-ship fuel tank, put in the high-output heater system, custom 4-row radiator, changed the doors, painted it a few times[interior is red, and underneath that is blue, as well as the outside])
Which is why I'm figuring that this isn't the original engine.
Oh yea, does anybody know the model of transfer case this is suppose to have? I thought 78-79 had the same but mine doesn't have the same shift-pattern as my parent's old 79 did.
But, as we all should know, the 351M/400 covers are interchangable..as well as the distributor.. Assuming that the guy that had this before me did some of his own work (took out the second mid-ship fuel tank, put in the high-output heater system, custom 4-row radiator, changed the doors, painted it a few times[interior is red, and underneath that is blue, as well as the outside])
Which is why I'm figuring that this isn't the original engine.
Oh yea, does anybody know the model of transfer case this is suppose to have? I thought 78-79 had the same but mine doesn't have the same shift-pattern as my parent's old 79 did.
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Senior User
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351M or 400?
Here's my VIN:
F14SCAH2006
Also, the VIN on the truck and the VIN on the doors aren't the same..Dont'cha just love buying really thrashed old trucks? At least I have a solid mechanical base..
Matt
F14SCAH2006
Also, the VIN on the truck and the VIN on the doors aren't the same..Dont'cha just love buying really thrashed old trucks? At least I have a solid mechanical base..
Matt
