351w, C, M - whats the difference

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Jul 3, 2002 | 10:41 PM

88B_RONC

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From: Fort Worth, TX

351w, C, M - whats the difference

I just bought a 73 bronco from a guy who said it had a rebuilt 351 in it and I can't remember what kind of 351 he said it was - I am pretty sure it is the windsor because I remember hearing that the other two models needed modifications to fit onto the C4 tranny that I have but I just want to make sure before I start buying stuff for it. Is there an easy way to tell difference between the different models?
Also I am looking for a good intake manifold and 4bbl carb to put on it. I don't need anything too high performance since all I do with it is take it offroad I just want one that won't give me too much trouble setting it up. I am almost sold on a getting a Q-jet for its offroad reputation, does anyone know which one I need and what the best intake is for it.
Thanks for any help

Jul 3, 2002 | 11:14 PM

Mil1ion

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351w, C, M - whats the difference

Quick ID!
On the Windsor the thermostat housing is on the front of the intake manifold.
On the M & C the housing attaches to the front of the block.

The other is to count the valve cover bolts.
8 on an M

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Jul 4, 2002 | 09:17 PM

daywalker

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351w, C, M - whats the difference

I they used C4's on the old 71 Mustangs in combo with the 302 or 351C 2v also. So a 351c and a c4 do work.

Daywalker

Jul 7, 2002 | 08:57 AM

oleblue70

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351w, C, M - whats the difference

>I they used C4's on the old 71 Mustangs in combo with the 302 or 351c 2v also. So a 351c and a c4 do work.

I think the FMX was behind those engines and years.Atleast thats all i've seen in the big stang and Cleveland cars.

A real shade tree way to tell,it drive it to the auto parts store and have them dig out valve cover gaskets for a W and a M.See which ones matches.
Also i think there are 14 bolts that hold a Windsor intake on.All a W is is a tall 302.

Jul 7, 2002 | 04:05 PM

Franklin2

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From: Virginia

351w, C, M - whats the difference

351w= 6 valve cover bolts

351c and 351m= 8 valve cover bolts

351c=flat casting around the dist hole

351m=raised casting ledge behind dist hole.

Jul 8, 2002 | 10:19 PM

88B_RONC

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From: Fort Worth, TX

351w, C, M - whats the difference

Thanks for the info. I do have one more question though...oleblue70 said that a 351w is basically a tall 302, well is there anyway to tell a 351w from a 302?