ID this motor

[RustyCJ]

So I go to the parts store for Cap, rotor, wires, plugs. Tell him its a 79 f150 351m. cap, rotor, and wires not even close to what I took off. The ebayer listed it as a 400 then told me its a 351M went I get there to pick it up. Has 8 bolts on the valve covers. So how can I tell what it is? Am I right in thinking its a 351m or did the parts guy make a mistake.

 

[RustyCJ]

A little more info. The cap he pulled off the shelve had a larger diameter and was shorter. the one thats on it now is taller and the connections are different. Maybe this is not a 79 motor?

 

[lenny1carl]

Gotta find the block stamping Rusty....no doubt if you have that info.

 

[RustyCJ]

above the starter on side of block?

 

[flareside_thunder]

should be...

 

[m78]

Would it be easier to just go to a different named parts store to see what they come up with ?
The NAPA here had the part #'s reversed for the oil seal on my transfer case
front #=back seal

 

[TexasNomad]

Looks like a FE to me from the water neck...

 

[flareside_thunder]

Looks like a FE to me from the water neck...

I was thinkin the water neck wasn't right for a 351M/400

 

[TexasNomad]

I really think its a FE engine, all most looks like a 360/390..

 

[RustyCJ]

Its a little hard to read. the first three are D 4 A cant make out the rest.

 

[nobodyspecial]

Here is a 360 FE to compare:

Doesnt look like an FE to me.

 

[flareside_thunder]

D4 just means 74...so it's a 1974 casting...and actually yea it does look like a 400

 

[RustyCJ]

Well the vin tag on the bed is from a 74 F100.

 

[flareside_thunder]

here's a 400m for comparison...

 

[TexasNomad]

I think its a 351W
351W 71-74 D4AE-DA
351W 75-77 D4AE-AA



http://raceabilene.com/kelly/hotrod/engine2.html

 

[RustyCJ]

Going by Ben's info here - http://www.fordtruckfanatics.com/forum/showthread.php?t=8918 the eight bolts on the valve cover put it in the 351m/400 category. I see alot of similarities in Ben's bronco pics, and the same with the pics that were just posted.

 

[TexasNomad]

D4 just means 74...so it's a 1974 casting...and actually yea it does look like a 400

Didn't they start using the 351M/400 in 77?

 

[surewhynot]

That is a 351m or 400.

The cap that they gave you will fit your distributor, but there is a spacer that goes under it. It also takes different wires. If you want the cap that you have now, get it for an earlier year.

 

[m78]

Valve cover bolts
8 = 351C , 351M , 400
7 = 429 , 460
6 = 289 , 302 , 351W
5 = 360 , 390 , 427 , 428

 

[RustyCJ]

That is a 351m or 400.

The cap that they gave you will fit your distributor, but there is a spacer that goes under it. It also takes different wires. If you want the cap that you have now, get it for an earlier year.

When you say spacer could it also be called an adapter? Because they did have that just called it something different