360 to 351W question. (1977 F150)

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Old 11-07-2008, 09:56 PM
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360 to 351W question. (1977 F150)

I've been reading around and getting some helpful information, but I just want to clarify.

From what I understand, the 360 engine perches will NOT work with my 351W. (Because they sit too high, and are above the crossmember instead of behind it?)

I've read that the 302 perches will work. I have a 2WD parts truck here with a 302 in it. Will I be able to use these in place of the 360 perches to house my 351W?

If not, I have 2 other trucks here with 351M's in them. Will these perches work for my 351W?

The 351 is currently installed in a truck that had a 300-6 in it. The previous owners moved the I6 perches back and dropped a 302 in. I removed that and the 351W bolted up fine...but seems to sit awkwardly.

So be sure I'm getting it right - I'm putting a 351W into a truck that has a 360. I have trucks with 300-6 perches, 302 perches and 351M perches. What do I need to do? :-)

Thanks!
 
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Old 11-08-2008, 02:36 AM
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Post 92 302 to 75 F150

I am near the same.
92 302, AOT 3PSD,OD into a 75 F150

Pulled the 390 C6...dropped in the 302 to take a view.

On the hunt for mounting accessories....Looks about 5-1/2" shorter than the older center to transmission...this would mean that the motor mounts are behind as you say.

Much appreciated to keep me posted should you have any progress.
 
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Old 11-08-2008, 02:44 AM
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Post Correction

AOD, not AOT

I do believe a 302 has enough HP for the weight, unless your going LG tires or 4WD...I have heard a 351/C6 is a slick fit.
 
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Old 11-08-2008, 10:16 AM
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FYI.. 302 and 351 use the same motor mounts in the later trucks, so if you have an earlier truck with a 302 in it the 351 would bolt right in.
 
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Old 11-08-2008, 10:23 AM
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From what I understand, the 300-6 perches are the same as the 360 perches, and are both placed above the crossmember rather than behind it. I currently have the 351W in a truck that had a 300-6...the perches were just moved back behind the crossmember. Problem is, the engine seems to sit higher than it's supposed to.

So when I build this new truck, putting the 351W in place of the 360, I'm sure it will fit if I move those 360 perches back, but I think I'll be in the same boat with the engine sitting to high. I'm hoping I can take either the 302 or 351M perches from other trucks and use those, putting the engine where it's supposed to be.

As far as the 302 HP/weight - the 351W is my baby. I wouldn't trade it for any other Ford motor, as they've been my pride and joy since I've toyed with vehicles. :-) It's currently coupled with a 4 speed. I'm also running 40" tires right now.

Unfortunately, I live in cold-weather-country, and I don't have the luxury of a garage. I'm collecting loads of information and keeping it here for reference, and will be doing a frame up resto starting next summer.
 
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Old 11-08-2008, 10:26 AM
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Originally Posted by Conanski
FYI.. 302 and 351 use the same motor mounts in the later trucks, so if you have an earlier truck with a 302 in it the 351 would bolt right in.
I was typing my post when you were typing this.

I do have a 78 with 302 perches, the engine removed. I just wanted to clarify whether or not those would work. (99% sure they will, but...)

Boy, that would make things smooth. haha
 
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Old 11-08-2008, 10:45 AM
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Yep.. I have had both motors(302 and 351w) in my '90 and I didn't have to touch the mounts at all.
 
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Old 11-08-2008, 10:55 AM
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Now...if only summer would come a bit quicker.
 
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Old 11-08-2008, 04:15 PM
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An update for ok2sendme:

I was outside for a while today getting one of the trucks running, and while out there I checked the perches.

302 perches from a 73-9 truck won't work. Since this generation never produced a 4X4 with a 302, the only option is the 2WD perches...and those are nowhere near right.

So to do it right, it looks like I'm going to have to use the 351M perches I have. I already know the 300-6/360/390/etc ones won't work (or will work, but the motor sits high and at an angle) so it leaves me with the 351M's.
 
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Old 11-10-2008, 11:32 AM
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302/351m/400 perches are all the same, so you're good to go.

Also, do you have an early early 77? because a 77 should have a 351m or 400 instead of 360 or 390...
 
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Old 11-10-2008, 11:13 PM
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Yep, I have two of them. Just gotta yank the motor to get the perches.

302 from the 73-79 won't work though. They never made a 4X4 w/a 302, and I have a 2WD that came original with a 302. The perches are worlds away from being even similar.
 
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Old 11-11-2008, 11:26 AM
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Yeah but they made a 4x4 with 351m/400, and a 302/351w will fit in the same perches.
 
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Old 11-11-2008, 07:25 PM
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Yeah, I know. I have one. (see sig)

That's why I said "Just gotta yank the motor to get the perches." :-)
 
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