if youve see my posts i am swapping my 77 f150 4x4 from 400 to 302

i was unaware until i went to buy headers for my truck that there is no such animal as a 302 4x4 f-150 in 1977 ... before i knew this i went to auto zone and requested motor mounts for this application any the dude working there
said that he had them in stock and i bought them for what i thought was a great price $9 now i have the clutch lined up and bellhouseing secured
and to no avail cannot get the mount studs to drop in to the frame mount
and are close but no cigar(about a bolt width and 1/2) ...it appears that the mount stud should be offset to the back about that much ...and looking at it
if the mounts did drop in the mount would not set onto the frame squarely
leaving part of the motor mount not against the frame mount ....this make some sense since there were no 4x4 w/ 302 ..maybe they gave me mounts for a 2x4 ...the stud hole in the frame mount is offset to the back .... i looked at the 400 mount and it is ofset to the back ..... i am not shure how i am gonna work this out , i dont think that any were made w/ 351w either
however i have seen these trucks w/ 351w and should have the same mount

 

Hey 77Effie

I have a 77 F-150 with a 302 in it.I know the motor is not the original as that was a 300.
Just saying that there are mounts for that set up, so check some more.

 

The engine mounts from the 300 should work since they are the same as the 302,

 

Not sure I'm picturing it based on your description, but since you went from a 400 to a 302, you obviously changed transmissions as well meaning your new tranny probably isn't exactly where the old one was...since you mentioned fore-aft issues, maybe moving the tranny crossmember back to another hole would get your motor into its mounts? I realize that transfer cases and drivelines are also then an issue with 4wd that we 2wd guys don't deal with, so I'm probably missing something huge...

Bob

 

I have a 70 302 in my 79 4x4 (originally a 300). The engine perches are different between the 300 and the 302. The 302 uses the same perches as the 351m/400 with no problem. Are you having trouble with the rubber motor mounts or the perches? Maybe you need a set of 70 2wd 302 rubber motor mounts and make sure they arent on backwards. Those are the ones I used. As for header you will either need to spend a day at the parts store trying on all sorts of headers to see what works or just use the good old manifolds. I went with the manifolds.

 

nope didnt change tranny , i stuck w/ the new process 435 (granny 4) i got a small block bellhouseing and new 11 inch flywheel w/ correct couterbalance and new clutch
i have it lined up and bolted to the motor... i just wonder if the frame mount for a 400/351c/351m is different than the windsor frame mounts

 

[hijack] So, if I have a '79 4x4 with a 351M, I can swap in a 302 without changing the metal stands on the frame? Is it the same for 2wd trucks? [/hijack]

 

The metal ones. Like I said, I have a 79 F-150 4x4 that originally had a 300 6cyl. I rebuilt a 302 from a 70 F-100 2wd. I knew I needed motor mount towers so I searched high and low for towers/perches for a 302 then I realised they were never invented. Someone from a junkyard told me the perches/towers are the same for a 302 and 351M/400. So I went to a junkyard and pulled a set off of a 79 Bronco. My frame already had holes in the proper location. So I mounted them up and with a little jiggling the 302 dropped right in. I would assume a 351W would do the same. Now 77effie used the tranny from his 351M/400 but had a 302 bellhousing so I dont know if that would affect anything. I would also assume the 2wd's are the same.

 

not all the bellhousing are exactly the same depth and you might be having that problem if you look at your tranny mount the pedastal the mount bolts to is bolted with 4 bolts onto the crossmember loosen those 4 bolts and the side mount for the Tcase and the entire unit will slide back more than enough to make up that little bit of difference in the mounts. If he gave you a stud type of mount that will bolt to the engine and they are that close then they are the correct ones your tranny just isn't set into the right position is all. Thats why Ford put those adjustable holes in that mount due to engine, tranny bellhousing differences.
BTW a 351C uses the same motor mounts as the 302 and 351W

 

the 351c motor mounts are completely different from what ive seen ....hopefully the frame mounts are the same

i looked ath the trans cross member and there is a very small range of adjustment
left (at least to the rear)

 

The clevelenad mounts are the same as 302, when I first built my current mud drag truck the frame I used had a 351M in it, and was a 77 F150, I was putting in a 351C, and used the motor mounts off my 302 out of my 86 F150. The truck also had a 4 spd, and I was switching to a C6 it almost droppped in but the frame holes were off by about 1/4-1/2" so I loosened the trans mount bolts letting the trans slide back that little bit and it dropped in.

 

from what i have found the motor mounts are different from windsor and clevland ....i have a 351c/351m and 400 and that all have different mounts than
the windsor mount and they bolt to the motor different , not trying to be a know it all just stateing what i see , advance auto parts ,orileys and auto zone all show different mounts for the two of these (however advance tried to sell
me a clevland mount ) i called them in advance to have them compare the
302 mount and the supposed 351 w mount they told me they were just alike
accept that the stud in the mount was offset to the rear .........................they were not the same

 

look again the 351c uses a different mount than the 351m/400 but uses the same mount as the windsor

 

Perhaps you can have the same engine with 2 different styles of mounts. For example car vrs. truck.

 

351C was never offered in trucks.