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I have a 1970 f250 where someone swapped in a 351w some time in the past. looks like they kept the old FE perches in… and wrong mounts with brackets bolted on to fit onto engine.
I recently acquired engine perches which I believe to be for a small block ford… I have a 351w that sat on FE perches with makeshift engine mounts.. I wanted to put the correct engine perches and mounts… now that I’m putting the passenger side perch it looks way off… and with the new engine mount(anchor 2329) looks even more off. I’m just test fitting for now… but it looks like it’s going to be sitting way too far back towards the transmission. Like 5 inches back from where it used to be if I use the new setup. Having the engine put back in on 2 days and have to go back with the old setup or figure this out between now and then.
do I have the wrong perch? Wrong engine mount? Is there a left and right for mounts.. from what I’ve read the mounts are the same left or right.
I have a 1970 f250 where someone swapped in a 351w some time in the past. looks like they kept the old FE perches in… and wrong mounts with brackets bolted on to fit onto engine.
I recently acquired engine perches which I believe to be for a small block ford… I have a 351w that sat on FE perches with makeshift engine mounts.. I wanted to put the correct engine perches and mounts… now that I’m putting the passenger side perch it looks way off… and with the new engine mount(anchor 2329) looks even more off. I’m just test fitting for now… but it looks like it’s going to be sitting way too far back towards the transmission. Like 5 inches back from where it used to be if I use the new setup. Having the engine put back in on 2 days and have to go back with the old setup or figure this out between now and then.
do I have the wrong perch? Wrong engine mount? Is there a left and right for mounts.. from what I’ve read the mounts are the same left or right.
any help appreciated. Thanks!
What are the engine supports (aka towers/stands/perches) from? Cars use different perches than F100/350, the 351W was first installed in trucks in 1981, but 1980's parts will not work on 1960's/70's trucks.
What some people do, is they use 302 perches, the 302 was first installed in F100 2WD's in late 1969.
All different engine perches are specific to right and left, but the rubber insulators for the 302 are the same right/left.
FE rubber insulators are right and left specific. I can't tell what the parts are from, there's no Ford ID number stamped on perches, but there may be on the insulators, post what you find.
Someone else may know from looking at the pic. There aren't that many people on FTE at this time in the morning.
When the east, south and mid-west wake up, you'll get more responses than just from people that live here in LA LA Land. I'm a 'night owl' that lives in Simi Valley.
Maybe these will help. These are pictures of 302 perches on a 73 F100 frame i acquired for front disc donor parts). My understanding is that these are the same for Bumpsides and Dentsides, and for 302 or 351w.
Maybe these will help. These are pictures of 302 perches on a 73 F100 frame i acquired for front disc donor parts). My understanding is that these are the same for Bumpsides and Dentsides, and for 302 or 351w.
thanks chirkware and numberdummy,
the pictures definitely help, they look a lot like the the ones I want to put in except mine are slight rounded at the bottom front and too right corner where the bolt holes go. Put the location and placement of holes looks the same as the ones I have that I want to put in.
the perches I acquired supposedly came off a 1977/79 2WD 351M/400 engine. I don’t know for certain but that’s what the guy thinks where I got them from.
Here are some pics I took last night with test fitting and also a pic of the mount that came out of the engine and the new one I want to put in.
so if I use the perches it already had in, which look like FE perches, along with new mounts then the engine will sit about 1.5-2in closer to transmission… I I use the small block perch and new mount then it sits like 5-6 inches more towards transmission…
this sounds like a big difference and will it even bolt up or will there be a engine/transmission/ driveshaft issue since I’m moving the engine more rear?
Using the factory 69-79 SBF perches and the proper 69-79 SBF F-100 motor mounts will put it into the proper position. Follow the Fordification guide for the proper bolt holes to use for an
SBF. Throw those other screwed up motor mounts away.
Using the factory 69-79 SBF perches and the proper 69-79 SBF F-100 motor mounts will put it into the proper position. Follow the Fordification guide for the proper bolt holes to use for an
SBF. Throw those other screwed up motor mounts away.
completely agree. Tough part is I don’t know how it affects drive train, can everything like the transmission, driveshaft, and exhaust just move back without altering?
I have a mechanic coming back tomorrow to drop engine back in and he didn’t want to deal with the engine sitting further back due to questions of everything lining up… I’m gonna try to convince him otherwise… but I guess we’ll see what happens in the morning.
Update: mechanic not able to come out today because of some light rain last night. This gives me a little time before he comes back in about 4 days.
he's not up for test fitting the new mounts with the proper small block perches/towers/stands since it might not let the transmission sit properly if pushed back.
I don't know anything about transmissions or driveshaft or anything else in the drive train, but I'm going to try and figure it out if i have a few days.
I read on another forum somewhere that someone had an issue with the "driveshaft" going to the transmission that needed to be cut because it was too long once the engine mounted properly, not sure if this is the same situation i have.
i'll try to get some pictures of transmission and driveshaft to get some more input.
I used small block ford engine perches. I used anchor 2329 mounts. I bolted on the perches to cross member, and mounts to engine, the engine will not sit… the engine needs to go towards back of truck about 1 1/2 to 2 inches… the transmission has no more room to go back, has only about 1/4 inch of space from yoke(?) to end of transmission tail shaft, it used to have about 2 inches of space.
so even if I go back the 1/4 inch it has left the engine mounts will not sit on perches. And there will be no space for transmission/yoke to “slide”….
the transmission is an fmx based on pan bolt pattern) that is not original to truck and the 351w is not original to truck…
-does anyone have any ideas on how to make this work?
-also not sure if my transmission crossmember is correct… does the flat part face the front or back of truck?
This was before putting the engine back in This is now with the engine in… also moving the crossmember bolts to the holes towards rear(there’s 2 holes). I also think the cross member is backwards? Like the flat part should face the back? Not sure… also the transmission mount is missing a bolt that I think the go through the … also the transmission mount is missing a bolt that I think goes through the triangular part there to secure it to crossmember. Where do I get one of those or what are the specs for it? Driver side perch… the mount misses it by a little maybe 2 in or less. Passenger side perch seems to miss it by a little more but I think the engine is just sitting at an angle.
Dump the driveshaft as it will need to be cut to fix this *******ization. The 302/Windsor never came with an FMX, only a C-4, which is shorter than an FMX. Shove everything back using the engine as your starting point. Use the photos from the Fordification site to align and drill new holes. Then cut the driveshaft to fit. That is the only way to get proper alignment.
Dump the driveshaft as it will need to be cut to fix this *******ization. The 302/Windsor never came with an FMX, only a C-4, which is shorter than an FMX. Shove everything back using the engine as your starting point. Use the photos from the Fordification site to align and drill new holes. Then cut the driveshaft to fit. That is the only way to get proper alignment.
I spoke with some transmission guys and they didn’t know anything about the truck, engine or mentioned the transmission but they basically said cut the driveshaft… so definitely see that as a good option.
Other options I’m thinking:
-swap to a different transmission, I mention this because I’ve never driven the truck and have no idea if the transmission is any good.
-put engine back on incorrect engine perches with incorrect mounts since that’s how it was sitting before
-pull out the drive shaft, (is that the little piece between the transmission and the longer shaft?) and how would I go about taking it out? Can I tow the truck to a transmission shop to do this without the engine being bolted down.
Update: currently leaning towards looking for a local rebuilt C4…. I’m hoping this will make everything line up right and also wouldn’t be such a bad idea to have a rebuilt transmission in there seeing as I have never driven the truck and don’t really know if it’s worth keeping the FMX transmission as it seems to be the root of my issues for things sitting where they’re supposed to be.
-should I be looking for a specific type of C4?
-should I be looking for maybe a C6?
-I tried looking up lengths of Fmx vs c4 vs c6 but couldn’t find any concrete answers.
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