Silver Sleeper

iTrader: (7)

im going to use the UPR LS1 adapter plates with 4.6 mustang motor mounts...what im wondering is this: can i use my 5.0 K-member? would i have to elongate the mounting holes in the K member?

i was going to ask on corral.net but questions like that always turn into a pissing match on why someone would put a GM motor in a mustang..

Silver Sleeper

iTrader: (7)

disregard....picked up a 4.6 K-member

Revoroller

iTrader: (9)

In case you're still wondering, yes it can be done. I felt like UPRs adapter kit was a little much seeing as you can get 4.6 motor mounts on ebay for $30, so I made my own. 1/4" shim plate bolts to the block behind the motor mount and then roughly a 1/2 thick piece of rubber to absorb some vibrations (solid motor mounts). So pretty much I made my own swap mounts for roughly $35 (had to buy some hardware from Home Depot)

Silver Sleeper

iTrader: (7)

I am a UPR dealer so price isn't a concern. I picked up a 4.6 k member for 40 bucks. I have less than 140 in the k member and upr adapters and 4.6 motor mounts. I did consider the fact of making my own adapters

jvert

iTrader: (1)

Did some searching and I want to know what the op asked. Will the UPR LS1 Adapters and plates work with a 93 5.0L K-member?

Thanks

hy35f2t

Id like to know this as well.

MustangLS

iTrader: (5)

It "might" physically bolt into the 5.0 K-member but you are going to have some issues. The 5.0 mounts sit further forward on the K-member, they are at different angles from the 4.6 so the 4.6 mounts more than likely wouldn't sit flat.

usdmholden

I spent about half the day Saturday messing around with the 4.6L motor mounts and the stock 2.3L k-member (basically the same as a 5.0 k-member) and I believe I can definitively say no, it won't work. At least not with an fbody oil pan and a 2.3L power brake booster. I bought the motor mounts used for $30, so not really a big loss there.

I'm really not even sure that if I took the fbody oil pan off, if the mod motor mounts would sit on the 5.0 k-member before the bottom of the block hit the steering rack. The block may hit the oil pan before the mounts hit the k-member. There is at least three inches of space between the 2.3/5.0 k-member and 4.6L mounts when the oil pan hits the rack. The oil pan is only a couple inches tall where it hits.

Removing the mounts and just putting the engine where it seems to fit still necessitates alot of mods to either fbody oil pan or k-member.

Honestly I had planned to get the fbody LS1 to work on the stock k-member, but I don't see it happening without cutting and welding something (k-member or oil pan) and then severely hacking up my Accufab 1 7/8 headers. Right now time is worth more than money, so I think I'm just going to buy a tube 4.6L k-member kit that works with the fbody oil pan and call this part of the project done.

Silver Sleeper

iTrader: (7)

no, it will not work..the motor placement will be off and the cradle is wrong...this is why i went with the UPR 4.6 K member, LSX adapter plates and 4.6 solid motor mounts..

5.3Notch

I just did this exact swap, I tried using the 5.0 k member. But the "pads" that the mounts sit on are lower and farther apart than the 4.6 Kmember. I picked up a 97 year model Kmember (4.6 and 3.8 are all the same FYI, it's just the motor mounts that are different) and still had to do a little work to get it to fit. But it's in there now. I am using the fbody pan, it may work better with the CTSV pan.

5.3Notch

Pics of diffrent kmembers

5.3Notch

the red one is a 5.0, the black one is the "4.6" but actually out of a 6 banger, you can clearly see the diffrence

usdmholden

Those are some good pics. The 5.0/2.3 k-member would need to be modified in the same spot and the same way as shown in the picture of that 4.6 k-member.

gearhead302

I've seen people modify stock 5.0 mounts to work. anybody have any pictures of these mods.? I know MR hotrods mad adapter mounts but I'm personally not feeling $300 for motor mounts