250 swap into 67 Mustang
- Thread starter 66shelby
- Start date
8)
Looks very nice. Glad you like it.
Unusual motor mount setup
But that plate sure looks sturdy enough.
Looks very nice. Glad you like it.
Unusual motor mount setup
But that plate sure looks sturdy enough.
66shelby
Well-known member
The motor mounts had been my biggest concern. Seeing you are a racer I can only hope you see the same thing I did. My room mate and I were fortunate to have a 67 Mustang corpse to experiment with.
I had purchased a set of 69 Mustang 250 frame mounts thinking the motor would drop in. They were worse than the 200 mounts, the location moving to the firewall by almost 2". Chris eyeballed the V8 brackets angle and did a fab job with some 3/16 plate and angle, we reversed the frame mounts to get a lower installed height, and in it went.
Knowing the dimension from the motor mount pads to the bell housing are exactly the same, and the 69 and 67 engine bays on a Mustang are "The Same", why does it appear that the isolator must be a completely different animal? There are no listings for the 69 250 so I can't even prove the theory.
All things being equal, if the 69 used the same style bracket and isolator as the 200, it would move the trans mount brace, shorten the driveshaft, and change the shift linkage for this one motor. Makes no sense.
It was worth the trouble!
I had purchased a set of 69 Mustang 250 frame mounts thinking the motor would drop in. They were worse than the 200 mounts, the location moving to the firewall by almost 2". Chris eyeballed the V8 brackets angle and did a fab job with some 3/16 plate and angle, we reversed the frame mounts to get a lower installed height, and in it went.
Knowing the dimension from the motor mount pads to the bell housing are exactly the same, and the 69 and 67 engine bays on a Mustang are "The Same", why does it appear that the isolator must be a completely different animal? There are no listings for the 69 250 so I can't even prove the theory.
All things being equal, if the 69 used the same style bracket and isolator as the 200, it would move the trans mount brace, shorten the driveshaft, and change the shift linkage for this one motor. Makes no sense.
It was worth the trouble!
shmoozo
Famous Member
66shelby":34mou37w said:
I'm no expert, but I think I can cast some light on this question. The 1969/1970 Mustang platform was actually a little different than the 1967/1968 Mustang platform. That's why the 1969 engine mounts for the 250 didn't work when you tried to use them to fit the 250 into the 1967 engine compartment.
What you would have needed were mounts for putting a 250 into a 1967, but (yes, I hear you all saying this in unison
) the 250 wasn't introduced until 1969, so Ford never built mounts to put a 250 into a 1967 Mustang, or at least, not more than perhaps a few hand-made mounts for testing the 250 engine in what was then the current Mustang platform while the 250 was still in development.
66shelby
Well-known member
The problem here is that though I know a lot of Ford guys, nobody but this site has ever even heard about this swap. All the info must be put to the test, and I was very fortunate to have the fastback available to trial fit this thing.
We actually mocked up 3 radiators, 2 fans, 3 sets of motor and frame mounts, and an exhaust pipe!
We finally ended up using a single row cross flow rad out of a 79 Fairmont, and the fan and spacer off the 67 200. I had to fab mounts for the rad and shim? the factory hose to fit the inlet. The fan spacer had to have the center hole stretched to fit the 250 water pump.
By using the later model 79 motor I acquired a wicked aluminum bracket for the alternator and a new style P/S pump. This mounted both items on the drivers side of the engine freeing up space for the turbo. The transition to the old style p/s hose was a simple 90 flare to flare fitting. No leaks yet!!
The next step is to use the corpse, stick in the 200, and fab a turbo header. I am thinking if it will fit the 200 it should fit the 250. The starter is the main issue on any exhaust changes, and the 200 is by far a more prominent design, so make it to fit either.
We actually mocked up 3 radiators, 2 fans, 3 sets of motor and frame mounts, and an exhaust pipe!
We finally ended up using a single row cross flow rad out of a 79 Fairmont, and the fan and spacer off the 67 200. I had to fab mounts for the rad and shim? the factory hose to fit the inlet. The fan spacer had to have the center hole stretched to fit the 250 water pump.
By using the later model 79 motor I acquired a wicked aluminum bracket for the alternator and a new style P/S pump. This mounted both items on the drivers side of the engine freeing up space for the turbo. The transition to the old style p/s hose was a simple 90 flare to flare fitting. No leaks yet!!
The next step is to use the corpse, stick in the 200, and fab a turbo header. I am thinking if it will fit the 200 it should fit the 250. The starter is the main issue on any exhaust changes, and the 200 is by far a more prominent design, so make it to fit either.
66shelby
Well-known member
Thanks for that bit of advice. Voice of experience? I searched this site long and hard for such information.
One of the things I plan to look at are the Granada mounts that came with the motor. The late model (LOL) block has three mounting bosses and an extended bracket. It looks like one of the thru bolts holding the mount together may line up with the 69 frame mounts. I'll let you know.
That still won't adress the rad clearance issue, but may help with hood clearance. There was no room for anything but a pusher fan until I tried the Fairmont rad. The other plus was the factory style hoses fit right up. I only had to bush the inlet on the rad and that was easy.
One of the things I plan to look at are the Granada mounts that came with the motor. The late model (LOL) block has three mounting bosses and an extended bracket. It looks like one of the thru bolts holding the mount together may line up with the 69 frame mounts. I'll let you know.
That still won't adress the rad clearance issue, but may help with hood clearance. There was no room for anything but a pusher fan until I tried the Fairmont rad. The other plus was the factory style hoses fit right up. I only had to bush the inlet on the rad and that was easy.
A
Anonymous
Guest
Wierd.... The 250 crossflow dropped in my 68 with no problem using the 200 mounts.
66shelby
Well-known member
I am going to turn one of the outlets and create a split exhaust to drive a tangential split housing. By turning the outlets down I should be able to hug the block pretty tight. I still need to decide where to mount the turbo. Each area is divided by the clearance on the shock tower.
If you mount it to the rear, you run into issues with the starter and such. Mount it towards the front and you lose the pass side accessory area. I really want to put A/C on this car, and would like to find a Sanden compressor to see if it would fit.
If you mount it to the rear, you run into issues with the starter and such. Mount it towards the front and you lose the pass side accessory area. I really want to put A/C on this car, and would like to find a Sanden compressor to see if it would fit.
