250 Maverick Mounts

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Georgia200
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250 Maverick Mounts

Post #1 by Georgia200 » Mon Nov 05, 2018 6:23 am

If 250 engine mounts are used in a Mustang when installing a 250 doesnt that change the angle of the drivetrain?

It lowers the front of the engine, tilting the back of the engine up.

Did the Maverick use a different transmission crossmember that lowered the transmission to correct for the lower engine.

Im wondering if Maverick 250 mounts could be used in a Mustang with a 200 to gain clearance for the air cleaner when doing a carb swap.

The mounts that bolt to the engine would have to have 3/4in spacers on each side since the 200 is 1.5in narrower than the 250 at the mounting points. A front sump oil pan might also be needed.

Is this feasible?

frozenrabbit
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Re: 250 Maverick Mounts

Post #2 by frozenrabbit » Tue Nov 06, 2018 10:15 am

I used '63 style motor mounts to drop a 250 in my '63 Falcon, but....I relocated the frame mounts down about 1/2" and out 1/2". This drops the motor down plenty for hood clearance. Falcon frame rails are closer together than a Mustang. This was my clearance solution.

C4 tans adapter. I haven't measured pinion angles yet, but if needed, I plan on using angle wedges to correct the rear pinion angle.

If you really wedge it in there, there is room to run a mechanical fan. Radiator can also be moved to the outside of the radiator mount by slotting the top, slipping the radiator in front of the flange, and using 1/4" spacers. That moves the radiator forward about 1/2".

I cut and welded the firewall to fit a C4 bell, not a fan of the BFH clearance method.

Had 'some-guy' say the Maverick mounts are not the right mounts for a 250 swap. Asked what is the 'right' mount, and no reply, believe he was just some random internet arse-hole.

You'll have a little more room to work with in a Mustang.
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Georgia200
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Re: 250 Maverick Mounts

Post #3 by Georgia200 » Tue Nov 06, 2018 4:06 pm

A roundbody is much tighter for sure.

The Falcon handbook says to use 250 Maverick mounts when installing a 250 in a Mustang.

It doesnt mention the transmission mount.

frozenrabbit
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Re: 250 Maverick Mounts

Post #4 by frozenrabbit » Tue Nov 06, 2018 7:44 pm

On the early Falcons, the original Ford-O-Matic auto trans and 2.77 3-speed use a cantilever mount.

I don't think you would need a trans mount adapter like a Falcon does. They're available from a couple places, I made my own so I could move the engine back and not have to use a pusher fan.
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bubba22349
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Re: 250 Maverick Mounts

Post #5 by bubba22349 » Tue Nov 06, 2018 9:29 pm

Georgia200 wrote:If 250 engine mounts are used in a Mustang when installing a 250 doesnt that change the angle of the drivetrain?

It lowers the front of the engine, tilting the back of the engine up.

Did the Maverick use a different transmission crossmember that lowered the transmission to correct for the lower engine.

Im wondering if Maverick 250 mounts could be used in a Mustang with a 200 to gain clearance for the air cleaner when doing a carb swap.

The mounts that bolt to the engine would have to have 3/4in spacers on each side since the 200 is 1.5in narrower than the 250 at the mounting points. A front sump oil pan might also be needed.

Is this feasible?


The 250 six was introduced in 1969 also in 1969 the 250 was offered as an option in the Mustangs. The 1967 Mustang chassis is identical to a 1969 Mustang chassis so if you can find the 250 frame and correct engine mounts from a 1969 to 73 Mustang 250 six this would be a direct bolt in swap with factory parts in addistion to the Maverick 250 mounts. All 250 Fords six'es used the same front sump oil pan so it's no real problem finding a front sump pan. I don't know if the trans crossmembers are different but if you located a C4 crossmember from a 250 six Mustang it would have to be right. You could also mod your current one, just set the car at ride hight use a level on the carb mount of the intake with it level the trans will be at the right height. Yes this is definitely feasible! Good luck :thumbup: :nod:
A bad day Drag Racing is still better than a good day at work!

I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

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bubba22349
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Re: 250 Maverick Mounts

Post #6 by bubba22349 » Tue Nov 06, 2018 9:52 pm

Frozenrabbit that's some great fabricating work on fitting the 250 in the 63 Falcon! :thumbup: :nod:
A bad day Drag Racing is still better than a good day at work!

I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

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Econoline
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Re: 250 Maverick Mounts

Post #7 by Econoline » Tue Nov 06, 2018 9:56 pm

You could also check the driveline angles at the trans yoke and rear pinion face once it's installed. If its just off a degree or 3 you can put in axle shims to correct the alignment. Or replace the axle shims with the right ones if your car came with them, not sure if they came with wedges. I had to use 2* shims to correct the driveline angles on my van when I put a 250/aod in it. I ended up with a 15 3/4" driveshaft and I don't have vibration at any speed from the driveline. Equal but opposite trans/pinion angles is the important part if the carb flange looks relatively level.
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