Has anyone done a swap from a 318 poly to a 318 magnum? What is the easiest way? Swap out the K-member? Or does someone have a mount conversion kit? My friend bought my wrecked 95 ram van for the motor and trans. He wants to swap it into his polara. Harness,computer the whole works. He owns a service garage where I live. Has a good business working on classics and muscle cars.Any info would help.

I can't say for sure on the poly, but I've installed a 318 Magnum in the G/Friends 55 Desoto that had a 291 Hemi (gone) using the early Hemis motor mounts & brackets.

I had to modify the R/S mount bracket and add some metal to have a place to put one of the bolts. (the front lower one).
The L/S was a bolt on.

I had done a mock up with a late 60's 318 and the mounts bolted right on, but the Magnum engines have one of the 4 bosses machined off the block. (why I had to add metal to use the other boss).

R/S pic.


L/S pic.

There's a good chance it'll be a similar thing for you.

the Magnum still has the same ears on the block as the LA engines do(though they don't use them anymore in trucks other than maybe a B van, they are there) with the right oilpan it should bolt right in!
On that oilpan; when they went to the Magnum they changed the 318 to accept the same style oilpan as the 360; LA OR Magnum. so get a 360 pan and pickup and you should be good.
Had to do the same to put a magnum into my Volare.

Use a 360 pan as was stated, the mounts from the poly will work, add a small piece of metal to one of the steel brackets and you're all set.

I put a 94 magnum from a cherokee in our 62 Fury.