This is a purely hypothetical question at this point, but how difficult would it be to mount a slant six on a 69 A-body smallblock k-frame? I have a 225 with metal and rubber motor mounts for a 66 A-body, what sort of fabrication would need to be done? Is it even possible?

I know the best fix would be to swap to a slant six k-frame, but time wouldn't allow that right now.

Thanks!

I have never done it but you could most likely make it work by drilling some new holes in the K-frame to motor mount mounting pads.

It would be a good idea to mark the crankshaft centerline before you pull the V8 and then make sure the Slant's C/L ends-up in the same place.
DD

Thanks Doc!

Right now the car has no engine or trans, so I couldn't mark centerline. Looking on the Schumaker webpage in their "Identifying K-members" page, I see that the v-8 k-frame measures 20 inches between the tops of the motor mount perches and the slant six measures 22 1/4. So basically the v-8 motor mounts are placed 1 1/8 inches more inboard than the slant six perches.

I am thinking that I could fashion a steel plate and weld it to the top of each V-8 mount but that this might make the engine sit higher in the engine compartment.

Steel plate or boxed steel, even "U" channel, depending if you need to come up in height from the current location. Heck, I have seen people use pieces of hardwood to make the connection.

Pay attention to fastener access, I have done these type of "special brackets", spent a bunch of time making the pieces just to find that I could not get a nut or socket into the needed place.
DD