I'm putting a few facts together and thinking my engine is too far forward in the chassis ('70 Duster with newly installed 440 using Schumacher mounts):

1) The idler arm does not quite fit into the recess of the #187 oil pan (the recess is about 3/4-inch too far forward for it to be correct).

2) The Pitman arm hits the Pro-Parts header (if the engine was 1/2-inch farther back, this would not happen).

3) When installing the transmission mount, the bolt holes in the tranny did not line up properly with the holes in the mount, and I had to make the slots in the mount longer (again by about 3/4-inch) to get the bolts in. Again, if the tranny (727) were about 3/4-inch farther back, the tranny mount would have aligned.

I didn't put all this together until yesterday. I had thought I was going to have to dent the headers and oil pan. But I had just enough of a glimmer of intelligence to overcome my neanderthal instincts.

As I said, I'm using Schumacher mounts. Schumacher emailed and said I could maybe get 1/4-inch adjustment to the rear using the slots in the brackets. But I need more than that. How much rearward movement could I expect if I loosened up the K-member bolts (supporting the engine, of course)and moved the whole K-member to the rear? Has anyone else had to do this?

Any chance you have the mounts on the wrong side of the engine? Don't remember if that was even possible or not. Other possibilities may be the wrong mounts (they changed in 73, you may have the 73+ mounts instead of the 67-72s), or maybe a different years K frame is in the car. I bought the whole kit for my 69 and had no problems.

I don't think installing the mounts on the wrong side of the car would make a difference. They are the smaller A-body-type ice-cream-sandwich mounts. There is only one part number right-to-left. And they're the mounts supplied by Schumacher with the brackets.

The K-frame is not original to the car. I'm not sure what it came out of, but it's supposedly a "reconditioned" unit for an A-body, A-engine. It came with the car.

The only other thing I can think of is the way the brackets bolt to the engine. Maybe they could be bolted to the rear of the cast-in bosses instead of the front of them. I don't know how I did it or if it can even be done wrong (from what I remember, they would only go on one way). I'm gong to check them when I get home.

Are the mounts on the front side of the ears on the block?

I checked the brackets, and they're on the rear of the bosses; however, it looks like that's the only way they'd go.

I'll see if I can take a couple of pictures to post.

Here are pics of the engine mounts and tranny mount.

Passenger's side (previous was driver's side)

Tranny mount

I have a 440 in my 71 Duster, I have a 68 A body BB K member from the factory. The driver's side is way forward as you can see and I have an 8 quart oil pan and the back of the K member is more rounded so the engine pan clears. You gotta have a special block with the 2 bolt holes in the front. As shown in the picture i will also post. The engine doesnt sit squarely in the bay, it sits about an inch and a half on the passenger side. the tranny mount bolts right up. The driveline is about an inch or so shorter on the duster than a dart.

here is the pic of the mount

I think I'd mount the trans where it would be if you had not slotted the trans mount then with the front suspended slightly see if you can ID if it's a kmember problem or the schumaker mounts. With the trans in the above correct OE location will the idler/headers clear?

My guess is still the brackets are mounted on the wrong side of the ears on the block. Thats about the distance you seem to off. I remember paying close attention to mine the last time I swapped them over to a different block.

After looking at the block, I don't think it's possible to install the brackets on the front of the bosses.

I'm attaching photos of the interference with the Pitman at the header and the Idler not fitting into the recess.

Next is idler interference at pan.

Send the mounts back and use a set of eephant ears, set the motor where and how high you want it I do But I use fender well headers also

The rubber isolaters are rotated 90 degrees from where they should be. The the little bump on the isolater? Theres a corresponding hole in the bracket for it to fit into.