Ol' Blue's magnum swap

Bobzilla said

Some early Magnum blocks do have the LA head oiling holes drilled in the block. Those early blocks can get LA heads installed if someone wanted to go that route. Not sure when the holes were no longer drilled, but I have seen several 1994 model trucks with those holes present.
Also, the engine mount bracket lugs on the Magnum blocks were not modified, they were basically carried over from LA production. The smaller 273 and 318 LA engines uaed one style, and the the 360 LA used a slightly different width on one side. I think 340 was same as 360.
Just thought I would add a little to this. Really like the car. Keep up the good work.

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When I tried to put on the LA style engine mount on the passenger side, I found on the block casting only one hole on the back making 3 total instead of 4. Unfortunately for me, the upper hole is there but not the lower hole. On the front of the block both holes are there, but the mount itself only has one hole. That left me with only the top two holes with bolts in them and a wobbly mount. What I had to do was cut the triangle with the bolt-hole off of the back of the mount and weld it to the front of the mount so it could bolt to the block with both front bolt holes. As far as the oil passages go, I think 94 would have been the last year that you would find them. If I'm not mistaken, they quit casting them and 93 and used the leftovers until 94.