I think that's common on the biscuit-mounts, on account of the pedestals are angled. The K-frame side is slotted, IMO for that reason. Just loosen the engine, jack it up, and shift it. Shim if you need to, to keep the headers clear of stuff.
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On mine, I had to loosen the engine brackets too; there is quite a bit of adjustment possible.I used the carb pad for leveling...... after the front-end alignment was done.. I had to raise the engine with spacers too for various clearance optimization, even with new OEM-type mounts. During the 4-wheel alignment I discovered one saggy rear spring, and the rear-end was off to one side; so I had to remedy that first. I guess it goes without saying, that the tire-pressures were equalized.
When using the Milodon roadrace pan, clearance to my K was less that zero; it had to be notched. Torch took care of that in just seconds.
After all that, I still had to adjust my TTIs with a couple of well-placed blows.The tightest spot was at the pitman/idler arm. I swapped to the 73-up arms but they too still tagged the headers. Oh yeah, I had to adjust the transmission mount too. I had to use the 73-up cross member.
This, in a '68 Barracuda (an original slanty car), with a '70Duster340 K-member, and '71 360, using 340 engine brackets..
Whatever you do, allow plenty of clearance from the headers to the T-bars, to prevent rattles when the engine torques over. I tied the engine down with a Schumacher Torque-strap.
Yeah I know. I had the expectation that this install was gonna be short,sweet, and simple.
I think it was almost a week with; the initial fitting and K-member notching, the preliminary alignment check, the spring swap, cutting off the spring perches, centering the diff, setting the pinion angle, tacking in the new perchs, dropping the rear and final welding. Then the body leveling,the front-end preliminary-alignment/steering and steering-box swap/header adjustment, and bump-steer optimization......... and then the final engine levelling; phewph!
Of course all that put the air-cleaner into the hood......... dang AirGap,lol. Out came the jigsaw.
But I gotta tell ya; the end result was worth every minute of it.
