I got this project wrapped up. I copied
@JBrian 's scheme. Had to chop the factory mount off the timing cover to get access to the hole in the block. (I'll clean up my cut when I pull the cover)
I ordered the A/C compressor from Classic Auto Air (Sanden 7176)
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Turns out the threaded hole in the block is 3/8" NC. I had to drill out the mount in the compressor for a 3/8" bolt then it bolted right up and was actually in line with the pulleys!
After the compressor was bolted up, I checked the clocking with a spare K-frame, then started making templates.
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Sketched it up in CAD, did some more fit checks and sent it to sendcutsend.com
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And here it is all painted and installed. I used some spacers from McMaster-Carr to go between the timing cover and the bracket and also at the PS pump.
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The factory belt almost fits, but needs another 1/2" or so. JBrian is showing a Gates K060825 on his, so I'll try that one first.
To review: This is a 2010 5.7L car engine using the TTI conversion mounts on a stock 67 K-frame.
I'll have more details on my blog later. If anyone is interested in purchasing some brackets, let me know. If there's enough interest, I could do a run of them.