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Re: Big block engine mounting.
I used the pre-72 BB stands with the standard 3 hole (7/16-14 hole in the center) SB motor mounts like these. Use grade-8 7/16-14 bolts with over sized washers...That accomplished a couple of things...It puts the MK4 block in the same position as the Small Block and allows for some adjustment on the stands. I was pleasantly surprised that when I used that set up the SB fan shroud worked, and the 350THM bolted right back up to the cross member and drive shaft length was still good... https://www.cjponyparts.com/motor-mo...1972/p/MM2282/
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Michael of the clan Hill,
"Two Seventy Two's"
71 1-ton Dually 350 4-Speed
71 C/50 Grain Truck, 350 Split-Axle 4-Speed
02 3/4 ton Express
14 Indian Chief Vintage
1952 Ford 8N, "Only Ford Allowed On The Property" 
"Be American, Buy American" 
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