How many of you would buy an aftermarket block in low deck height. Aluminum, cast iron, up to 4.500 bore size.

MOPARMAGA said

I have a standard bore 400 mock up block here at home that's cracked in the main saddle.
I was going to bore some holes in it to see what I can possibly get done. I do think 4.500 is too big for a stock casting. I am a engine machinist so atleast I won't have to worry about those costs.
I have also been thinking about Ford 460 sleeves and running a 4.402 .060 over 400 piston, that's a more reasonable bore size

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Excellent but one qualifier would be the remaining parent wall cross-section after it gets machined. A good sleeve can be .080 wall. All this said there weren't good rings available in 4.4 until about 4.430ish last I checked. I'll take a good ringed 4,375ish bore with the usual tricks over a 1/16" ring 4.420 bore any day. Another sleeve possibility is if you could thread the block and sleeve. Depending on the ability to machine and create this 'superblock' It'd be a good idea to offset the mains for a 9/16 stud and ring dowel both fasteners for a custom alloy cap. After the lifter bores were properly bushed and indexed should be a solid foundation for 900HP...