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Thanks to all who responded to my query.I recently purchased a NOS 428 SCJ block still in the factory crate to replace the 390 in my 67 FB Mustang.(Not many left these days)
Unfortunately the sonic tests showed thin cylinder walls on #s 5, 7 & 8 at 90 degrees to the thrust face of the bore. The measurements are .085/.090/ .095 / " respectively. There appears to have been some minor core shift on the left bank during casting.
I have heard that Drag racers used to brace the cylinder walls using some type of cement or epoxy.
Does anyone know of this technique &/or the material used for bracing or any other way to strengthen the cylinder walls?
Any help would be appreciated, I don't want to have to scrap this block.
The intention is to build a 455 cid stroker producing around 530 HP so I need to be sure of the cylinder wall strength