All the information I have read says this block is a 428 (C7ME-A). It measures 4.050, is this common? Are the cylinder walls thicker because it is only bored to a standard bore 390? Please excuse me if I posted this thread on the wrong site before. Has anyone out there come across this before? Thanks for any help, zrxlover.
Could be most anything, the casting # doesn't necessarily define the bore size a C7ME-A was cast for. A 428 block will usually have "428" inside the water jackets, visible through the freeze plug hole. Best to do the "drill bit test" in the water jackets- if a 13/64 or 14/64 drill bit will barely fit between the cylinders, chances are it was cast as a 4.13 bore 428. It a 16/64 or 17/64 bit goes thru, it's probably a 330FT, maybe a 352, or a 4.05 bore block, 360, 390, 410. If you're around an 8/64 bit, probably cast as a 427 There are block found occasionally that were bored less than their intended size, as in 428 cast bores only bored to 4.05, pretty rare, but nice to find- check in the water jackets, and don't step in the ********. A sonic test is always best, and core shift can happen on any block, any brand- cylinders might be real thick on one side, but thin on the other
I think it was a 360 with the C7ME-A casting on the block. The best thing I can do is sonic check it, thanks zrxlover. The casting # shows 428 4 valve, 428 P.I.
It sonic checked real good. .234'' is the thinnest cylinder. Thanks to All Posted using the Full Custom H.A.M.B. App!
I tried to find a 428 for my 57 Fairlane but ended up with a bored 352 with 390 crank rods and pistons. In other words a stock bore 390. I would have loved a 428 but it seems that they were bored so much when they were new that by now finding a buildable one would be a major gamble and I can't afford a down payment on a ham sandwich right now!
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