Not Ranked
My 66 passenger car 428 block has a large inverted "A" cast on the back of the block on the driver's side. I have been told that this is one of the identifiers for a 428. The crank and bore completed the picture but the "A" told us that we were probably looking at a 428 in the first place.
There are apparently a lot of 428's out there made from punched out 390's. A sonic check will verify integrity put I hear that they are sometimes a bear to keep cool even if the wall thickness is not too bad. Now if you bought a block and you were told it was a 428 and it isn't, that is a different story. A 37 year old engine that only needs a hone and the bore checks out to be standard 428????
Keep checking....
Gary
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