[V8COOPMAN]

I have always gapped rings at about 0.004" per EACH 1" of bore, measured about one inch down from the deck, and with the ring SQUARED in the bore using the top of a piston. So, with a bore of about 3-1/16", your 0.013" gaps sounds about right. Remember, if using a file to fit the gaps, move the file in only ONE direction.......from OUTSIDE of ring toward INSIDE of ring. That way, ANY stray burrs will not rub the cylinder wall, even though there should never be any "stray" burrs. DD