65 Barracuda Casting Numbers

In '65, 30 under the AB means it's a 2bbl. 31 means it's a 4bbl. In '66 they went with 31 as a 2bbl, and 32 as a 4bbl. Your block casting number is not correct for a '65 model. It's a later one.....'68-9 IIRC. Check the stamping on the front of the block on the driver's side just below the head gasket seam. What is stamped there?