If I were including what's on the drawing board, 6. If no then 5. 2 were babbit-pounder 216's which didn't need a re-pour in the connecting rods, 1 was a mid forties 216 that still had dippers or slingers for the oiling and the most recent were 235 hydraulic lifter powerglide blocks, - non stock. Whats on the drawing board might be a 262. Or maybe not. I'm trying to source one. I also fool with the small Buick Inline 8 Fireball 248's and the MEL Y-block 368 from 56, 57,&58...and the Small Block Chevrolet.