THE trick that Bob Glidden did to make that 79 Arrow fly in pro stock. Welded up the lifter holes then drill new ones to line up straight up to rocker, Chrysler made one of the new R blocks the same. Hemi has the same problem, only B-RB engines are correct. The block was designed for the poly head and Chrysler didn’t want to tool up another block to make the LA heads work right.
