NHRA Tech Department makes additions/corrections to the engine blue print specifications

The NHRA Technical Department recently added C5AF- BU & BT to the blueprint specifications for the 1967 Ford 427/425. And corrected a typo for the 1977 Ford 302 122-137 cylinder head and intake casting, D7OE-DC change to D7OE-DA, D7OE-AA change to D7OE-AC

66242