March 18, 2024
The NHRA Technical Department recently made changes to the blueprint specifications.
Chev 65 396/325 corrected intake castings numbers
Chev 67-68 396/325 corrected intake castings numbers
Chev 68 396/350 corrected intake casting numbers
Chev 66-69 427/385-390 corrected intake castings numbers
Add 3931067 to the above intake numbers that were using the 3983948 Q Jet manifold
Ford 2011-2012 302 corrected bore size from 3.629 to 3.631
Ford 2015 – 2017 Added 302 Mustang Coupe 2 Dr GT