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NHRA Tech Department makes additions/corrections to the engine blueprint specifications

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