NHRARacer.com - NHRA Tech Department makes updates to the engine blueprint specifications

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NHRA Tech Department makes updates to the engine blueprint specifications

Oct. 5, 2022

The NHRA Technical Department recently made changes to the blueprint specifications.

Chry 64-65 426 425 added footnote for valve size

Chry 1968 426 425 race Hemi added alternates cylinder heads

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