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

Nov. 3, 2025

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

Chry 09-10 45-392 added replacement throttle body

Chry 09-21 all added runner volumes and port finish

Chry 84-85 135 99 added throttle body dimensions

GM 92-98 350 275-300 added replacement cylinder head casting.

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