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

Dec. 9, 2025

 

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

GM 173 102-135 updated carburetor specifications 80-86

 

Chev 283 230-290 updated cylinder head CC’s 1958

 

Chev 283 170-315 updated camshaft lift specifications 58-61

 

Ford 138 264/264 added Mustang 2019

 

Ford 307 390/390 added Mustang 21-23







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