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LouisJeffery · 06-19-2007, 03:05 PM

I am helping a friend with a 1973 340 mopar. The factory 340 camshaft spec is .429 intake and .444 exhaust. The NHRA blueprint spec is .462 and .473. Does anyone know if this is a typo or are we missing something? We hate to have a cam made that is incorrect. We compared a simular vintage Chevrolet 350 and the spec of .390 .410 is the same both factory and NHRA.

06-19-2007, 03:05 PM	#1
LouisJeffery Junior Member Join Date: Dec 2004 Location: Detroit Posts: 53 Likes: 0 Liked 0 Times in 0 Posts	340 cam specs? I am helping a friend with a 1973 340 mopar. The factory 340 camshaft spec is .429 intake and .444 exhaust. The NHRA blueprint spec is .462 and .473. Does anyone know if this is a typo or are we missing something? We hate to have a cam made that is incorrect. We compared a simular vintage Chevrolet 350 and the spec of .390 .410 is the same both factory and NHRA. __________________ Louis Jeffery 3225 STK