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Old 02-19-2018, 05:07 PM   #10
Billy Nees
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Default Re: Titanium Valves in SS

Quote:
Originally Posted by BBF67 View Post
From the 2018 NHRA rulebook====NHRA-accepted aftermarket cylinder-heads carry a horsepower penalty that is calculated to the weight of the vehicle and does
not change the class of the vehicle.
The BB Corvettes had an aluminum head option. Always been there and it stands by itself. The head that they use is a GM head OR a GM REPLACEMENT head not an AFTERMARKET head.
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