Thread: HP Adjustments on NHRA.com
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Old 07-07-2014, 04:04 PM   #11
Nick Heath
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Default Re: HP Adjustments on NHRA.com
Quote:
Originally Posted by Paul Precht View Post
Whats up with the 70 GTX 6pak, it's listed twice, at 393 and 422 HP.
It looks like 393 is the factor with the factory head, 422 is the factor with the replacement Edelbrock head.
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