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Old 08-03-2016, 11:14 PM
black69 black69 is offline
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Default Re: 1970 455 W30 Dyno Results

to add to the value of blueprinting, there is a nice booklet that bill thomas did on taking apart the 65 L78 for a vette, and redid it to ideal specs and got 500HP out of it (vs the 425 spec).

75HP gain just by getting everything perfect. A little more than a 15% gain.
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