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Photo 07

Mdmp 1206 007 Dual Quads On A Small Block Twin Win Or Double Trouble Part 1

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Mdmp 1206 007 Dual Quads On A Small Block Twin Win Or Double Trouble Part 1
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5 After making several runs with the Cobra/Holley 670 combination, our best rear-wheel numbers were 243.9 hp at 6,000 rpm, and 252.5 lb-ft at 3,750. Factoring items mentioned in the main text, we figure this 331-inch engine was making 330-340 horses at the flywheel.

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