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The engine compartment in Michael Eisenberg's '631/2 isn't full of flash, rather it's incredibly fast. Limited by Historic Trans-Am series rules, this old-school 289 relies on 13:1 compression, vintage iron GT40 heads, a flat tappet Engle cam, dual 415-cfm Holleys, and runs like a scalded dog in vintage competition. Call this one the little engine that could-try 485 horsepower at 7,600 rpm and 392 lb-ft of torque at 4,200 rpm. View Related Article
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