Spun mine in the '69 to the 6800 chip on the dyno several times and made 431rwhp with a stock GM driveshaft,never worried about it before,maybe I should?
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'67 Buick Skylark GS400 Funny Car "Ingenue"...World's only Buick-powered Buick Funny Car/Aug '10 Hot Rod featured car World's only Buick-powered Buick Funny Car!