1969 Road Runner Project, Part IV
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The cylinder head for the 542ci Holley Roadrunner would be Indy's 440SR head. Using 906 castings as a baseline, the 440SR is Indy's first step in terms of a performance gain with its extensive line of Mopar-specific B/RB cylinder heads. Designated a street/strip head, the 440SR is the closest thing to a stock replacement that Indy offers. It doesn't require an offset rocker arm--any 906 style rocker will work, as will any intake manifold in the aftermarket. View Related Article
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