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RIS photo gallery is now available online - including many of the older images.  Images from the Indy 500 and Allstate 400 at the Brickyard are among many new photos online.
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Author Topic: PR-RHS-New heads  (Read 42 times)
Michael F. Hollander
Editor, Racing Information Systems
Racing commentor
Posts: 2663

« on: August 27, 2007, 06:37:58 AM »

RHS™ Pro Action™ 24-Degree Big Block Chevrolet Cylinder Heads Outflow The Competition By Up To Five Percent

Available in aluminum or cast iron, bare or assembled styles to meet any need

RHS™ Pro Action™ 24-Degree Big Block Chevrolet Cylinder Heads are the right choice for serious performance applications such as street rods, muscle cars, drag racing, oval track racing and marine. Available in aluminum or cast iron, these cylinder heads are offered with 320cc or 360cc intake port runner volumes and a 119cc combustion chamber size - yielding exceptional out-of-the-box performance gains over other performance heads.

RHS™ Pro Action™ Big Block Chevy Heads outflow competitive aftermarket heads by up to five percent and offer superior “as cast” port and chamber finish quality, a great benefit regardless of whether or not you intend to further modify your heads. Important design features include extra thick deck surfaces, a highly efficient water-jacket design, radiused exhaust valve seats and hardened valve seats. In addition, the unique multi-angle inlet and radius exhaust valve seats outflow the competition by up to five percent. The improved valve guide design delivers tighter tolerance and extended durability.


For more information about the RHS™ Pro Action™ 24-Degree Big Block Chevrolet Cylinder Heads or any other RHS™ product, call us at 1-877-776-4323, or visit us online at

Posted by:

Michael F. Hollander, Editor
Racing Information Systems
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