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Pro Elite™ Gen III Cylinder Heads

This is a discussion on Pro Elite™ Gen III Cylinder Heads within the Internal Engine forums, part of the LSx Technical Help Section category; ...

  1. #1
    Blown, Stroked, & Sprayed

    Ed Blown Vert's Avatar
    Join Date
    Aug 1999
    San Diego, Ca

    383 Procharged & N20 Vert

    Thumbs up Pro Elite™ Gen III Cylinder Heads

    New CNC-machined heads maximize flow, atomization and velocity to unlock LS1/LS6 performance potential

    Racing Head Service™ (RHS™) announces the arrival of two new GM Gen III (LS1/LS6) cylinder heads for high performance applications, available with either 210cc or 225cc intake runner port volumes. Best of all, the RHS™ design team has re-engineered the valve placement, rolling it over 4-degrees from stock and creating an 11-degree valve angle. The result is additional free drop spacing to accommodate high lift cams, therefore avoiding piston interference and dramatically increasing the volume, velocity and atomization of the intake port.

    As part of the Pro Elite™ series, the new RHS™ Gen III aluminum cylinder heads are fully CNC-machined for consistent quality and maximum CFM flow. Incorporating a 0.800-inch thick deck surface (twice the factory spec) increases the integrity of the deck surface, making it perfect for high cylinder head pressure applications and creating a combustion chamber that can be decked to 36cc. Steel inserts strengthen the stud boss area, while casting integrity is further improved via the triangulated exhaust and hardened steel head bolt washers. Raising the valve cover rail 0.500-inch allows for the creation of the raised roof port and allows aftermarket rocker systems to be used, without a valve cover spacer. For more information about the RHS™ Pro Elite™ Gen III Cylinder Heads or any other RHS™ product, call us at 1-877-776-4323, or visit us online at

  2. #2
    Jesus died to save you! Killer_bluebird's Avatar
    Join Date
    Aug 2005
    North Olmsted, OH

    Navy Blue Metallic
    2000 Camaro Z28

    These sound very interesting any pricing yet?

  3. #3
    Junior Member
    Join Date
    Mar 2006
    I'm from Memphis and have personally talked to John Williams at RHS.

    Back in January they had all of 1 of each type. At that time the heads were listed within Comp's own System as $1190 each bare.

    Note: They are the ETP head design with larger exhaust valves
    ETP's 225's are regulary 2.08 intake and 1.57 exhaust (unless you request the larger exhaust valve) where the RHS 225 is a 2.08 intake and 1.60 exhaust.

    They will be produced at the Australian Casting facility that Comp Cam's aquired when they bought RHS (well its parent company).

    And as of 2 weeks ago I couldn't get a set, cause they were not instock.
    So instead of get a set of 11 degree head I went with a Patriot's 2031 kit for $1199 at Summit...
    Thats 2 stage 2 LS6 heads with 2.05 / 1.57 valves assembled with .650 dual springs and titanium retains.... yeah lost business due to not being able to supply the product.

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