RHS® introduces new cylinder heads that give Small Block Ford racers the benefits of professional CNC-porting – straight from the factory
Custom machine work and other horsepower-gaining cylinder head modifications can cost racers both time and money, which is why airflow engineers at RHS® decided to address the issue. Designed for Small Block Ford circle track and drag racing applications (289, 302 & 351 Windsor), the new Pro Elite™ 20-Degree Aluminum Heads feature CNC-ported intake and exhaust runners. The 62cc combustion chambers are also CNC-ported to relieve valve shrouding commonly found in “as cast” combustion chambers.
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To add up to 5 % more flow right out of the box, these Pro Elite™ heads also feature hardened multi-angle intake and radiused exhaust valve seats. And prior to CNC-porting, the heads are built using RHS® exclusive Clean Cast Technology™ to provide smoother port-to-chamber transitions. The thick deck surface allows angle milling and provides increased rigidity to improve head gasket retention in boosted and nitrous applications. In addition to these power-enabling features, the refined water jacket of these heads reduces “hot spots” in both the engine and the cylinder heads themselves.
The Pro Elite™ SBF heads offer a choice of two different intake runner sizes – 205cc or 221cc – both with 79cc exhaust runners. The 205cc option comes with 2.055” intake/1.600” exhaust valves, while the 221cc option uses larger 2.080” intake/1.625” exhaust valve diameters. Regardless of which option you choose, the RHS® Pro Elite™ SBF 20-Degree CNC-Ported Aluminum Cylinder Heads are designed from the latest in Ford-specific airflow technology for optimal volume, atomization and velocity, giving you the power advantage at the track. For more information about the RHS® Pro Elite™ SBF 20-Degree CNC-Ported Aluminum Cylinder Heads or any other RHS® product, call us toll-free at 1-877-776-4323, or visit us online at
www.racingheadservice.com.
Quick Summary
Product: RHS® Pro Elite™ SBF 20-Degree CNC-Ported Aluminum Cylinder Heads
Part Number: #35020 (205cc Runner, 2.055”/1.600 Valves); #35025 (221cc Runner, 2.080”/1.625” Valves)
Features & Benefits:
• 20-degree aluminum cylinder heads designed for Small Block Ford 289, 302 & 351W drag & circle track racing applications
• CNC-ported 205cc/221cc intake & 79cc exhaust runners
• Multi-angle intake & radiused exhaust seats for superior flow & increased horsepower
• CNC-ported combustion chamber moderates valve shrouding & improves airflow efficiency
• Thick deck surface allows angle milling & increased rigidity; improves head gasket retention
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