RHS Cylinder Heads

Small Block Chevy RHS Heads:

Pro Action Small Block Chevy Aluminum RHS Heads are the perfect choice for a variety of performance engines, including street rod, muscle car, oval track and drag racing applications. These heads deliver significant gains in both power and torque for all Small Block Chevrolet applications - right out of the box. RHS also offers a 23˚ Pro Elite aluminum head for Small Block Chevy applications that is CNC-ported from the factory for precision accuracy and durability. The CNC-ported 228cc intake and 82cc exhaust runners optimize volume, atomization and velocity, while the 69cc combustion chambers are CNC-ported to relieve valve shrouding.

GM LS RHS Heads:

RHS Pro Elite 3.900" Bore LS7 CNC-Ported Cylinder Heads not only get the best LS rectangular port heads onto all GM LS 5.7L – 6.0L blocks, they also provide up to 100 bolt-on horsepower over stock and feature all the benefits of other RHS LS7 heads. These new Pro Elite LS RHS cylinder heads fit all LS applications down to the 3.900" bore, and utilize LS7 intake manifolds. Offered in CNC and P-Port (unfinished runner) versions, the heads’ intake ports are raised .220" from the stock location for a straight line of sight into the cylinder, and utilize the LS 6-bolt head design compatible with the RHS LS Race Block and GM LSX Block. They can also be used with OEM, 4-bolt blocks.

GM LS7 RHS Heads:

Pro Elite GM LS7 RHS Cylinder Heads are the aftermarket’s first high performance LS-style head to feature a raised intake runner design that fits both stock and aftermarket LS7 intake manifolds and valve train setups. They feature both the 4-bolt and the popular 6-bolt design, making them compatible with the RHS LS Race Blocks, GM LSX blocks, and OEM GM LS blocks.

Big Block Chevy RHS Heads:

Pro Action Big Block Chevrolet RHS Cylinder Heads provide you with more features, better flow numbers and superior "as cast" finished quality. Cylinder head engineers have designed the Pro Elite Big Block Chevy 24-degree CNC-ported RHS cylinder heads to maximize airflow and assure port-to-port consistency in runner shapes and sizes.

Small Block Ford RHS Heads:

RHS Cylinder Head Bolts:

RHS head bolt kits include enough bolts and washers to completely bolt a pair of cylinder heads onto your block. Dont waste time using OEM style torque-to-yield bolts. For leak free operation, RHS head bolts are the only way to go.

RHS Cylinder Head Studs:

RHS head bolt kits include enough bolts and washers to completely bolt a pair of cylinder heads onto your block. Dont waste time using OEM style torque-to-yield bolts. For leak free operation, RHS head bolts are the only way to go.

RHS Cylinder Head Assembly Kit:

When it comes to street performance and/or competitive racing, the horsepower capability of cylinder heads can be limited if not used with the right parts. Cylinder head studs and components can mean the difference between high performance durability and stress-related component failures. RHS tests all of its cylinder heads with premium COMP Cams components − giving you the optimal airflow combination for maximum engine performance. These exclusive RHS part kits give you the ideal combination of components for your cylinder head assembly and are proven to offer superior performance for your specific engine application.