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Comp Cams

Cylinder Head, RHS, Pro Action, 180CC, SBC, Flat, 72CC Cham., Aluminum, An. Plug

Vehicle Specific fits 4 models
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Part# RHS4201
You Save $80.96
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Ships direct from manufacturer

Available in wide variety of sizes

Using Clean Cast Technology which eliminates casting flaws, RHS aluminum cylinder heads are manufactured to outflow the competition right out of the box! The Pro Action cylinder head is the cornerstone of the RHS line and are ideal for hot rods, muscle cars and drag racing. Available in a wide variety of runner sizes from 180cc to 235cc and combustion chambers in 64cc and 72cc sizes with either straight or angled spark plug configurations. Each fully assembled head includes valves, springs, locks, retainers, seals, studs and guideplates. You are sure to make excellent horsepower and torque in your small block Chevrolet with a set of these RHS Pro Action cylinder heads.


  • NOTE: Not CARB Legal.
  • SHIP NOTE: This item is SPECIAL ORDER and will be drop-shipped from the manufacturer.
WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

Vehicle Fitment

Make & Model Year Range Application Details
Chevrolet Chevelle 64-77 flat tappet, 72cc, angled plug
Chevrolet El Camino 64-88 flat tappet, 72cc, angled plug
Chevrolet Malibu 78-83 flat tappet, 72cc, angled plug
Chevrolet Monte Carlo 70-88 flat tappet, 72cc, angled plug
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Cylinder Head, RHS, Pro Action, 180CC, SBC, Flat, 72CC Cham., Aluminum, An. Plug
Comp Cams Cylinder Head, RHS, Pro Action, 180CC, SBC, Flat, 72CC Cham., Aluminum, An. Plug