Proflow Cylinder Head & Roller Rocker Kit, SB Chev SuperMax 220

Proflow does not sacrifice quality for a low price--you get both with our aluminium cylinder heads. The lightweight heads are cast from A-356 aluminium alloy with a large choice of Engine, for SB & BB Chevrolet, LS Chev Holden Ford SB 289-351W, 302,351 Cleveland 2V & 3V & BB FE, and Chrysler SB & BB, phosphorous bronze valve guides, and ductile iron valve seats for use with unleaded gas. They're also end-milled and drilled for accessories. The fully assembled heads have stainless steel valves, High Performance valve springs, 7 degree valve locks, rocker arm studs, and guideplates. These heads are capable of producing over 600 HP straight out of the box!

Proflow's Pro Series 2024 rocker arms are designed for use in street/strip and track applications. This series of 2024 extruded billet aluminum, CNC-machined rockers are precision-finished with friction-reducing ground needle and cage bearings for superior performance and quiet operation. They're available for a wide array of engine applications, These Pro Series rocker arms are precision-engineered to withstand rigorous racing conditions. Order the set designed to fit your engine application.

  • Proflow Large Body Rockers increase engine power, enhance valve train stability & improve oiling
  • New extrusion based on improvements developed through FEA analysis, resulting in an even stronger, stiffer body without compromising mass
  • Contoured top give the rockers the best strength to weight ratio possible
  • Spiral lock type clips replace retaining Circlips
Specifications & Features:  
   
   
Material A356 Aluminum
Intake Port Volume 220cc
Intake seat size 2.08
Exhaust seat size 1.6
Intake Port Dimension 2.200" H x 1.310" W x 3/8 Radius
Intake Port Location Stock
Exhaust Port Volume 80cc
Exhaust Port Dimension 1.420" H x 1.545" W
Exhaust Port Location 0.250" Raised
Combustion Chamber Size 65cc or 72cc
Valve Cover Bolt Pattern Perimeter Bolt
Valve Angle 23°
Valve Spring Pocket Diameter 1.580" O.D
Max Valve Spring Pocket Machining 1.750" O.D
Deck Thickness .750"
Minimum Bore Diameter 4.000"
Flat Mill .006" per cc 60cc Maximum
Angle Mill .009" per cc 55cc Maximum
Note: Angle mills might require .120" Thick intake gasket.  
Spark Plug Dimensions 14mm x .750" w/Gasket Seat
7/16 Studs Included Included
5/16 Adjustable Guide Plates Included
Spark Plug Location Angle Plug option
Exhaust Port Gasket, Fel-Pro #1405  
Head Gasket, 350cid Fel-Pro #1003  
Head Gasket, 400cid Fel-Pro #1014  
SB Chevy Head Bolt Kit, ARP #134-3701  
SB Chevy Head Stud Kit, 12 Point Nuts, ARP #234-4301