Proflow Cylinder Heads, SuperMax 210 CNC, SB Chev, Aluminum, Assembled, Studs &

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Proflow Cylinder Heads, SuperMax 210 CNC, SB Chev Aluminum, Assembled, 64cc Chamber 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! SBC 210 Angle Plug Specifications & Features: Material A356 Aluminum Intake Port Volume 210cc 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 Warning: Do not machine spring pad any deeper. 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" Rocker Studs Included 5/16" Guide Plates Adjustable Included Viton Valve Seals Hardened Valve Spring I.D Locator 1.550" O.D x .780" I.D Intake Valve Seats 2.200" O.D x 1.750" I.D x .375" Deep Exhaust Valve Seats 1.696" O.D x 1.325" I.D x .305" Deep Bronze Valve Guides .502" O.D x 2.100" O.A.L Recommended Components Important: Do not port match your intake manifold to Fel-Pro gasket as it does not precisely fit MIC heads. 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