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Recommended for displacements up to 408 cubic inches, operating up to 6500-6800 RPM, our 195cc "Competition" cylinder heads feature 100% CNC machined intake ports, exhaust ports and combustion chambers. Manufactured in A356 aluminum and assembled with high quality components. Not compatible with OEM pistons. Component upgrades and different machining options are available to suit your specific build.

195cc Aluminum SBF Cylinder Heads
Part # Description Combustion Chamber
1426-716 Stud Mount - With EGR & Air Pump 58cc
1428-716 Stud Mount - With EGR & Air Pump 72cc
1381-716 Stud Mount - Without EGR & Air Pump 58cc
1383-716 Stud Mount - Without EGR & Air Pump 72cc

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195cc Street Head Flow Chart
  .200 .300 .400 .500 .550 .600 .650
Int 152 206 260 287 298 308 315
Exh 126 171 207 222 227 231 235

Test conducted at 28" of water (pressure) on Superflow 600
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe

Basic Package Components
100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
Competition 5-angle Valve Job
8mm Bead Lock Intake Valve, 2.050" x 4.903" Overall Valve Length, Stud mount
8mm Bead Lock Exhaust Valve, 1.600" x 4.950" Overall Valve Length
PAC Racing Spring 1.270" OD Hydraulic Roller Dual Valve Spring, 155 lbs. on seat, .650" maximum lift, Max RPM 7000-7200
Manley 7° Chrome Moly Retainers
7° Bead Lock Valve Keepers
ARP 7/16" Rocker Studs
Adjustable 5/16" Guide Plates
Viton Valve Seals
Hardened Valve Spring I.D Locator 1.550" O.D x .780" I.D
Ductile Iron Intake Valve Seats 2.131" O.D x 1.680" I.D x .375" Deep
Ductile Iron Exhaust Valve Seats 1.650" O.D x 1.350" I.D x .375" Deep
Bronze Valve Guides
Thermactor Air Injector Reducer Bushing (5/8"-11 x 7/16"-14)
Specifications & Features:
Material
A356 Aluminum
Intake Port Volume
195cc
Intake Port Dimension
2.060" H x 1.220" W 11/32 Radius
Intake Port Location
Stock
Exhaust Port Volume
70cc
Exhaust Port Dimension
1.405" H x 1.400" W
Exhaust Port Location
Raised .125"
Combustion Chamber Size
58cc or 72cc
Valve Cover Bolt Pattern
Perimeter Bolt
Valve Angle
20°
Valve Spring Pocket Diameter
1.460" O.D
Max Valve Spring Pocket Machining
1.625" O.D
Deck Thickness
.750"
Minimum Bore Diameter
4.000"
Flat Mill
.006" per cc 54cc Max (from 58cc); 68cc Max (from 72cc);
Angle Mill
.009" per cc 54cc Max (from 58cc); 68cc Max (from 72cc);
Minimum Cross Sectional Area
2.075 sq. in.
Spark Plug Dimensions
14mm x .750" w/Gasket Seat
Head Bolt Diameter
1/2"