SB-Chevy Competition Cylinder Heads - 195cc Intake Ports
|SB Chevy Basic Package Components|
|100% CNC Ported Combustion Chambers|
|100% CNC Ported Exhaust Ports|
|100% CNC Ported Intake Ports|
|3-angle Valve Job|
|Intake Valve, 2.020'' standard length|
|Exhaust Valve, 1.600'' standard length|
|1.290'' OD Hydraulic Dual Valve Spring With Dampener, 135 lbs. on seat, .600'' maximum lift|
|10º 4140 Chrome Moly Retainers|
|7º Valve Locks|
|3/8'' Rocker Studs|
|Intake Valve Seats|
|Exhaust Valve Seats|
|Bronze Valve Guides|
|SB Chevy Street Head Specifications|
|Head Torque||65-70 Ft. Lbs.|
|Rocker Stud Torque||55-60 Ft. Lbs.|
|Intake Port Gasket||1.280'' x 2.090'' w/ 3/8'' radius|
|Important: Do not port match your intake manifold to this Fel-Pro gasket, as they do not exactly fit AFR heads.|
|Exhaust Port Gasket||Fel Pro 375-1404|
|Head Gasket||350 cid Fel Pro 375-1003|
|400cid Fel Pro 375-1014|
|Head Bolts & Studs||Standard|
|Head Bolt Washers||Manley Standard|
|Suggested Manifold||Edelbrock RPM Performer|
|Spark Plug Starting Range||AC FR3LS|
|Combustion Chambers||56cc to 74cc|
|Spring Pocket can be cut to 1.625, no deeper.|
|Angle Mill||.008'' per cc|
|Flat Mill||.006'' per cc|
The Ultimate Bolt-on Emissions Legal Street Weapon!
The AFR Emissions Legal (versions from 1969-94 with heat riser, CARB EO #D-250-2), 195cc intake port small block Chevy cylinder heads are available in your choice of straight or L98 angle plug versions. These cylinder heads feature a 65cc or 75cc combustion chamber with a 64cc exhaust port and a 3/4 in. thick head deck (ideal for nitrous or blower applications). Standard valves are lightweight 8 mm diameter stem, 2.050 in. (comp package has 2.080 in.) intake valve and 1.600 in. exhaust with AFR's hardened ductile iron interlocking valve seats. The exceptional flow characteristics, ideal operating range of 2000 rpm to 6500 rpm, 23° valve angle, and standard valve spacing make this the perfect street head for 350-400 ci engines from 1955-1986.
Also available for 1987 to 1995 cast iron head engines with center bolt valve covers and two center intake bolts at 72° angle, AFR head p/n 033-1041 (dual valve cover bolt pattern is standard — no extra parts required). Exhaust port and bolt pattern are raised 3/32 in. over GM L98 cylinder heads, so this rarely affects header or chassis fitment.
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