These reasonably priced AFR 210cc intake
port small block Chevy angle plug cylinder heads are available in two
stages of performance. The Race Ready version features 100% CNC ported
intakes while the higher flowing Competition version features 100
percent CNC ported intakes with greater detail. Both come with 100
percent CNC ported combustion chambers and 80cc exhaust ports with a
3/4 in. thick head deck (ideal for nitrous or blower applications).
Standard valves are lightweight 8mm 2.080 in. intake and 1.600 in. exhaust
with AFR’s hardened ductile iron interlocking valve seats. The exceptional
flow characteristics, 23 degree valve angle, and standard valve
spacing make this the perfect head for 350 to 400 cid engines in bracket
drag cars, sportsman oval trackers, and highly modified street class cars
operating between 3000 and 7500 rpm (higher rpm ranges possible depending
on combination of parts). Dual valve cover bolt pattern is standard.
Exhaust port is raised .250 in. over GM L98 cylinder