AFR Cylinder Heads, 5.0/5.8L, 185Cc Stud Mount, 58Cc Combustion Chamber, Assembled - Emissions Legal

If you need the world’s finest street/strip small block Ford head, check out AFR’s all new 185cc intake port emissions legal (CARB EO #250-3) cylinder heads. With 2.020" intake valves, 1.600" exhaust valves, combustion chamber volumes of 58cc or 61cc, and 69cc exhaust ports, AFR’s new 185cc Ford head is designed for 302-351 cid engines operating from 1500 rpm to 6500 rpm. A .75" thick head deck makes the AFR head ideal for nitrous or blower applications. Will not accept rail rocker arms. Hardened pushrods required with heads #1420 and #1422. High flow 2.020 valves might require aftermarket pistons notched for valve clearance. Springs are good to .550" lift. Note: 1986 5.0L must have pistons notched for clearance.