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No Heat Riser Or Air Pump Holes
The Maximum Street/Strip Performance
If you need the world’s finest high perofmance street/strip small block Ford head, check out AFR’s all new 185cc intake port emissions legal (CARB EO #250-3) cylinder heads. With lightweight 8mm 2.020 intake valves, 1.600” exhaust valves, combustion chamber volumes of 58cc or 72cc, and 68cc exhaust ports, AFR’s new 185cc Ford cylinder head is designed for 302-351 cid engines operating from 1500 rpm to 6500 rpm. A 3/4” 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. Note: 1986 5.0L must have pistons notched for clearance.
Note:
Hydraulic roller cams typically experience valve float at 6000-6200 rpm because of their fast ramp rates. AFR suggests you upgrade your springs to AFR part #8047, 1.290 O.D. with higher spring pressures to reduce chances of valve float associated with rpm’s 6200 or higher.
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