The Fast, Easy Way To Bolt-On 65HP!
The Turbo-Swirl cylinder heads are designed for 289/302/351 Windsor-style engines. They feature improved air flow over original GT-40 aluminum heads. Heads use either GT-40 or aftermarket performance intake manifolds, headers and valve covers. Made from 356-T6 aluminum castings and weigh approximately 22lbs. each (25lbs. lighter than cast iron GT-40 heads). Each head is leak tested prior to assembly and feature high temp exhaust valve seats, thick deck for improved sealing, increased section thickness for porting and webbed rocker bosses.
Specifications:
Intake flows 240 cfm at .550'' lift
Exahust flows 170 cfm at .550'' lift
1.94'' intake and 1.54'' exhaust valves
Intake port volume 178cc
Exhaust port volume 62cc
Valve springs compatible with all Ford Racing roller camshafts
Use AGSF-32C spark plugs
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