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Trick Flow 18 degree Aluminum Cylinder Heads for Small Block Chevy

Our 18 Degree heads can make serious horsepower—power ideal for high rpm circle track or Super-class drag racing. Dyno testing proves it—a 406 cubic inch, 12:1 compression small block with out of the box 18 Degree heads produced 703 peak HP at 7,500 rpm and 539 ft.-lbs. peak torque at 6,000 rpm. Our 18 Degree cylinder heads provide high airflow numbers—325 cfm intake/235 cfm exhaust—right out of the box. The heads feature 56cc combustion chambers, 250cc raised intake and 100cc exhaust runners, ductile iron intake and hard bronze exhaust valve seats, and manganese bronze valve guides. The 18 Degree heads accept most current 18 degree intake manifolds (including the new two-piece manifolds), headers, and other components. They do require the use of offset shaft mount rocker arms and a mechanical roller camshaft with offset intake lifters. The bare castings are machined for 2.150 in. intake and 1.625 in. exhaust valves (and can accept intake valves up to 2.20 in.) and 1.550 in. valve springs. Assembled heads are also available, featuring 2.15 in. intake/1.60 in. exhaust stainless steel valves, 1.56 in. dual valve springs, and 10 degree retainers and locks. Technical Specs and Airflow Data (PDF: 71k/6pgs)

Kit Description Price Buy Now SBC 18 degree Heads - Bare Pair TFS-31800001 - $1389 SBC 18 degree Heads - Assembled Pair TFS-31800100 - $1989

Included Parts: Included parts for TFS-31800001: Two bare cylinder heads with valve seats and guides installed One Specification/Warranty sheet Included parts for TFS-31800100: Two assembled cylinder heads with valve seats and guides installed 1.560 in. Dual Springs with Dampers 10 Degree Machined Steel Valve Locks Chromemoly Steel Retainers One Specification/Warranty sheet Recommended Accessories:

Trick Flow 18 Degree Head Gasket Kit: Designed for all 18 degree SBC cylinder heads, this gasket kit includes the following high quality Fel-Pro gaskets: (2) 1034 head gaskets (1) .060 in. one piece intake manifold gasket kit (2) Non-subflanged exhaust header gaskets (2) Molded valve cover gaskets (1) Distributor gasket (1) Water neck gasket

TFS 18 Degree Head Gasket Kit TFS - $99