Alum Cyl Head SBF 61cc T/W 170cc Assembled

The Trick Flow® Twisted Wedge® Track Heat® 170 Cylinder Heads are designed for small block Ford engines, specifically 289, 302, and 351W models manufactured in 1996 and earlier. These assembled cast aluminum cylinder heads feature 61cc combustion chambers, 170cc intake runner volume, and 66cc exhaust runner volume. They are designed for hydraulic roller camshafts with a maximum valve lift of 0.600 in. Key features include CNC-machined Twisted Wedge® combustion chambers, 2.020 in. intake valve diameter, 1.600 in. exhaust valve diameter, and dual springs per valve with chromoly steel retainers. Valve cover rails are raised 0.350" above stock height. These heads are generally compatible with stock pistons when used with Trick Flow Track Max® Hydraulic Roller Camshafts TFS-51503001 and TFS-51503002, and other aftermarket camshafts up to approximately 0.550" valve lift; however, piston-to-valve clearance should always be verified. This product has CARB E.O. #D-747-1 for emissions legality.