FLOTEK The Hammer Cylinder Head - Assembled - 2.080 / 1.600 in Valves - 205 cc Intake - 60 cc Chamber - 1.580 in Springs - Small Block Ford 2205-SR-505 BR40073 Stage two is constant voltage

Stage two is constant voltage & declining current

laser cut flanges

Side Bell Bolt

Will not shrink deteriorate or blow out

1994-2017 GMC Yukon

FLOTEK The Hammer Cylinder Head - Assembled - 2.080 / 1.600 in Valves - 205 cc Intake - 60 cc Chamber - 1.580 in Springs - Small Block Ford 2205-SR-505 BR40073 Stage two is constant voltageProduct Description: Cylinder Head The Hammer Assembled 2. 080 1. 600 in Valves 205 cc Intake 60 cc Chamber 1. 580 in Springs Aluminum Small Block Ford Sold Individually Flo Tek manufactures aluminum cylinder heads for big block Chevys and small block Chevy and Fords. Each head comes preassembled with valves and springs.