Edelbrock E-Series E-205 Cylinder Head - Assembled - 2.080 / 1.600 in Valve - 205 cc Intake - 60 cc Chamber - 1.550 in Springs - Small Block Ford - Pair Knee Guard Mount The spring holds the button

The spring holds the button captive so that it can't be dropped underneath the car or into some hard-to-get-at area of the chassis

and four chrome plated brackets which secure to valve cover bolts

Flexible reinforced fingers

2-1/2 in OD Bellmouth

Edelbrock E-Series E-205 Cylinder Head - Assembled - 2.080 / 1.600 in Valve - 205 cc Intake - 60 cc Chamber - 1.550 in Springs - Small Block Ford - Pair Knee Guard Mount The spring holds the buttonCylinder Head Specifications: Combustion chamber volume: 60cc; Intake runner volume: 205cc; Exhaust runner volume: 62cc; Intake valve diameter: 2. 08"; Exhaust valve diameter: 1. 60"; Valve stem diameter: 11 32"; Valve guides: Manganese Bronze; Deck thickness: 5 8"; Valve spring diameter: 1. 46"; Valve spring maximum lift: . 575"(5028) . 650"(5027); Rocker stud: 3 8"; Guideplate: Hardened steel; Pushrod diameter: 5 16"; Valve angle: 20 ; Exhaust port