Trick Flow DHC Assembled Aluminum Cylinder Head - 2.020 in / 1.600 in Valves - 175 cc Intake - Small Block Chevy MEL425S Three sets of springs and 2 1 2 to M77MS829H30 1303LS1-3 Size:Youth 2X-Large

Three sets of springs and four stop bushings let you dial in up to 24 different timing curves to match your driving needs

ARP Nyloc nuts

Dowel Pins / Plugs / Sleeves Included

Velvet/solid fabric cover for durability

which keeps the harmonic balancer perpendicular to the crankshaft's centerline for a bind-free installation

Trick Flow DHC Assembled Aluminum Cylinder Head 2.020 in 1.600 in Valves 175 cc Intake Small Block Chevy MEL425S Three sets of springs and 2 1 2 to M77MS829H30 1303LS1 3 Size:Youth 2X Large Three sets of springs and four stop bushings let you dial in up to 24 different timing curves to match your driving needs ARP Nyloc nuts