PAC Racing Springs 8 Degree Valve Lock - 3/8 in Valve Stem - Standard Height - Black Oxide (Set of 16) ATMP23852 Combine the two together and

Combine the two together and you now have one of the coldest air charges possible and a octane monster running race gas

And in 2004

2500-2750 lb Car Weight

professional-looking finish

Chevrolet 396-454

PAC Racing Springs 8 Degree Valve Lock - 3/8 in Valve Stem - Standard Height - Black Oxide (Set of 16) ATMP23852 Combine the two together andProduct Description: Valve Lock 8 Degree 3 8 in Valve Stem Standard Height Steel Black Oxide Set of 16 Traditional Springs are made from the same size (Diameter) wire throughout the helix of the spring. PAC Racing Springs has partnered with technology leaders in order to provide this advanced new tapered wire product. Tapered wire allows for a true progressive and dual rate without reducing spring travel and increasing weight from traditional methods.