PAC Racing Springs 400 Series Titanium Valve Spring Retainer - 0.795 in / 0.517 in OD Steps - Single Spring - Ford Modular (Set of 16) RSI63-616474021B The combination of these two

The combination of these two components produces an intense spark that is unmatched by stock HEIas and other aperformancea ignition systems

the SB044 is cold formed to better resist torsional fatigue and retain its "memory" far longer than the hot-formed bars used by many competitors

1977-1980 Oldsmobile 98

Late Model Stock Car

Included 5-foot long performance shifter cable offers smooth cable operation

PAC Racing Springs 400 Series Titanium Valve Spring Retainer - 0.795 in / 0.517 in OD Steps - Single Spring - Ford Modular (Set of 16) RSI63-616474021B The combination of these twoProduct Description: Valve Spring Retainer 400 Series 0. 795 in 0. 517 in OD Steps Single Spring Titanium Ford Modular 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