Description
PAC Racing RPM Series Valve Spring Ovate Beehive Spring 275 lb in Spring Rate 1.013" Coil Bind 1.061" OD GM LS Series (Set of 16) H776C08S Edelbrock Pro Flo XT using 4 WEI7155 Edelbrock Pro Flo XT using 4 bolt TBs & Most other 90 through 95mm LS intakes using 4 bolt TBs Factory Mustang Panhard rod supports are made from weak U shaped stamped steel that allows excessive deflection under load various bench type equipment Xray Diffraction