Howards Cams Valve Spring Set 98543 Pacaloy 550 lbs/in Dual Spring 1.550 OD January 9, 2024 Comments Off Posted in: howards Valve Spring Set 98543; Pacaloy 550 lbs/in Dual Spring 1.550 OD. Engine Valve Spring Set Model Or Series. Share Tags: cams, dual, howards, lbsin, pacaloy, spring, valve Comments are closed.