Howards Max Effort„¢ Dual Roller Valve Springs w/ Damper - 1.540" O.D., .750" I.D. 492090 All ports are precisely fitted

All ports are precisely fitted and finished with sturdy

Lowers your 1967-1972 GM A-body 2-inch

906 in Holes

8 Function

8-foot long

Howards Max Effort„¢ Dual Roller Valve Springs w/ Damper - 1.540" O.D., .750" I.D. 492090 All ports are precisely fittedHowardsCams competition racing valve springs are CNC coiled and heat treated in the finest facilities available. Using only the highest quality valve spring wire, all Howards? valve springs are stress relieved, ground and shot peened to offer our customers some of the very best valve springs on the market. Whether you're running a flat tappet or roller cam in your drag race, circle track, road course, performance marine or other extreme race