High Performance, dual, super valve springs provide 205# seat pressure. Use with hot solid or small roller cam grinds.
Fits Buick 400-430-455
O.D. 1.410
I.D. 1.700
205 lbs @ 1.900
640 lbs @ 1.150
Coil Bind 1.115
Retainer: TA 1450/A Series
Locater: TA 1452B.035