Sold as a single spring - for M-6049-SCJA Super Cobra Jet cylinder heads (429/460 big block Ford)
This single hydraulic roller valve spring is the replacement spring for the Ford Performance Super Cobra Jet (SCJA) 429/460 big block Ford cylinder heads.
Ford Performance Valve Spring Kit - M-6513-17341
Replacement hydraulic roller valve spring for the M-6049-SCJA cylinder heads.
(1) Spring
Closed Seat Pressure 135No. 1.850 in.
Open Seat Pressure 365No. 1.250 in.
Maximum Lift Equal 0.700 in.
