typically had to go to suppliers on the West coast for up to date racing components for their race cars
Breathers are 1" tall and 1-3/8" in diameter
1989-1991 Chevrolet R3500 CID 454 GAS
13 Degree Brodix / Dart Heads
Edelbrock 7 Degree Valve Lock - 11/32 in Valve Stem - 0.050 in Less Height - Set of 32 2110013 typically had to go toHeat treated machined (HTM) 7 valve stem locks for use with Edelbrock retainers. Black oxide, top quality steel for maximum strength. Available in sets of 32 (except number 9614). Edelbrock, E 210, Victor Jr., Chevy, Cylinder Head, 11 32", Single Groove, . 050" low, 7 Degree, 4140 Machine Hardened steel, Valve Stem locks, Valve, Locks, 9615 Valve Stem Diameter (mm): 8. 67mm Lock Style: 7 degree Lock Groove Quantity: 1 groove Lock Material: Hardened