Edelbrock 16- Retainers Perf RPM 440 60189 60929 Heads

These retainers are designed to be used with springs featuring 1.55" O.D. and 1.125 I.D. The valve stem size needed for this retainer to work properly must be 11/32" and 7- degree locks are required also. The Edelbrock #9644 retainers are designed to be used with springs featuring 1.55" O.D. and 1.125 I.D. Theses retainers require 11/32" Valve Stems with 7- degree locks. Works with #5792 Valve Springs. Set of 16 AMC:-:290 (4.8L)-401 (6.6L);Buick:-:400 (6.6L)-455 (7.5L);Chrysler:Big-Block B-Series:383 (6.3L)-400 (6.6L);Chrysler:Big-Block RB-Series:413 (6.8L)/426 (7.0L)/440 (7.2L);Ford:Cleveland:351C (5.8L)

• Finish Ensures Rust and Corrosion Protection