Chrome Moly Steel retainers 1.080" OD, .735" ID (.060" Higher than 507-ST) ISK50 Product:For 5005, 6005, 6105, 6205, 8005-A, 8305, 9005, 9105, 9265 Valve Spri MLS Head Gasket 55041 CL55041

MLS Head Gasket 55041 CL55041 Suit GM LS1/LS2/LS3/LS6

Severe duty use on oval tracks

not plastic like stock or starters sold at a local parts store

This feed through requires only a 25

Compression Ratio with 64cc chamber volume: 11

Chrome Moly Steel retainers 1.080" OD, .735" ID (.060" Higher than 507-ST) ISK50 Product:For 5005, 6005, 6105, 6205, 8005-A, 8305, 9005, 9105, 9265 Valve Spri MLS Head Gasket 55041 CL55041Chrome Moly Steel retainers 1. 080" OD, . 735" ID (. 060" Higher than 507 ST)For 5005, 6005, 6105, 6205, 8005 A, 8305, 9005, 9105, 9265 Valve Springs ISK507 STA K507 STA Isky 4130 Chrome Moly Light Weight Steel Valve Spring Retainers are ideal for street and highly stressed competition applications. They are specially heat treated and black oxide finished to protect against corrosion. Set of 16 4130 Chromemoly steel retainers.