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Sierra SLX 1990 - 1999 GMC P3500 Base 1990 GMC P3500 Value Van 1987 GMC R1500 Base
Your cooling system must be properly evacuated by a certified technician before condenser removal and charged after install
Inner structure of the silencer was redesigned so the unwanted low exhausts resonance was eliminated
so verify before ordering
Comp Cams Rocker Arm,GM LS1,LS2,LS6 1.8 06-11 Sierra SLX 1990 - 1999(1) Ultra Pro Magnum" Roller Rockers Bolt Down GM LS1 LS2 LS6 Cathedral Port Heads "For LS1 LS2 LS6 4. 8L, 5. 3L, & Pre '07 6. 0L Truck Engines Cathedral Port Head LS Applications "Single Bolt Down Rocker Includes Bolt "1. 8: 1 Ratio New LS Specific Ultra Pro Magnum" Rocker Arms From COMP Cams Increase Ratio And Stiffness Over Stock Rockers, While Also Increasing Lift Without The Need To Swap Cams As LS engines continue to grow in popularity, COMP
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