HKS Spring Wastegate Apex Chassis padding: 8px 12px

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Base 1987 - 1991 GMC V2500 Suburban Base 1987 GMC V2500 Suburban High Sierra 1987 - 1989 GMC V2500 Suburban Sierra Classic 1990 GMC V2500 Suburban SLE 1987 - 1991 GMC V3500 Base 1987 - 1989 GMC V3500 High Sierra

Engineered specifically to take advantage of the phenomenal efficiency of the FASTT LSXT intake manifold

Description: 420" lift rules

HKS Spring Wastegate Apex Chassis padding: 8px 12pxStandard wastegate is small but have reliable control over boost pressure[about 294. 2kW(400ps)]. You can adjust settings of supercharging pressure with the choice of spring. Because the special wastegate and standard wastegate have the same flange shape, you can use for the step up. One wastegate can control the boost of 367. 8? 441. 3kW(500? 600ps). By the choice of spring supercharging pressure can be set as high as about 156. 9kPa(1. 6kgf cm2).