1985–1991 Corvette C4 L98 ProCharger P600B Intercooled Complete System
ProCharger 1GB212-08I P600B Intercooled Complete System for 1985–1991 Chevrolet Corvette C4 with the original 5.7L L98 TPI engine. Excludes ZR-1/LT5 and engine swaps.
Hardware and configuration
P600B supercharger with factory-style 6-rib drive. Satin finish is standard; polished supercharger and bracket finish adds $700.
Includes a two-core intercooler for 1985–1989 or twin intercoolers for 1990–1991, Bosch bypass valve, ProPump and FMU fuel hardware.
Standard boost is 8 psi. Manufacturer-reported horsepower gain is 55–75%, depending on application and vehicle condition.
Installation and ordering
Special-order kit requires a manufacturer order form and non-refundable deposit; additional lead time may apply. Provide VIN, year, transmission, suspension equipment and all engine/fuel/exhaust modifications. Suspension configuration may require hood or bracket modifications. Manufacturer suspension exclusions require compatibility review before order release. Larger injectors may be necessary for higher-boost configurations.
Emissions
ProCharger lists the standard 1GB212-08I P600B 8 psi system for 1985–1991 Corvette 5.7L under CARB EO D-365-3. Eligibility requires the exact approved vehicle and configuration; modifications require review.
Processing & Shipping Overview
Processing occurs before shipping.
Most in-stock items typically process within 2–3 business days before shipment or pickup. Expedited shipping options affect transit time after an order ships and do not speed up processing.
Made-to-order, special-order, vendor drop-ship, and freight items require additional processing time before shipping. Any extended lead times will be noted on the product page when applicable.
For the most up-to-date order status or lead time questions, please contact sales@smgspeed.com or use live chat during business hours.