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The turbo/intercooled Syclone engine is the latest variant off the famed GM 90° small block engine platform. Application is specifically to the Syclone short wheelbase all wheel drive pickup truck to be marketed by GMC in 1991. The engine project was a joint venture between General Motors Powertrain Division and PAS TRIAD of Troy, Michigan. Engine manufacture will originate at the GMPD Romulus 4.3L plant with final assembly at the Shreveport vehicle assembly facilities of GMC Truck and Bus and PAS TRIAD. Features of the engine include: High specific performance (1430 KPa BMEP) Air to water intercooling with an independent cooling loop. Electronically controlled wastegate for boost and knock control. High dynamic range multi-port fuel injection. Communization with standard 4.3L engine where possible to facilitate manufacturing process and quality management.