Chevrolet Camaro Corvette Firebird 305 350 TPI Twin 58mm Throttle Body 89-92 PART #1539 FEATURES: 7-12 RWHP Increase Twin 58mm Throttle Body Bores CNC machined Aluminum casting Direct Fit Replacement Designed and Manufactured In USA VEHICLE FITMENT: 1989-1992 Camaro and Firebird V8 1989-1991 Corvette 1991 GMC Syclone 4.3L V6 (requires modification to linkage) 1992-93 GMC Typhoon 4.3L V6 (requires modification to linkage) Improved Airflow = More Power Increase throttle response on your 1989-1992 GM 305/350 TPI with this BBK Performance Twin 58mm throttle body. BBK Performance throttle bodies create quicker throttle response and better acceleration. This throttle body will increase airflow to your engine adding more horsepower and torque to the wheels. Top Quality Construction BBK Performance throttle bodies are CNC machined from high quality 356 aluminum castings to ensure perfect OEM quality and fit every time. Features die stamped throttle linkages double sealed bearings and o ringed throttle shafts. Installation This throttle body is a direct fit replacement for a hassle free installation. BBK Performance Throttle Bodies are designed and manufactured in the USA.

NOTE:
TPS Voltage Target Key On setting is 0.54v (Connector Middle Wire) Idle Position Emissions Information This part is C.A.R.B Approved. EO Number Is D-245-15 It is Legal For use on the following GM applications in ALL 50 States: 1989-1992 Camaro/Firebird and Corvette 5.0/5.7L applications