BBK 1542 Twin 58-mm Power-Plus Throttle Body for 1992-1993 GM LT1 5.7L

Vehicle Fitment

• 1992-1993 Chevrolet Camaro LT1 (5.7-L V8 LT1 MPI, RWD)
• 1992-1993 Chevrolet Corvette LT1 (5.7-L V8 LT1 MPI, RWD)
• 1993 Pontiac Firebird LT1 (5.7-L V8 LT1 MPI, RWD)
• 1992-1993 Chevrolet Impala SS (5.7-L V8 LT1 MPI, RWD)

Fitment Notes

• Direct-bolt replacement throttle body for LT1 engines; includes gasket; no tune required
• CARB Executive Order D-245-15 ensures legal compliance in all 50 states

Features

• Twin 58-mm throttle bore design for up to 30-% increased airflow
• CNC-machined 356 aluminum body for precise fit and durability
• OEM-style die-stamped linkage and O-ring sealed throttle shaft
• Factory-sealed bearings and plug-and-play drive-by-wire compatibility
• Produces approximately 7-12 RWHP gains over stock unit
• C.A.R.B EO compliant for emission legality nationwide
• Made in USA and backed by BBK's 1-year limited warranty
• No modification or calibration required for installation

Specifications

• Bore: Twin 58-mm
• Material: Cast 356 aluminum
• Weight: approx. 3.9-4-lb total
• CARB EO: D-245-15 (50 state legal)
• Includes: throttle body unit and intake manifold gasket
• Warranty: 1-year limited by BBK

Included Components

• 1- BBK 58-mm Twin bore throttle body (part 1542)
• 1- Intake manifold gasket

Product Description

The BBK 1542 Power-Plus Twin 58-mm throttle body is engineered specifically for GM LT1 5.7-L engines in 1992-1993 Camaro, Corvette, Firebird, and Impala SS models. This direct bolt-on upgrade delivers significant gains in throttle response and airflow - typically 7-12 RWHP - without requiring ECU recalibration.

Constructed from precision-cast 356 aluminum with OEM-style linkage and sealed bearings, the BBK 1542 installs easily using factory hardware and includes necessary gasket. Its CARB EO D-245-15 certification ensures full emissions compliance across all 50 states.

Ideal for enthusiasts seeking improved mid-range torque and drivability, this throttle body delivers enhanced performance while retaining factory driveability and reliability. Backed by BBK's one-year warranty and crafted in the USA, it's a clean, effective upgrade for classic LT1 builds.