BBK 1540 Twin 52mm Power Plus Throttle Body for 92-93 GM LT1 5.7L V8

Vehicle Fitment

• 1992-1993 Chevrolet Camaro (5.7L LT1 V8)
• 1992-1993 Chevrolet Corvette (5.7L LT1 V8)
• 1993 Pontiac Firebird (5.7L LT1 V8)

Fitment Notes

• Application-specific to the LT1 5.7L engine only - does not fit LT4 or later LS-based engines
• Stock flange design for direct bolt-on fit

Features

• Twin 52mm throttle blade design for increased airflow
• CNC machined from 356 aluminum castings for OEM-quality fit
• OEM-style die-stamped throttle linkages
• Double-sealed bearings and O-ringed throttle shafts
• Maintains factory electronic components and driveability
• 50-state smog legal

Specifications

• Bore size: 52mm (twin blade)
• Construction: 356 aluminum casting, natural finish
• Flange type: Stock
• Estimated gain: 7-12 HP (varies by vehicle/application)

Included Components

• 1x BBK Power Plus twin 52mm throttle body
• 1x Installation instructions

Product Description

The BBK 1540 Power Plus throttle body is a direct bolt-on upgrade for 1992-1993 GM LT1 5.7L applications, replacing the restrictive stock unit with a twin 52mm design that increases airflow for better throttle response. Each unit is CNC machined from 356 aluminum for consistent, OEM-quality fit and finish, and retains factory electronic components so no tuning is required after installation.

Expect a realistic gain of roughly 7-12 horsepower depending on the vehicle and supporting modifications, with OEM-style throttle linkages, double-sealed bearings, and O-ringed shafts keeping the unit reliable long-term. Since it's 50-state smog legal, it's a straightforward performance upgrade for LT1-powered Camaro, Firebird, and Corvette owners who want more response without giving up daily driveability.