BBK 89-92 GM 305/350 Twin 58mm Throttle Body — BBK Power Plus Series

SKU: BBK1539
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About BBK

BBK engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full BBK lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

BBK Performance Power Plus Series Twin 58mm Throttle Body for GM 305/350

Unlock significant performance gains for your 1989-1992 GM 305 or 350 engine with the BBK Power Plus Series Twin 58mm Throttle Body. Engineered as a direct replacement for the restrictive factory unit, this throttle body is designed to significantly improve airflow, delivering up to 30% more volume. This translates directly into enhanced horsepower, increased torque, and a more responsive throttle, transforming your driving experience.

Superior Construction and Performance:

  • Increased Airflow: Twin 58mm bore design maximizes air intake for substantial power improvements.
  • CNC Machined: Crafted from a new, high-quality 356 aluminum casting for precision and durability.
  • OEM Driveability: Provides factory-like drivability while delivering superior performance.
  • Premium Components: Features OEM-style die-stamped throttle linkages, double-sealed bearings, and O-ringed throttle shafts for optimal function and longevity.
  • Direct Bolt-On: Designed for a hassle-free installation, fitting seamlessly into your existing intake system.
  • No Tune Required: Works with your vehicle's factory tune, simplifying the upgrade process.
  • 50-State Legal: CARB EO D-245-15 ensures compliance for use in all states.

This BBK throttle body is not just an upgrade; it's a performance enhancement meticulously engineered for enthusiasts seeking tangible results. Experience quicker acceleration and a more aggressive engine note. Whether you're building a street machine or a weekend warrior, the BBK Power Plus Series throttle body is a critical component for maximizing your engine's potential. Elevate your GM's performance today with this exceptional upgrade from BBK, available now at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1989-1990 Chevrolet Camaro Iroc-Z
1989-1992 Chevrolet Camaro RS
1991-1992 Chevrolet Camaro Z28
1992 Chevrolet Camaro RS Heritage Edition
1992 Chevrolet Camaro Z28 Heritage Edition
1989-1991 Chevrolet Corvette Base
1990-1991 Chevrolet Corvette ZR-1
1992-1993 GMC Typhoon Base
1989 Pontiac Firebird Trans Am GTA SE
1989-1992 Pontiac Firebird Base
1989-1992 Pontiac Firebird Formula
1989-1992 Pontiac Firebird Trans Am
1989-1992 Pontiac Firebird Trans Am GTA

Product Details

Product Description
Part Numbers
Sizing & Fit

About BBK

BBK engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full BBK lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

BBK Performance Power Plus Series Twin 58mm Throttle Body for GM 305/350

Unlock significant performance gains for your 1989-1992 GM 305 or 350 engine with the BBK Power Plus Series Twin 58mm Throttle Body. Engineered as a direct replacement for the restrictive factory unit, this throttle body is designed to significantly improve airflow, delivering up to 30% more volume. This translates directly into enhanced horsepower, increased torque, and a more responsive throttle, transforming your driving experience.

Superior Construction and Performance:

  • Increased Airflow: Twin 58mm bore design maximizes air intake for substantial power improvements.
  • CNC Machined: Crafted from a new, high-quality 356 aluminum casting for precision and durability.
  • OEM Driveability: Provides factory-like drivability while delivering superior performance.
  • Premium Components: Features OEM-style die-stamped throttle linkages, double-sealed bearings, and O-ringed throttle shafts for optimal function and longevity.
  • Direct Bolt-On: Designed for a hassle-free installation, fitting seamlessly into your existing intake system.
  • No Tune Required: Works with your vehicle's factory tune, simplifying the upgrade process.
  • 50-State Legal: CARB EO D-245-15 ensures compliance for use in all states.

This BBK throttle body is not just an upgrade; it's a performance enhancement meticulously engineered for enthusiasts seeking tangible results. Experience quicker acceleration and a more aggressive engine note. Whether you're building a street machine or a weekend warrior, the BBK Power Plus Series throttle body is a critical component for maximizing your engine's potential. Elevate your GM's performance today with this exceptional upgrade from BBK, available now at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1989-1990 Chevrolet Camaro Iroc-Z
1989-1992 Chevrolet Camaro RS
1991-1992 Chevrolet Camaro Z28
1992 Chevrolet Camaro RS Heritage Edition
1992 Chevrolet Camaro Z28 Heritage Edition
1989-1991 Chevrolet Corvette Base
1990-1991 Chevrolet Corvette ZR-1
1992-1993 GMC Typhoon Base
1989 Pontiac Firebird Trans Am GTA SE
1989-1992 Pontiac Firebird Base
1989-1992 Pontiac Firebird Formula
1989-1992 Pontiac Firebird Trans Am
1989-1992 Pontiac Firebird Trans Am GTA

Product Details

Product Description

About BBK

BBK engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full BBK lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

BBK Performance Power Plus Series Twin 58mm Throttle Body for GM 305/350

Unlock significant performance gains for your 1989-1992 GM 305 or 350 engine with the BBK Power Plus Series Twin 58mm Throttle Body. Engineered as a direct replacement for the restrictive factory unit, this throttle body is designed to significantly improve airflow, delivering up to 30% more volume. This translates directly into enhanced horsepower, increased torque, and a more responsive throttle, transforming your driving experience.

Superior Construction and Performance:

  • Increased Airflow: Twin 58mm bore design maximizes air intake for substantial power improvements.
  • CNC Machined: Crafted from a new, high-quality 356 aluminum casting for precision and durability.
  • OEM Driveability: Provides factory-like drivability while delivering superior performance.
  • Premium Components: Features OEM-style die-stamped throttle linkages, double-sealed bearings, and O-ringed throttle shafts for optimal function and longevity.
  • Direct Bolt-On: Designed for a hassle-free installation, fitting seamlessly into your existing intake system.
  • No Tune Required: Works with your vehicle's factory tune, simplifying the upgrade process.
  • 50-State Legal: CARB EO D-245-15 ensures compliance for use in all states.

This BBK throttle body is not just an upgrade; it's a performance enhancement meticulously engineered for enthusiasts seeking tangible results. Experience quicker acceleration and a more aggressive engine note. Whether you're building a street machine or a weekend warrior, the BBK Power Plus Series throttle body is a critical component for maximizing your engine's potential. Elevate your GM's performance today with this exceptional upgrade from BBK, available now at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1989-1990 Chevrolet Camaro Iroc-Z
1989-1992 Chevrolet Camaro RS
1991-1992 Chevrolet Camaro Z28
1992 Chevrolet Camaro RS Heritage Edition
1992 Chevrolet Camaro Z28 Heritage Edition
1989-1991 Chevrolet Corvette Base
1990-1991 Chevrolet Corvette ZR-1
1992-1993 GMC Typhoon Base
1989 Pontiac Firebird Trans Am GTA SE
1989-1992 Pontiac Firebird Base
1989-1992 Pontiac Firebird Formula
1989-1992 Pontiac Firebird Trans Am
1989-1992 Pontiac Firebird Trans Am GTA

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