ATI 916163-10 -10% Overdrive Supercharger Pulley for GM LT4 / LT Series 8-Groove

Vehicle Fitment

• GM LT-series engines, especially paired with LT4 supercharged platforms (e.g. C7 Corvette Z06 LT4)

Fitment Notes

• Designed for LT4 or compatible supercharged LT engines using an 8-groove serpentine belt drive.
• Provides 10% overdrive relative to factory supercharger pulley speed.
• Ensure belt length, pulley spacing, and alignment are appropriate when installing.
• Fitment beyond known LT4 platforms is unconfirmed--validate your engine configuration before purchase.

Features

• 10% overdrive relative to OEM supercharger pulley to boost boost output
• 8.800" diameter with 8-groove serpentine pattern for proper belt engagement
• Machined from high-strength aluminum for durability and reduced weight
• Black anodized finish for corrosion resistance and aesthetic appeal
• Billet design ensures precision balance and reduced vibration
• Includes mounting hardware for direct installation
• Compatible with dry-sump and wet-sump supercharged LT configurations
• Helps increase boost and performance gain without extensive modification

Specifications

• Part Number: 916163-10
• Pulleys Type: Supercharger drive pulley (lower or "blower" pulley)
• Diameter: 8.800 inches
• Groove Count: 8 grooves (serpentine belt)
• Material: Billet aluminum, black anodized
• Overdrive Ratio: 10% relative to OEM supercharger pulley
• Application Series: GM LT / LT4 engine family

Included Components

• 1x Supercharger drive pulley, 8.800", 8-groove (ATI 916163-10)
• Mounting hardware (bolts/fasteners)
• Instruction / installation guide

Product Description

The ATI 916163-10 is a high-performance overdrive pulley engineered for GM LT-series engines, especially in LT4 supercharged configurations such as the C7 Corvette Z06. This pulley increases supercharger speed by approximately 10%, delivering additional boost and power without extensive modification to the system.

With an 8.800" billet aluminum design and 8-groove serpentine interface, the 916163-10 fits many factory supercharger belt setups. Its black anodized finish safeguards against corrosion, while included mounting hardware supports a bolt-on installation. Before installing, confirm belt length, alignment, and engine compatibility to prevent alignment or loading issues.