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Engines and Components› Belts and Pulleys

ZZPerformance

Pulley System

Name: Pulley System
Brand: ZZPerformance
SKU: ZZ-MPS38-3.0-BLK

$99.98

SKU: ZZ-MPS38-3.0-BLK

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$100 Minimum Order

Non-Returnable Item

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Moderate — 2–4 hours

Overview

It allows for quick changing of pulleys with an Allen wrench once installed on the stainless hub. This system enables switching between pulleys based on conditions, such as using one for street driving and a smaller one for track use or high-octane fuel.

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The ZZPerformance Modular Pulley serves as a direct replacement for the ZZP Modular Pulley System (MPS). This system replaces the stock supercharger pulley with a stainless steel hub, onto which various pulleys can be bolted. The modular design facilitates easy pulley swaps using an Allen wrench, allowing users to adapt their supercharger's performance to different driving conditions. For instance, a smaller pulley can be utilized for track days or when running higher octane fuel, while a different pulley might be preferred for general street use. Our pulleys feature 8 ribs, but a 6-rib belt will still function correctly. The recommended bolt torque specification for installation is 72 inch-pounds. The ZZP MPS is highly recommended for individuals planning future modifications to their vehicle. Specific pulley sizes are recommended based on fuel octane and vehicle modifications: * **3.6" Pulley:** Recommended for '04+ Grand Prix supercharged, '00+ SSEi/Ultra, and '04+ Monte Carlo/Impala SS models equipped with a ZZP PCM, Cold Air Intake (CAI), cooler spark plugs/thermostat, and a bolt-in downpipe. * **3.5" Pulley:** For '01-03 GTP/GS models with ZZP PCM, CAI, cooler plugs/thermostat, and bolt-in downpipe. Also for '04+ Grand Prix supercharged, '00+ SSEi/Ultra, '04+ Monte Carlo/Impala SS with 1.9 rockers, ZZP PCM, CAI, cooler plugs/thermostat, and exhaust work. * **3.4" Pulley:** Suitable for '97-00 GTP/GS with ZZP PCM, CAI, cooler plugs/thermostat, and bolt-in downpipe. Also for '01-03 GTP/GS with 1.9 rockers, ZZP PCM, CAI, cooler plugs/thermostat, and bolt-in downpipe. * **3.3" Pulley:** For '97-00 GTP/GS with 1.9 rockers, ZZP PCM, CAI, cooler plugs/thermostat, and bolt-in downpipe. Also for '01-03 GTP/GS with VS/XP cam, ZZP PCM, CAI, cooler plugs/thermostat, and bolt-in downpipe. * **3.2" Pulley:** Recommended for '97-03 GTP/GS with an SS intercooler, ZZP PCM, CAI, cooler plugs/thermostat, and bolt-in downpipe. * **3.0" Pulley:** This size requires larger fuel injectors and either a full-size intercooler or an SS intercooler, along with a cam or rocker setup. Attempting to go two sizes smaller than stock without a tune can lead to hitting the factory boost limiter, causing overboost codes and potentially putting the vehicle into limp mode. A tune is often necessary for optimal performance and to avoid issues when using smaller pulleys.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

Brand	ZZPerformance
Part Number	ZZ-MPS38-3.0-BLK
Category	Engines and Components

Videos

How To: Supercharger Pulley Puller and Pulley Installation | ZZPerformance

How To Select Your 3800 Pulley Size | Behind the Builds | ZZPerformance

Pontiac Fiero 3800 HOW TO: Changing The Supercharger Pulley Using The ZZP Pulley Puller

ZZP Underdrive Pulley Install 3800 Grand Prix GTP

3800 Supercharged Top 5 Mods | ZZPerformance

ZZP 3800 Intercooler Core Stage 2.5

2003 Pontiac GP GTP Limited Edition | ZZP 3.8" Modular Pulley

Project XP Cam, ZZP CNC Heads & ZZP 2.25 Intercool

Why You DON'T Need a Smaller Pulley // Behind The Builds

Choosing Your Exhaust Size // Behind The Builds

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