Performance Design Carbon pTR – LS3 Manifold 105mm (Long Runners Installed)

Performance Design Carbon pTR Intake Manifold – LS3/LS7/Cathedral

The Performance Design Carbon pTR Intake Manifold delivers lightweight strength, modular flexibility, and high-end performance in a true tunnel ram architecture. With its carbon fiber plenum and glass-reinforced nylon lower manifold, this intake is engineered to maximize airflow, reduce heat soak, and adapt to your engine’s powerband.

Fitment:

• Port Style: LS3
• Throttle Body: 105mm forward-facing flange (standard LS bolt pattern)
• Mounting: Reversible orientation for custom engine bays

Design Features:

• Modular Velocity Stacks: Interchangeable 6.5″, 8.0″, and 9.0″ runner lengths (6.5″ included)
• Plenum Material: 5-layer carbon fiber with foam core flange and high-temp epoxy
• Lower Manifold: Lightweight PA6GF30 glass-filled nylon resists heat soak
• Sensor Ports: Two MAP sensor provisions (front and back)
• Vacuum Ports: Two 1/4″ NPT ports and one 1/2″ NPT port (brake booster, IAT, etc.)
• Injector Support: Provisions for short, mid, or tall injectors
• Nitrous-Ready: 16 nozzle bosses on both sides of each runner
• Throttle Flange: Anodized billet aluminum (red or black standard; custom colors optional)

Performance Highlights:

• Tuneable Power Curve: Customize runner length to match your cam, heads, and exhaust
• Runner Strategy: Long runners = midrange torque; short runners = high RPM power
• Weight Savings: Over 10 lbs lighter than typical aluminum tunnel rams
• Thermal Control: Carbon and nylon combo minimizes heat transfer for cooler intake temps

What’s Included:

• Carbon fiber plenum with 6.5″ velocity stacks pre-installed
• Glass-filled nylon lower runner assembly
• Stainless steel mounting hardware
• Molded port, plenum, and throttle seals
• Billet throttle flange (red or black)

The Performance Design Carbon pTR is perfect for LS-based hot rods, drag builds, or street performance setups that demand serious airflow in a lightweight, heat-resistant, and fully modular package.