1978-1987 Grand Prix Velocity Series LS1/LS2/LS6 Hi Ram Intake Manifold, Clear Anodized, 102MM 81002TCA

Top Street Performance designed their fabricated aluminum sheet metal intake manifold to improve the look and performance of your LS powered Grand Prix. It features a 102mm throttle body opening for maximum air flow. The runners are velocity stacked, allowing air to move more smoothly at high velocities. The manifold is constructed of 3.5mm thick T-6061 aluminum and is TIG welded to ensure consistent strength and performance. Individual port o-rings guarantee a good seal with the cylinder heads and throttle body. The first thing people notice when taking a closer at these intake manifold is the beautiful TIG (tungsten inert gas) welding throughout - all done by hand. This ensures solid construction that won't fail under stress. The head flanges are 7/16" thick, and the plenum is constructed of 3.5mm T-6061 aluminum, which means it can easily handle up to 25 lbs of boost - more than enough for most street performance applications. In addition to the premium build quality, these fabricated manifold include intelligent design features that set it apart from the rest. A 102mm throttle body opening and velocity-stacked intake runners guarantee maximum airflow for high-horsepower applications, and individual port o-rings ensure a tight seal to your cylinder heads. A recent improvement places a MAP sensor bung on the rear of the manifold.

Features and Specifications:

• Injection Style:Multi-port
• Fuel Rail Type:Custom TSP Design
• Fuel Rails Included:No
• Throttle Body Bore Size:102mm
• Throttle Body Bolt Pattern:Standard OE 4-Bolt Pattern
• Throttle Body Flange Angle:0°
• Throttle Body Included:No
• Flange Material:T-6061 Billet Aluminum
• Plenum Thickness:3.5mm
• Plenum Material:T-6061 Sheet Aluminum
• Vacuum Ports:NPT 1/8 x 3 and NPT 1/4 x 1
• Map Sensor Bung:Yes (Sensor not included)
• Overall Height:9"
• Included:Port O-Rings and Hardware

Manufacturer Part Number : 81002TCA

Part Notes:

Fits LS-based engines with "cathedral" intake port shape only. Due to transverse engine configuration, fitment on LS4 would require significant modification. Bung designed for LSA/LS9 style MAP sensor (GM #12592525).