FAST LSXHR - (CATHEDRAL-103mm) BLACK 146303FAST LSXHR (CATHEDRAL 103mm) BLACK 146303 FAST is expanding their line of the industry first polymer tunnel ram style intake manifold, ideal for generating maximum power in boosted and naturally aspirated GM Cathedral Port LS engines. The FAST LSXHR 103mm Intake Manifold is ideal for generating maximum power in boosted and naturally aspirated GM LS cathedral port engines. It ships with a set of tall removeable velocity stacks, however medium and short

OE GM lifter trays (set of 4) are available as an optional upgrade

and L99 applications will require taller brackets and adapter O-rings (lower) to be used with EV1 injectors

Part Number CC26915-16 Part Type Valve Springs Brand COMP Cams Engine Type Gen III/IV Max Lift

The Texas Speed & Performance Gen V DOD delete kit will allow you to remove DOD/AFM from your Gen V 6

582" 112 LSA Factory Fuel Lobe

Includes a pre-terminated CAN Harness allowing you to quickly install the Holley EFI CAN module to any existing Holley EFI installation

and an excellent choice for supercharged or turbocharged (forced induction) applications

Kit Supports Gen IV engines with drive by wire (DBW)

OEM Delphi (connector

For those and other aftermarket cylinder heads

Large Brake Clearance for 1999-2014+ Trucks*

Katech Billet Belt Tensioner for GM Truck (Silverado