Performer RPM Style Carb Intake Manifold for LS1 5.3L / LS2 6.0L Cathedral Port Black

Performer RPM Style Carb Engine Intake Manifold, Cathedral Port, Black, designed for LS1 5.3L and LS2 6.0L engines. Made from high-quality aluminum with a durable black finish, this dual-plane design supports carbureted or throttle body EFI setups. Compatible with 4150 square bore carburetors (up to 1.75" diameter throttle bores), it features rectangular ports measuring 2.72" x 1.00", a 3/8" NPT vacuum port, and a 1/8" NPT MAP sensor port. Intake height measures 6.15" front and 5.07" rear from valley cover to carb base flange, and it operates optimally in the 1,500–6,500 RPM range. This manifold offers reliable construction and improved airflow, providing a straightforward performance upgrade for LS engine enthusiasts.