For LS1 Cathedral Port Cylinder Head to LS3 LSA ZL1 CTS-V Supercharger Adapters

Cylinder Head Adapters for LS1 to LS3 Supercharger

These cylinder head adapters let you mount an LS3, LSA, ZL1, or CTS-V supercharger onto an LS1 cathedral port cylinder head, giving you a clean path to forced induction without swapping heads.

Overview

These cylinder head adapters bridge the gap between LS1 cathedral port heads and LS3, LSA, ZL1, or CTS-V supercharger intake flanges. They are made for builders running an LS1 bottom end who want to bolt on a later-model supercharger setup without changing cylinder heads. Each cylinder head adapter set is designed to seal the port transition and hold up under boost.

Built For Performance

• Adapts LS1 cathedral port heads to LS3, LSA, ZL1, and CTS-V supercharger flanges
• Machined flanges for a flat, consistent sealing surface
• Billet or cast aluminum construction for strength under boost
• Retains factory bolt spacing on both head and supercharger sides
• Sold as a matched pair for both banks

Fits These Machines

• for Chevrolet LS1 cathedral port cylinder heads
• for Chevrolet LS3 supercharger intake
• for Chevrolet LSA supercharger (ZL1, CTS-V)

On-The-Job Use

• Supercharger installs on LS1 short blocks
• Boost builds where factory cathedral port heads stay in place
• Custom intake fabrication and port matching

Specs At A Glance

Good To Know

Q: Will these adapters work with my factory LS1 heads? A: Yes, they are made to bolt to LS1 cathedral port heads and present a supercharger flange on the other side. Port matching and gasket selection should be checked before final install.

Q: Do I need different bolts or gaskets? A: Hardware and gaskets are not included, so you will need to source them for your specific supercharger and head combination. Check clearance and torque specs during assembly.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.