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Optimise your engine’s induction with this professionally modified twin SU intake manifold. Specifically reworked at CCK Historic to eliminate the flow restrictions found in standard castings, this manifold is an essential upgrade for any high-performance A-Series engine running twin carburettors.

Product Specs

• Engine Compatibility: BMC / British Leyland A-Series (998cc, 1098cc, 1275cc)
• Carburettor Fitment: Twin SU (HS2, HS4, or H4)
• Design: Precision-modified original or performance casting
• Internal Finish: Port-matched and gas-flowed for maximum efficiency

Why Choose This Modified Manifold?

• Improved Volumetric Efficiency: Internal casting marks and "steps" are removed to ensure a smooth, high-velocity air path into the cylinder head.
• Balanced Induction: Precision-worked to ensure equal airflow across both intake runners, resulting in more consistent tuning and smoother power delivery.
• Throttle Response: By reducing intake turbulence, this manifold sharpens throttle response and improves mid-range torque.
• Proven Performance: This modification is based on years of A-Series racing experience, designed to extract the best from your twin SU setup.

Installation Tip: To gain the full benefit of this modification, we recommend "port-matching" the manifold to your cylinder head's intake ports. Always use a new, high-quality intake gasket to ensure there are no vacuum leaks that could disrupt your idle or carb balancing.

Key Point: Gas-flowed and port-matched in-house to unlock the hidden power in your twin SU setup.