A chrome ram-horn exhaust manifold for the Chevy Small Block Gen I, replacing the factory manifold with a square-port design that improves exhaust flow within the stock manifold footprint.

Manifold Specifications:

• 1.625 in. primary tube diameter with a 2.25 in. collector outlet.
• Square-port flange with an oxygen sensor port and 6 mounting holes.
• Steel construction with a chrome finish.
• Mounting hardware and gaskets included; not CARB compliant.