![]() A Stage IV port and polish will run you somewhere around $750. This stage includes all of the above plus a fully ported exhaust, bowl ported and port matched intake and more precise profiling of the combustion chambers. This stage is almost essential for those running nitrous or high-pressure turbochargers, or superchargers. ![]() Stage IV: Most hot rod drivers opt for this higher stage of port and polish. A Stage III port will generally include porting of the bowls, a port match, and complete profiling of the combustion chambers. This procedure blends all of the castings in the head for drastically improved air flow. It costs about $550 and, due to the law of diminishing returns, also ends up being the best value port and polish to get. Stage III: A stage III port is really the minimum ‘full port and polishes’ you can get. This port and polish stage includes bowls and intake opening port match. Stage II: This is generally around $300 and is coequally known as a ‘street’ or ‘strip’ port job for drivers on a budget. This is just the minimum recommended porting stage and includes a bowl port and port match. Stage I: This most basic form of porting and polishing generally costs about $150. There is, however, a community of shops that maintain somewhat standard pricing for traditional V-8 cylinder head pairs. Generally, you have to get a quote based on your engine. Pricing is all over the place for engine porting. If you get a port and polish, you can expect a performance increase of somewhere between 25 and 75 horsepower. This type of port and polish costs about $500, depending on the type of vehicle you have. A Stage III port and polish, however, is generally the best value and provides the most performance for your money. The cost for the procedure can vary widely from as little as $200 to more than $2000 dollars. Porting and polishing a head provides this effect for the air/fuel mixture at higher RPMs. When your engine can take in more air, it can also burn more fuel.īurning more fuel means producing more power. Porting and polishing your vehicle’s cylinder head is an effective way to increase high-RPM air flow into your engine.
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