How much does it cost to port and polish cylinder heads?

The cost to port and polish cylinder heads typically ranges from $300 to $1,200, depending on the complexity of the work, the type of engine, and the shop's labor rates. Basic porting may be on the lower end, while more extensive modifications and polishing can push the cost higher. Additional factors, such as whether you need new valves or springs, can also affect the total price. Always obtain quotes from reputable shops for the most accurate estimates.