Dr. Denny Porting and Polishing Services

Port and polish frequently asked questions

Q. How do I get my head(s) to you?
A. If you are within 200 miles, I'd say drive them here. Otherwise use UPS or a trucking company.

Q. Can I send my head(s) uncleaned or untested?
A. We highly recommend heads be tanked and magna-fluxed to check for cracks, that way many problems can be avoided.

Q. What is port matching or gasket matching and do I need it?
A. It's hard to tell without having your manifolds and gaskets here with your heads. Port matching is simply aligning the ports in the head with the manifolds, while removing any gasket material that gets in the way.

A completed Dr. Denny port and polish job

Q. Should I have my valve seats finished before the porting or polishing process?
A. Yes, that way we can shape and contour the valve bowls to match your seats.

Q. What if I have an old car like a Rambler or a Corvair or Dodge Dart, can they be ported, and is it worth while?
A. Yes! The power and RPM gain is like day and night. We've seen mileage increases of 50%, and RPM gains of 2,000 RPM. It's all about unleashing the potential.

Q. Do I need both porting and polishing?
A. Almost always the answer is definitely yes.

Q. Can you do one without the other?
A. Certainly. It's your call to make.

Q. Can I get a quote by phone or e-mail?
A. Yes. After we have looked over your heads.

Q. How much horsepower can my V-8 gain?
A. Anywhere from 25-150 horsepower

Q. What about gas mileage?
A. You will have more potential for fuel economy if you lighten up on that gas pedal and stop using that 25-150 extra horsepower.

Note the difference between the left and right sides of this job in progress.

Q. How long does it take to port and polish?
A. Usually between one day and one week.

Q. Can you port and polish based on by budget?
A. Yep! In the end we will give you more than your budget allows, (more bang for your buck), but yes, it will usually be based on your budget.

Q. When it comes to polishing, is shinier better?
A. Not always. It depends on where. Some places yes and some no.

Q. What if I still have questions?
A. We'll answer them! Contact us here.