3300 Intake + Header Port & Polish

[pokesmot]

did some searching through the forums in regards to getting a port & polish.

There isnt much pertaining to the 3300's, so thats why I am going to ask...

I already know that port and polish will generally increase flow in the engine resulting in more horsepower... but how will that affect fuel consumption?


should I do a port and polish on my heads and intake manifold? or just the heads?

has anybody else had this done, and is it worth the work / effort?

is there anything else I should be aware of while doing this?

right now im just in the pondering stage... not completely serious about this, just curious... so any information would be greatly appreciated!

I still have the intake manifold and heads off my old engine, so I can get those port & polished and then just swap them in and replace all the gaskets in about a day :D

[PontiacGA]

I thought about doing this also. I'm not really concerned about gas mileage, since it's a fair weather car. :D I think if you get that done, the exhaust manifolds could use some porting too. But, like you, would like to know if this increases HP enough to cover the price.

[Azrael]

If you're a leadfoot you'll see a slight decrease in fuel economy. The more air that gets into an engine the more fuel has to go in with it to keep a good air/fuel ratio. Generally, porting everything is the best option if you want all out power.

I'm not familiar with the 90*V6's though so I'm not sure what the intake manifolds are like and whether they need much in the way of porting.