I was wondering what kindof effect having heads that are not in very good shape would do when using nitrous. When i say heads that are not good i mean the valves. I was told way back when that i needed a valve job on my heads from a dealorship. The car has 125,000 miles on it. And probably does need new valves, but i was wondering if it's safe to run nitrous on a car with some bad valves and how it would effect it, besides not getting all the power. How much do you think it would cost to re-build the heads with new valves.....as in parts

 

I would worry about getting any problems worked out before i started putting more mods on my car. Do you have any problems that might indicate you needing a valvejob. Just because the dealership says you should do it, doesnt mean it should be done.

If you tear your heads off, you might as well save up the money for a cam and have your heads ported. No sense in doing it twice

 

Yea I'm not going to re-do these heads. I am sure the valves and springs are worn, as with any high milage motor.....i was just wondering if there are any adverse affects to a weak valvetrain, say on a 130,000 mile set of heads and springs.