EvilBreed#13

iTrader: (1)

I have a 2000 firehawk m6. I want to buy some patriot stage III heads that have been milled from 64cc to 59cc. The valves on them are 2.08.

3.4camaro

iTrader: (1)

No they are not too much. Your cam will have a bigger part in determining what is "too much."

Websy21

iTrader: (34)

yes they are, buy them and trade with me. I'll give you my stock 01's they perform so much better the the 00 castings

EvilBreed#13

iTrader: (1)

would these heads work well with the ms3 or the ms4 cam?

silver01z06

depending on the size of the valves they could be to big. just because they might bolt on doesnt mean they arent to big. i believe 2.02 is the biggest valve you want on stock bore size. air will not flow as well into the cylinder if the valve is to close the cylinder walls

Websy21

iTrader: (34)

yes those heads and the ms3 would work well up top but be a dog down low, its whatever you wnat. Do a search on these heads and cam, I can assure you will find alot on info on them

EvilBreed#13

iTrader: (1)

this wouldn't raise my compression too high?

Tainted

iTrader: (9)

the heads are only 1 thing that deterines compression ratio, flycutting the pistons and gasket thickness and other things are to be taken into account

davered00ss

iTrader: (4)

Not sure you can use those heads with that cam without fly cutting. check with Patriot. They are a board sponsor and verry willing to help.

The Alchemist

iTrader: (19)

I'd bet that you would need to flycut to use those heads with that cam. Aftermarket valves stick into the combustion chamber further, add in larger diameter valves, and that the heads were milled probably 0.035", and you will have some PtoV clearance issues. Can it work, maybe, but chances are good that you will be very close to eyebrowing the pistons.

Flycut the pistons, and then you can run the cam, and use a 0.040" gasket to raise you dynamic compression which will help the low end and raise your torque numbers.

3.4camaro

iTrader: (1)

MS3 is a cam designed to be the biggest cam you can put in an otherwise stock engine without flycutting. The bigger valves, and probably milled heads, will require flycutting. No biggie. The MS3 will pull like a mother.

orangeapeel

iTrader: (18)

I would consider porting your stockers and running an MLS stock headgasket with 0.005 milling just to clean up. You should be ok with that, technically, but you sure want to measure and make sure.