Head Milling

[wcngt]

Hey guys I was recently inspired by the budget build up in MM&FF. I am going to re ring my motor and I thought about milling my gt40p heads 30 thousands to bump up my compression. Will I have to mill the intake as well? What will it do to the valve geometry? I have a TFS stage 1 cam in it now so my roller rockers are shimmed already. any suggestion or answers are appreciated thanks. Will

 

[94 DropTop]

i thought the p's already had the small combustion chambers

 

[RED guy]

I dont think its a good idea my frind milled his head after he had a temp problem

 

[fastgtfairlane]

it wouldnt be a bad idea since the heads are already off the car. i would ask the machinist how much it will raise your compression and if you will have to mill the intake manifold too. i believe the p heads have 60-62cc chambers factory. hell if you had time and had tools i would do some work to the exhaust ports too.