Stage 1,2,3,4 head job

[gijoe985]

Anyone know and good links that would explain what gets done during each of these states and about how much each stage would flow?

This has been useful...

 

[90laserRSfwd]

depends who did the head, SBR, Polk, FFWD, DSMparts, etc.. everyone's different

 

[gijoe985]

depends who did the head, SBR, Polk, FFWD, DSMparts, etc.. everyone's different

If anyone has flow numbers on these I'd love to see them. I think I've found all of the other flow numbers already on the forum. Polk has some great posts.

 

[GVR4592]

You aren't going to find flow numbers for many heads. Some of the vendors post vague flow numbers but they don't specify which "stage". Are you trying to decide which vendor to buy from, because that's an easy question to answer.

 

[gijoe985]

Realistically I am just researching. I am curious what people are getting. If anyone has their personal flow numbers (I know that's not common) I'd love to see or hear about them. I'm just interested. I'm also curious because if I did a mild porting job on my own heads and got them tested, I was wondering how much improvement I could make and how far I'd be from the pros. Polk's posts definately gave a good benchmark.

 

[GVR4592]

Well let us know what you come up with.

 

[all_motor_mike]

my numbers wer 270 cfm intake 240 cfm exhaust @ 28" and .500" lift


mike

 

[90laserRSfwd]

how much power your trying to make, and what you want your car to do is where you should start before looking into any stage head.. I don't think if your looking to make 300whp a stage 5 head is going to be a worth while investment you know...