CNC head porting

[autronicDSM]

Who offers CNC porting and also allows you to supply your own parts like valve springs and camshafts?

 

[Staytuned]

I am sure most places would allow you to send your preferred internals to install. I would check into Jackson Auto Machine, they are a site sponsor here on tuners.

 

[Big Woo]

JAM offer CNC porting, and I was allowed to send them my springs, retainers, lifters, and cams.

 

[PrimedTsi]

Polk Performance does very good CNC work too.

 

[autronicDSM]

I thought about JAM. Are there any flow numbers on their CNC head compared to stock?

 

[Staytuned]

I don't know of any flow numbers but this pic of the work they do sure did impress me.

http://www.jacksonautomachine.com/html/testing/index.html

 

[autronicDSM]

 

[playitlouddsm]

I sent my head to them last summer and i was very impressed when i got it back.

 

[BaddAssGst]

Are you rolling your eyes because of what StayTuned said? I don't know about you but I can look at that picture and tell that they do excellent CNC porting work. I can also look at the picture and tell you that it flows much better then stock.

 

[autronicDSM]

I can polish a turd to look impressive too! Looking at the picture does't tell you everything other then that it has bigger ports. What if ports are too big for what I want to do with my car and it loses significant throttle response? After all they call it a "race" head.

Treebunker, do you have their stage 1 now? If you do send me a PM, I want to ask you some questions. Thanks.

 

[Staytuned]

With a big 16G as your turbo in your profile I wouldn't waste my money on a CNC port job. I would go a stage 1 or 2 job with new internals and a good set of torque happy cams.

 

[autronicDSM]

It's not a waste of money. New turbo can follow the new head.

 

[nanokpsi]

My vote is for Polk Performance. I know flow numbers are just that, but my communications with Don over at polk show their CNC stge 4 head flowing 325 cfm on the intake. This is for a 1g head. You can also supply your own valvetrain parts as I am sending him my supertech springs/retainers and valve stem seals. Good stuff from Polk