milling stock heads
Thread Starter
Pro
Joined: Feb 2006
Posts: 587
Likes: 0
From: Toronto Ontario
milling stock heads
I got a 2003 Z06. The car has LG street headers catless with borla stingers. I also got a cam the specs are 230/228/591/591 112lsa. How much can i mill the stock heads? Thanks guys
Rob
Rob
Instructor
Joined: Oct 2006
Posts: 198
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From: Orlando FL
You could probably mill them .025 -.030, but as stated above it's not really worth it unless the heads are off for some other reason. Aftermarket cams can have a few degrees of error in them so always check for P-V clearance with eack individual application.
Safety Car
Joined: Apr 2007
Posts: 3,582
Likes: 137
From: SoCal CA
I dont think the stock heads give you enough valve clearence for that. Personaly I went with TFS heads, which are 13degree heads, and milled them to 60cc.
Premium Supporting Vendor
Joined: Dec 1999
Posts: 1,984
Likes: 19
From: Texas Speed TX
We do extra milling in our stage 1 cylinder head setup all the time. I'd expect you could hit them .020" or so at it's best. If your looking for some extra power we offer cnc porting/valve job & decking of customers ls6 heads for $600!! It'll probably cost you 75-100 just to mill them, so $600 is a pretty reasonable investment for a 20+rwhp gain over stock ls6 heads.
http://www.texas-speed.com/shop/item...d=649&catid=20
http://www.texas-speed.com/shop/item...d=649&catid=20
