PRC 5.3 2.5 to mill or not?
11-03-2008, 09:38 AM
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PRC 5.3 2.5 to mill or not? I have a full bolt on + cam M6 z28. Next step for me is to get the PRC 5.3 2.5 heads. I would like to hear the pro's and con's of milling probably 10mm.
I live in MN, drive it only in the summer, 92 octane is the highest we have in MN.
I live in MN, drive it only in the summer, 92 octane is the highest we have in MN.
11-03-2008, 09:51 AM
#2
What camshaft are you running?
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11-04-2008, 09:11 AM
#5
Did you mean 10mm? Because that's ALOT of milling (about .40")! You should be able to mill those heads about .015" or so without piston to valve clearance issues. That will give a nice little bump in compression which will help your throttle response and mid-range numbers.
I personally would go with a .040" gasket instead of milling. You'll achieve roughly the same compression results, but with a better/tighter quench which helps ward off detonation issues.
I personally would go with a .040" gasket instead of milling. You'll achieve roughly the same compression results, but with a better/tighter quench which helps ward off detonation issues.
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RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
11-04-2008, 09:38 AM
#7
Typically the thinner gasket is a little bit better than the milling. The good part of milling is it costs way less than Cometic gaskets... We typically like to run the cometic .040" when there's enough room!
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Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
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11-04-2008, 04:22 PM
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Id go with a thinner gasket. You are someday going to want to run a larger cam, and when you do you dont want to have to worry about getting it flycut, like me...
11-05-2008, 11:39 AM
#11
11-08-2008, 03:05 PM
#18
