In the burn out video my cutout was open- other Than that I have a 3" hooker aero chamber dumped over the axle- for the milling I paid 50 dollars a head at a local shop.

I don't think it's worth changing pistons, plus if boost is still in your future definitely not. I'm nervous to run more boost and I'm only running milled heads.

 

costs about $100 for both heads out here

 

trxmxzx how much did you have your heads milled and what gasket to end up with for what cr?

It looks like 0.030 for 10.1 and 0.050 for 10.5 does this sound right? Has anyone taken 0.050 off, if so are there any issues with the intake or accessories lining back up?

 

.035 ran stock thickness head gasket- when I did my research .042 was max for intake fit issues- mine was tight at .035. For CR I don't remember what it came out to. I know in the past 6 months there was a thread someone started about milling 243 and someone had a calculation for every .010 you take off you go up xx.xx in cr

 

The following info is from a post that "grey matter 04" made back in 2011.

"So you want to figure out how much to mill:

It takes about .005" milling of the block deck to remove 1cc of volume. It takes .007" milling to remove 1cc from an LS1 head

Simple Milling Math:

You have a stock 66cc chamber and you want to get down to 63cc

66-63 = 3. You have to remove 3cc's

.007 x 3 = .021. So to get your 66cc chambers down to 63cc you'd have to mill ~.021.

You can also do the reverse, say you want to mill a head .030 to figure out how many CC's that removes you take .030 / .007 = ~ 4.28. Milling a stock 5.7 head .030 puts your chamber at ~ 62."

 

Thanks for the milling info i've seen it while reading through here but was having trouble finding it again.

If I do the math right I can take off .035 from the heads and use a stock gasket to get roughly 10.0:1 and not worry about everything fitting back together, flat top pistons would bring it up to roughly 11.0:1 so would it be worth $200-$600 depending on if I reuse bearings and rings for the higher compression ratio? No boost or NO2.

 

Nevermind, 11.0 is too high for the 91 pump gas I can get here and I dont want to have to add octane booster every time I fill up to avoid pinging.

 

I usually figure .006" mill per each cc. Let's compromise and say between .006" to .007" depending on the head.

 

You're welcome.