99blancoSS

iTrader: (115)

So your saying if you dont fly cut you cant have proper compression??!?
OR are you just applying that to this application only? The way it was worded was that you need to fly cut to gain proper compression and that is not true of all setups. I was being a smartass and was waiting for n4cer to explain it.

Some people dont put a whole lot of weight into exacting the DCR and think its importance is exagerated on here. Thats a quote from a well respected builder and sponsor on this site. I run a 234/240 with .637 .640 lift on milled heads.

brad8266

iTrader: (23)

Probably just applying it to this application. You certainly can get the compression you want without flycutting, but you have to change other things.

DCR has maybe been overhyped, yeah a few tenths of DCR isnt much to fret over. You can always refer to Pat G's setup which has outstanding HP numbers both up top and down low. he did this by maximizing DCR and pretty much matching everything up to work together. To me thats what its all about, making big power everywhere so you can have a nice street car that still whoops *** at the track.

fastest94v6

iTrader: (10)

Ok got some info. from the seller on these....he said there only 2.02 on the intake and stock exhaust with the .015 mill....does that make a difference?

brad8266

iTrader: (23)

Yeah it does, the smaller the valve the more room you have to safely mill.

fastest94v6

iTrader: (10)

would i still have to flycut?

PREDATOR-Z

What if you get 50 poeple saying NO. Will you take their word for it?

you better measure, no one can give a definite answer.
And fitting doesn't mean it has proper clearances. For street .080/.100 if you do not want to your pistons one day.

fastest94v6

iTrader: (10)

thats true....

PREDATOR-Z

Look Ferrea valve has .020 less PTV than stock in deck thickness alone, not to mention it is bigger, add .015 to that and that makes it .035 at least less PTV.
Even if that cam cleared with .100 on stock valves unmilled, that will only leave you at .065 clearance,
(Valve please meet Mr. piston)
just my 2 pennies

99blancoSS

iTrader: (115)

Listen to Predator here and check it. Its not a big deal to clay it crank the motor over by hand and see what you have. You need to be safe when you are buying milled heads. And in this case it really is no big deal. Your replacing the heads so you'll have them off anyway. Most people dont want to do this because they are just doing a cam only and dont want to pull the head as its more work. You dont have that excuse.

fastest94v6

iTrader: (10)

i understand your trying to look out for me.....I do appreciate it. Please pardon my ignorance, but what is claying?

brad8266

iTrader: (23)

read this http://www.centuryperformance.com/piston2valve.asp

Phil'sC5vette

iTrader: (4)

How about this. AFR heads milled -.020 off using the stock GM gaskets and the TQR 2 on a 112? any issues?

brad8266

iTrader: (23)

I think thats fine, Pat G's setup has AFR's milled way more than that but his cam is smaller. The only real way to find %100 out is to clay the engine.