chamber cc and milling has an effect on flow numbers and port velocity?
Registered User
Joined: Jan 2001
Posts: 368
From: Indianapolis, IN
Re: chamber cc and milling has an effect on flow numbers and port velocity?
I'm by no means an expert in this department but I've talked to a few builders about this and the short answer is yes. I've also been told that the LS1 is much more sensitive to milling of the heads and that you can lose significant flow if it is not done properly or you go too far. FWIW
Registered User
Joined: Oct 2001
Posts: 2,684
Re: chamber cc and milling has an effect on flow numbers and port velocity?
AFR says that too, and I have a hunch that is the reason that people don't see the advertised flow numbers with their LT1/4 heads because they cut them down to 56cc from 72cc castings for the LTx engines unless you ordered them larger.
Registered User
Joined: Oct 2001
Posts: 2,684
Re: chamber cc and milling has an effect on flow numbers and port velocity?
Originally Posted by Fbody1
does this apply to stock heads, so putting bigger valve's and milling them down to 52 cc was not a good thing?
Registered User
Joined: Nov 2004
Posts: 1,374
From: Raleigh, NC
Re: chamber cc and milling has an effect on flow numbers and port velocity?
I was always under the impression that milling heads would shroud the bigger valves and hurt air flow. Could be wrong though.
$.02
Jeremy
$.02
Jeremy
Registered User
Joined: Oct 2001
Posts: 2,684
Re: chamber cc and milling has an effect on flow numbers and port velocity?
I guess you would have to do it and find out whether the net gains outweigh the losses. It's hard to come to a conclusion just talking about it in general terms.
Advanced Tech Moderator
Joined: Aug 2001
Posts: 2,262
From: Nashville
Re: chamber cc and milling has an effect on flow numbers and port velocity?
If people are going to make a post in someone's thread please make it regarding the topic they are discussing or asking for help on. If you would like to talk to someone regarding off topic things please do so via private message or email to them.
Thank you
Thank you
Registered User
Joined: Oct 2001
Posts: 2,684
Re: chamber cc and milling has an effect on flow numbers and port velocity?
Originally Posted by kmook
If people are going to make a post in someone's thread please make it regarding the topic they are discussing or asking for help on. If you would like to talk to someone regarding off topic things please do so via private message or email to them.
Thank you
Thank you
Advanced Tech Moderator
Joined: Aug 2001
Posts: 2,262
From: Nashville
Re: chamber cc and milling has an effect on flow numbers and port velocity?
Originally Posted by Kevin Blown 95 TA
Ken, what do you mean? The entire thread is about milling heads & flow, and the thread starter was just asking opinions. Seemed like a good, legit discussion to me.
Thread Starter
Registered User
Joined: Jul 1999
Posts: 211
From: craplanta ga
Re: chamber cc and milling has an effect on flow numbers and port velocity?
Im trying to figure this out...Man i wish i was still in philadelphia or jersey...Had a free machine shop up there and head shop...
Im guessing that The flow loss has to do with cylinder filling and may get better if you angle mill instead of flat mill.Im at a loss on this one myself.
I wish chuck was still around here as im sure he would know...Ive lost his email addy a while back.
Im guessing that The flow loss has to do with cylinder filling and may get better if you angle mill instead of flat mill.Im at a loss on this one myself.
I wish chuck was still around here as im sure he would know...Ive lost his email addy a while back.
Thread
Thread Starter
Forum
Replies
Last Post