hansomeden

I have a LS1 6m with Dart 205 as cast heads 226x230x14 cam FAST102 making 415 rwhp.at 2,000 ft. on a 95 degree day.
How much more power would I make with the heads cnc ported or how much more if I changed to a set of AFR heads.

HCI2000SS

iTrader: (2)

Which afr heads? I'm guessing you might gain 20-30 hp from what I've read

sbf

send your dart 205 to advanced induction for half the money of the afr heads.

Rise of the Phoenix

iTrader: (27)

I run the AI Dart/RHS CNC'd heads. They are bad ***. They keep making power to .700 lift. Ed Curtis always said the Dart heads are great when lut in the hands of someone who lnows how to port.

vettenuts

iTrader: (4)

I guess the question is how much are the AFR's vice a round trip air fare for the Darts to someone who knows how to port them. I would agree with AI but the shipping cost might play a major role in any decision.

Rise of the Phoenix

iTrader: (27)

$895 to have AI port your Dart heads. I assume that includes them shipping them back to you, so add another $50 to ship them into AI and you're only out about a grand.

Rise of the Phoenix

iTrader: (27)

OP, here is a link to what I was talking about. I know flow numbers aren't the "end all, be all", but the flow numbers are really good and I trust anything AI puts their machines on.

http://www.advancedinduction.com/LSX...ccDartHead.php

Fry_

I think vettenuts is pointing out that the OP lives in Australia so round trip shipping my be prohibitively expensive.

Rise of the Phoenix

iTrader: (27)

Didn't see that's where he lives.

LilJayV10

iTrader: (39)

If you go w/ AFR's you might want to change the cam too due to AFR's strong exhaust side and liking single pattern cams. There's an old thread where a guy switched for AFR heads and wasn't happy with the power he picked up. Tony Mamo eventually came into the thread and said it was because of cam selection.

Just thought I'd through that out there.

It sounds like getting your Darts ported by someone who knows what they are doing might be the best bet.

Jase01

Hansomeden,
You're in SEQ, there's good cylinder head porters and performance shops locally here who could do some hand porting for you and make good gains or send them down to Higgins for CNC work. If you're going to ship them to the US and back plus the cost of CNC porting them, a set of AFR's would nearly be more economical.