JonCR96Z

iTrader: (33)

This is just stupid.

Read what I wrote, you dumb ****. I said ported stock castings. Which are even advertised as 220 or bigger.

Most cars on this board that have heads have ported 5.3, LS1, LS6, or 6.0 heads with an intake runner in the 220-230 range. They would be better off with a big runner AFR, TrickFlow, or ETP. Price is usually the deciding factor in those cases though. But to say that 225s are for 4.0 and bigger is absolutely retarded and completely untrue.

DannoWS6

iTrader: (5)

I think you may be commenting on what I said. My comment was not that anyone can make 800HP w/ a 205 head but, that the limiting factor in making that power wont be the runner size. A 205 will move enough air to "support" 800hp, N/A or FI.

DannoWS6

iTrader: (5)

You need a new rocker stand to accomodate those heads. Your only talking $100 or so. But I also think you need aftermarket rocker's too. ETP's I think you can get away with just the stand, although I am not 100% sure.

slow trap

iTrader: (22)

i also think either an afr 205 , tfs 215 or etp 215 would be a better option on that 3.9" bore. i would flycut and run an .040 gasket and mill accordingly to raise your scr/dcr. if 93 is availably you should be able to easily run 8.5 or alittle more dcr so your scr will probably be well over 11:5.

VIPERBLUELX

iTrader: (2)

I local guy is running the 225's on a stock LS6 shortblock with Vindicator cam and FAST 92 setup and it put down 415rwhp on a Mustang Dyno.

SOMbitch

iTrader: (8)

Your gonna have to get pushrods anyway. The deal with TFS heads are that you cannot run stock rockers and MUST go aftermarket Yella Terra, Harland Sharp etc.. Think another $400 on top of a $2400 set of heads. If money was no object I would go TFS. AFR, ETP, TFS are all great heads though and you can't go wrong with any of them.

Dragkid1917

iTrader: (2)

humm, Im not gunna do heads unless i do em right, so, money isnt much of an issue... SO it sounds like worked on trick flow 215's are the way to go....

redtail2426

iTrader: (10)

just be sure whoever is going to "work" an already serious cylinder head like TFS,AFR or ETP,they sure as hell better know what they are doing.I know i wouldnt let anyone touch any of those heads unless it was the person who originally designed the port himself.TFS 215's are just as good if not a hair better then the AFR 205's,if money is not an issue of coarse.

RAGENZ28

iTrader: (5)

You show me anyone making a 205 cc head that has dynoed 800 hp N/A and I'll buy a pair TODAY.

TheBiz

iTrader: (45)

What size valves? I'm sure they are a 2.055/1.6 Have you thought about valve shrouding in the smaller stock bore? I Would lean towards a 2.02/1.57 205ish head. Just my $.02

Cascazilla

FWIW they are 231cc with AFR's valves. That was using extreme pressure lube on the intake face and cc'ing it like a chamber. It doesn't really matter though, they don't move air and are too big over the short turn. Just the cc number by itself tells you average cross section, but not the area at the venturi, short turn, or pushrod restriction.

DannoWS6

iTrader: (5)

Like I said if you use those heads on a motor that max's them out, Solid roller high comp, n20, or high boost, you can hit the number. It's not optimal in that environment but the point is, the runner size can move enough air to make the power, it's just physics.

There are plenty of guy with low compression FI car's making over 700whp with AFR 205's heads, just look around.

magius231

iTrader: (8)

suggestion: call Tony and ask him what he thinks. I always wonder why people come here and ask for peoples opinions that may have no idea WTF they are talking about, when they could just as easily take the time to contact the vendor directly and see what they say about it. Tony knows more about these heads than anyone alive and has always made himself available, I know who I would be asking

xfactor_pitbulls

iTrader: (16)

If they were well ported and keep the same flow characteristics of the CNC job I would run them. In fact I just finished porting and valve jobing a set of dart 225s for my 347. Its been proven more than disproven that runner volume does not hurt TQ or HP if the flow is proportioned. Its become a marketing tool for those will small runners that move better air than other heads with the same small runners. I have seen alot of big runner CC heads on 346/7 that kill the dyno, in hp and tq. I mean 240cc LS6 heads that make 430 tq. Run them, put your combo together right, and post the results.