lstvr

It just wouldnt fit, you can see where we had indent it already to get it to fit.
Are these the bottle neck or the Dart 225 heads? would some PRC/Trickflow/Afr be a worthwhile addition?

KW Baraka

iTrader: (7)

Idle like stock? I kinda doubt that.....but whatever.

The Trickflow 245's.......unless you can find a really good LSx head porter over there in England.......

KW

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lstvr:
Yea i thought of that after typing and seeing the header. Now to your other ? of the heads. Yes and no depends on the porting involved, Short side radius & bowls help and the Added area you spoke of would accommodate more CFM. That would run around $1000 to $1300 vs $2200 for TFS/TSP bare heads etc. You could also ask for a somewhat larger valve. Just did the research. You have a 2.050 valve a 2.100 to 2.125 valve would be even better. If the porter had to open the chamber up some for the larger valve you could get that back with a slight mill. Better stated is that if you had a good porter do the work the others heads spoken of Aren't needed. They'd all be in the same ballpark. Let me show you what I'm speaking of.

http://www.hotrod.com/articles/hrdp-...der-head-test/

Not off by much??????? Wonder what a little work could or would do?

Heres someone who thinks like i think:
https://ls1tech.com/forums/generatio...225-heads.html


KW: 460overkill had a Crazy ITB once it's dialing in, it 's good but takes work and time as with anything else. 800hp 460 ls build

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Found this guy on here who speaks of what I said.

https://ls1tech.com/forums/generatio...art-225-s.html

Patron

Main thing Brother is to Find someone who's good and competent and does things in a timely fashion.

Call Darin Morgan or Chris Frank* there are others* and see if they can pencil you in. Just be clear about what your wanting and that the heads don't need gutting. They'd know this because they'd build your heads Specifically for you engine size and rpm. CSA rule of thumb.

lstvr

my Darts have had a bowl blend and a 5 angle valve job, plus we have opened up the chambers to match the bore, we’ve also matched them to the ITB’s.
also a port, we didn’t go mad on the valve guide area though.

Patron

I seen your post while I was Xbox live and said let me get at you before it's late. aka: your in the UK. Have friends on the game from there and timing is everything.
I'm LSX RACING on XB live... LMAO but so true.


Ok so I understand what your saying but .... let me say there's only so much a small valve can do... even with all you did. Hence I behold to you: Greg Good and Factory heads on a 414. Darts are better........ a *Great*head porter can do wonders.
These aren't just your avg guy's at your local machine shop. Brian Tooley could do work also. G.Good is always busy Unless you know someone. I do and you'd have to get in line. The particular valve angle your at could use a 2.100 valve with no worries. Maybe even 2.165. Still would be cheap @ under $1500 bucks. And you'd have something unique.
I had ProComp Ls7 heads made to fit a 4.030 bore just because:1 they said it couldn't be done without the aftermarket and I was told and taught Different. 2nd was I said I could get a better Flow figure*I did* for a head made just for my engine cheaper than what they sell them for. And that is Mast or AllPro* there better than mine but I did that. So D. Morgan on the ph line. 1 of the Best darn porters this side of the Atlantic or you can say Pacific either or. Not knocking the guy's who did the work. The people I'm talking about are at the top of the game, a brand nor manufacturer make any difference..they do work. Ask your people: what a bigger valve gets you and BTW use a hollow stem if you go larger.

https://www.corvetteforum.com/forums...g-results.html

OVRKILL

Patron

Good to see you ..... still a few around. Thread starter talk to the man above.... 460 ITB. Still playing XB .... had to stop and speak. Great college BB on also.

Patron

To much going on last night, gaming & talking while watching the CBB games. Bring back a oldie but a goodie here's. Project OvrKILL 460 ITB. I told you guy's I have all the good stuff bookmarked no time to post last night.

https://ls1tech.com/forums/dynamomet...93-octane.html

lstvr

Shipping heads to and from is maybe $250, plus the porting $1500? I can get around $650 for these Darts in the UK, and i dont know exactly what to expect..
However if I get some heads from the US at Around the $2500 mark, i have Brand new guides valves and castings, plus some proven data on what people have achieved, the PRC247 Head and cam/pushrod package looks good value at $2900, are the Trickflow worth that bit extra?

Patron

The very best thing to Do is Email or Call a few of these guys and ask it maybe Cheaper Honestly I just ballparked a high number $. My ls3 head where ported for $1100. If they have a program it's really economical avg around 1000 to 1200. Even as low as $900 depending. You have a good base head to work with that's why another head isn't needed. I know you saw that a Factory head flowed 350cfm who Does that? The guy with the Rick Flare touch. And those aren't inflated numbers nither. You've got a better base product. It never hurts to call or email and get prices. But I can say this if you ask a few questions you can learn A lot. And honestly once learned you'd think another purchase is a waste. Try it out before you make a purchase it doesn't cost you a dime and learn something in the process. Bigger valve is still needed FACT.
That's more than likely what would come from any heads you said you liked. I'm not big on the name of the heads ....But who did the work on them. You could Buy TFS or PRC heads and they could still need work to maximize a given combo. Just try it out and if you don't like what you hear or see .... Make the purchase.


Funniest thing is you said $2900 for a head that would make avg hp vs any other heads out. And you have a set. PRC or TFS are in the same basic boat they'll both be within livable numbers. I like PRC and TFS is well known that they make some bad $hi+. That head comparison tells you what's going on. They'll all be in ballpark distance. That's just me.... I luv for the guy's I looked up too or like doing my heads. I KNOW they can make anything my little mind can think of. There the best in the field with cylinder heads. $1500 maybe more maybe less VS $2900 and your still in touchable site. I gotta remember your across the pond. Send a message and try it out can't hurt.