Need help choosing heads
Thread Starter
Burning Brakes
Joined: Jan 2008
Posts: 763
Likes: 3
From: Newmarket, Ontario
Need help choosing heads
I have a 2005 M6 Z51 with 4.10 gears, LG super pro long tube headers,varram intake and a LG G6X3 cam. my dyno was 414rwhp and 381 torque.
Question i have if i want to make more power and want to install heads, what would be a choice for this car.
Thanks for the help.
Steve,
Question i have if i want to make more power and want to install heads, what would be a choice for this car.
Thanks for the help.
Steve,
Former Vendor
Joined: Feb 2007
Posts: 17,337
Likes: 39
From: Birmingham, AL www.hinsonsupercars.com 205-909-9402
A nice set of Trickflow 225's would work very well for you http://forums.corvetteforum.com/c6-t...dy-inside.html
Seth
Seth
Former Vendor
Joined: Dec 2009
Posts: 3,353
Likes: 166
From: 19804
Trickflow 225s are hard to beat for an out of the box head on an ls2. You are going to also want a Fast intake manifold to take advantage of the trickflows.
Last edited by HorsePowerAddicts; Jun 24, 2010 at 01:59 PM.
Melting Slicks
Joined: Nov 2006
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From: Dallas Tx
Premium Supporting Vendor
Joined: Aug 2008
Posts: 186
Likes: 1
From: TEXAS!
Or, for a more budget oriented cylinder head that you can still use your stock (or modified stockers) rockers on, you might check out the PRC Stage 2.5 LS6's!
They are basically a ported version of your LS2 head, with larger 2.02"/1.57" valves, dual springs, and full CNC porting and valve job all for about $1600!
Let us know if we can answer any questions you might have about the PRC or any other cylinder heads
They are basically a ported version of your LS2 head, with larger 2.02"/1.57" valves, dual springs, and full CNC porting and valve job all for about $1600!
Let us know if we can answer any questions you might have about the PRC or any other cylinder heads
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Team Owner
Joined: Nov 2006
Posts: 21,136
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From: Long Island New York
A nice set of Trickflow 225's would work very well for you http://forums.corvetteforum.com/c6-t...dy-inside.html
Seth
Seth
Advanced
Joined: Sep 2009
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You can even look at the TFS 220cc fast as cast heads. At about $1680 they are the best bang for the buck hands down. I personally can't see very much power being left on the table in comparison to the 225's and the $700 price difference.
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Melting Slicks
Joined: Nov 2006
Posts: 2,865
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From: Dallas Tx
I opened that link provided and see data for a 440LSX a 454LSX turbo and a 427 LS3. The vast majority of us arent running such big gun engines. I would like to see some more 'common' TF head installs with data provided. A 1200hp monster motor might look great but its not real world for the masses here on CF. IMO.
Team Owner
Joined: Nov 2006
Posts: 21,136
Likes: 212
From: Long Island New York
the vendor submitted the link to show he sells the heads and that the 3rd link down on his page is a link to buy the tf 225's. i doubt he submitted the link to show the other stuff. it was just easy for him to copy and paste a link from an old for sale thread than to redo it here without the other stuff in it. i personally gained nearly 60hp from these heads on my ls2 which is what the OP drives also. LSCHLEM on here also gained as much as what i did with the same heads. The tf 225's work wonders on an ls2 car with a good cam and a ported fast
Well, thats real nice of you to answer for them but I would rather see dynos and data for the 95% percentile LS2/3's who dont run over 1200hp TT cars. I was hoping for more than "buy these heads from us, heres our website" spiel. You're right though, it was alot easier for them rather than trying to explain why these heads would be a good choice.
Tolero Apto Victum
Joined: Jul 2007
Posts: 9,669
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From: Woodlands TX
Take a look at these: http://www.livernoismotorsports.com/...t.phtml?p=1352
I have their CNC Ported Stage 3 GM LS-Series Cylinder Heads on my 07 LS2 and am very happy with them, just hit over 92,000 miles last weekend.
I have their CNC Ported Stage 3 GM LS-Series Cylinder Heads on my 07 LS2 and am very happy with them, just hit over 92,000 miles last weekend.
Last edited by Gering; Jun 24, 2010 at 10:36 PM.
Race Director
Joined: Dec 2006
Posts: 12,414
Likes: 2,922
From: Fort Worth, Texas
the vendor submitted the link to show he sells the heads and that the 3rd link down on his page is a link to buy the tf 225's. i doubt he submitted the link to show the other stuff. it was just easy for him to copy and paste a link from an old for sale thread than to redo it here without the other stuff in it. i personally gained nearly 60hp from these heads on my ls2 which is what the OP drives also. LSCHLEM on here also gained as much as what i did with the same heads. The tf 225's work wonders on an ls2 car with a good cam and a ported fast
Melting Slicks
Joined: Nov 2006
Posts: 2,865
Likes: 2
From: Dallas Tx
Melting Slicks
Joined: Nov 2006
Posts: 2,865
Likes: 2
From: Dallas Tx
Well, thats real nice of you to answer for them but I would rather see dynos and data for the 95% percentile LS2/3's who dont run over 1200hp TT cars. I was hoping for more than "buy these heads from us, heres our website" spiel. You're right though, it was alot easier for them rather than trying to explain why these heads would be a good choice.
i researched my results and this is what was done to my car in order over the past few years with the appropriate dyno results....i gained 56hp from the tf 225 heads...
1st G5x3 cam, headers, and exhaust=422/408
2nd G5x3 cam, headers, exhaust, cai, and fast=436/414
3rd G6x3 cam, headers, ehxaust, cai, fast and tf 225 heads=490/442
4th is same as third but with mcleod clutch and 4.10 gears=497/451
5th is same as 4th but with electric water pump and 100mm maf=510/457
6th is same as 5th but with new rps clutch=526/478
some people want to figure a 10hp loss through 4.10 gears and some don't. so it's up to anyone if they want to add 10hp to the 4th, 5th, and 6th results b/c of the 4.10 gears. no biggie to me.
Last edited by dsp300c; Jun 24, 2010 at 11:16 PM.
Burning Brakes
Joined: Aug 2008
Posts: 819
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From: Tampa (Cigar City) (The Big Sombrero)
Anyone know what the advantages/disadvantages of using tricflow 215s vs. 225s ?
(I hope this isn't seen as a thread hijack...my appologies if so, that is not my intention....instead I hope this question will enhance this thread....Tks)
(I hope this isn't seen as a thread hijack...my appologies if so, that is not my intention....instead I hope this question will enhance this thread....Tks
)
Team Owner
Joined: Nov 2006
Posts: 21,136
Likes: 212
From: Long Island New York
Thanks for informative data.Im making 522rwhp on my S/C'd LS2 with stock H/C. Im thinking about doing a mild blower cam and heads down the road but still exploring which way I want to go. Im a big fan of doing things once. Again, thanks for taking the time.
Melting Slicks
Joined: Nov 2006
Posts: 2,865
Likes: 2
From: Dallas Tx
no problem. wasn't trying to be a dick in my first post. if i came across that way, i apologize. 522 sounds about right for a s/c ls2 and assuming bolts with stock h/c. now as far as which cam and heads to go with on your application i have no clue since the s/c changes things up b/t your fi build and my na build. sure someone could advise you what cam and heads to use in the c6 fi section.
Race Director
Joined: Dec 2006
Posts: 12,414
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From: Fort Worth, Texas
, would like to see a comparison of the PRC 227 and TF, maybe Texas Speed can chime in?
Melting Slicks
Joined: Nov 2006
Posts: 2,865
Likes: 2
From: Dallas Tx
yeah me too, may give you a run for your money with a big cam, fast, new clutch and the mz6 tranny(figure all that would be good ~.6)...since I don't have a stake in things like you do, would like to see a comparison of the PRC 227 and TF, maybe Texas Speed can chime in?
, would like to see a comparison of the PRC 227 and TF, maybe Texas Speed can chime in?
Instructor
Joined: Mar 2007
Posts: 223
Likes: 0
From: Casper WY
I went with a ported and polished ls3 head and intake for my ls2 and was very pleased with the gains. It was more cost effective than the aftermarket heads. I now have trick flow race heads for my F1C supercharged application but my friend is still running the ported ls3 heads with great results. TrickFlow heads are a great head. If money isn't an issue I would definately consider them. Compare prices vs. hp results between aftermarket heads and ported and polished stock ls3 heads. Or you can go all out and have the Trick Flows ported and hand matched to the intake. Just my .02