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For a budget head, they're not bad. Probably the best for under $1500. For a few hundred more I'd go with the TEA Stage 2 LS6 Heads, unless you have a set of 243 casting heads laying a round for a core, then they're even cheaper than the Patriots.
For a budget head, they're not bad. Probably the best for under $1500. For a few hundred more I'd go with the TEA Stage 2 LS6 Heads, unless you have a set of 243 casting heads laying a round for a core, then they're even cheaper than the Patriots.
I guess I don't get it. TEA stageII ls6 heads are better than patriot but not as good as 243 heads? I guess I am with Mickey. What are the best heads for hp to a ls1 & A-4?
Yes I did. With the proper tune they will pass..I also have LG Pro LT headers with hi-flow cats...the trick is to go to a smog shop that offers a pre-smog. If you pass the sniffer and the visual..then have the shop smog it, if not find a shop that will or a tuner that can tune it to pass.
Good luck.......
Patriots are a straight buy..co core or trade ins. My Patriot flow chart shows very good flow. The heads are cast 243 heads with markings they come 64cc chambers..I opt to have mine milled to 62cc chambers to bump the compression up and can still run well on 91* pump gas.
Good luck.......
I guess I don't get it. TEA stageII ls6 heads are better than patriot but not as good as 243 heads? I guess I am with Mickey. What are the best heads for hp to a ls1 & A-4?
I guess I don't get it. TEA stageII ls6 heads are better than patriot but not as good as 243 heads? I guess I am with Mickey. What are the best heads for hp to a ls1 & A-4?
The TEA LS6 Stage II heads use 243 casting heads. If you don't have a set to supply them, then there is a core charge. If you have a set to supply them, then there is no core charge. That core charge is about $500.
As for the "best heads" I like the Trick Flow 215's, but ETP makes some killer heads as well. I haven't been all that impressed with AFR's for their price. The TEA's would be the head I'd put on my personal car if I was going to use a GM casting head, but for the money, it's hard to beat the Patriot's, unless of coarse I had a set of 243's laying around for a core, then the TEA's would be the same price of the Patriots.
The TEA LS6 Stage II heads use 243 casting heads. If you don't have a set to supply them, then there is a core charge. If you have a set to supply them, then there is no core charge. That core charge is about $500.
As for the "best heads" I like the Trick Flow 215's, but ETP makes some killer heads as well. I haven't been all that impressed with AFR's for their price. The TEA's would be the head I'd put on my personal car if I was going to use a GM casting head, but for the money, it's hard to beat the Patriot's, unless of coarse I had a set of 243's laying around for a core, then the TEA's would be the same price of the Patriots.
Ive seen very impresive numbers from AFR heads. Thats what I just finished putting on but havent got it tuned yet. Also, from what I have seen, TFS heads are more expensive. IMO, you cant go wrong with either head
TEA= Total Engine Airflow, good guys there, helped Trickflow develop their heads.
Originally Posted by Corvette-Chris
Ive seen very impresive numbers from AFR heads. Thats what I just finished putting on but havent got it tuned yet. Also, from what I have seen, TFS heads are more expensive. IMO, you cant go wrong with either head
I'm not knocking AFR at all. . . they do make good power, and I've always been impressed with their products. You're also right about the Trickflow's being more expensive. My point is...for the difference in price between the AFR's and Trickflow's, the Trickflows make more power, but the power difference between AFR's and TEA heads are not that much for the AFR's being more expensive.
I think that AFR's are just at a bad price point. You can spend a little bit more than the AFR's and get a better performing head with the Trickflows, or spend a little less than the AFR's and get a head that performs nearly as well with the TEA's.
The price difference between AFR's and Trickflow's become even less when using a cam with more than .600" lift, because then you need the upgraded spring package. Then there's another charged to have them milled. Total price to a customer for a set of AFR 205's that we installed this last week with the upgraded spring kit, and .020" milling to make it a 62cc head was $2349.99. Now consider I can get the Trickflow 215 heads to a customer for 2395.99, the difference isn't that big anymore. Now consider I can get a customer a set of TEA LS2 Stage II heads with upgraded springs and no core for about $1950 (depending on what the core charge is at the time), or with a core for about $500 less, that seems like a bargin.
Last edited by Tuner@Straightline; Nov 30, 2007 at 11:36 AM.
Reason: correction of data
what do you guys think of these heads? i did a search n it seems like they had a few problems. im talking about the stage II ls6
I have these heads and love them.No dyno numbers,but with the mods in my sig.below. I am trapping 121+. I had them milled .020".
Great customer service also.I bought the heads from a third party new.I had a problem with them (burning oil) and Gunnar fix them free of charge,even though the waranty clearly states it's for the original owner only
how do these heads compare to the stock Zo6 heads.?
Better/worse more/less HP..
C5 Z06's have the LS6 motor and LS6 heads which are 243 castings. Both the TEA Stage II LS6 heads, and the Patriot Stage II LS6 heads use the 243 castings as a core.
TEA= Total Engine Airflow, good guys there, helped Trickflow develop their heads.
I'm not knocking AFR at all. . . they do make good power, and I've always been impressed with their products. You're also right about the Trickflow's being more expensive. My point is...for the difference in price between the AFR's and Trickflow's, the Trickflows make more power (especially low/mid band torque), but the power difference between AFR's and TEA heads are not that much for the AFR's being more expensive.
I think that AFR's are just at a bad price point. You can spend a little bit more than the AFR's and get a better performing head with the Trickflows, or spend a little less than the AFR's and get a head that performs nearly as well with the TEA's.
The price difference between AFR's and Trickflow's become even less when using a cam with more than .600" lift, because then you need the upgraded spring package. Then there's another charged to have them milled. Total price to a customer for a set of AFR 205's that we installed this last week with the upgraded spring kit, and .020" milling to make it a 62cc head was $2349.99. Now consider I can get the Trickflow 215 heads to a customer for 2395.99, the difference isn't that big anymore. Now consider I can get a customer a set of TEA LS2 Stage II heads with upgraded springs and no core for about $1950 (depending on what the core charge is at the time), or with a core for about $500 less, that seems like a bargin.
You have a great point but do TFS heads really make that much more low/mid range torque? I thought AFR's with the small runners produce good power under the curve?