Forced Induction Superchargers | Turbochargers | Intercoolers

what heads to get?

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Old Oct 27, 2007 | 02:18 AM
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which heads to get for forged 347 with st76 turbo
any suggetion would be great! lookin for around 700 to 800hp
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Old Oct 27, 2007 | 05:19 AM
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We use Patriot Performance Stage 2 LQ9 heads ($1,285.00 pr) on a lot of our lower boosted builds. They work great up through 14 psi or so. We've pushed 16 psi with them without head gasket problems. We're using them on this car.
http://www.exoticperformanceplus.com...Car.php?car=40

If you had a good turbo system where you were going to push more than 16 psi, or you want all the power that you can get at a given psi, than a set of more expensive heads will be what you want to use. AFR heads have a thicker deck surface, and will handle higher boost levels, plus they flow more CFM. At roughly $2,500.00 they are more expensive as well. Bob
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Old Oct 27, 2007 | 12:41 PM
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that vette is bad *** an i was thinkin of going with a set of afr 225cc or dart 225cc heads really not shure what the price is on the darts, can darts perform as well as the afr
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Old Oct 27, 2007 | 12:48 PM
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If they are ported by a reputable porter they can. The edelbrocks might be less expensive than the afr's and might be an option.
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Old Oct 27, 2007 | 01:18 PM
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wouldn't the ls1 edelbrocks be for higher compression motors i looked at terminator prc heads built from edlebrock casting from texes speed but not shure if those would be good with boost
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Old Oct 27, 2007 | 02:12 PM
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anybody?
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Old Oct 27, 2007 | 02:16 PM
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Hunter02SS says that the darts have same decking as stock. He just switched to AFR's
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Old Oct 27, 2007 | 02:22 PM
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I am pretty sure the edelbocks come is two different cumbustion chamber sizes and you would just get the larger combustion chamber.
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Old Oct 27, 2007 | 07:11 PM
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Originally Posted by 02SSLE
Hunter02SS says that the darts have same decking as stock. He just switched to AFR's
Can anyone second this. I have been thinking on the Darts for a cheap replacement for the 317's but if they are the same deck height then I will save some more money.
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Old Oct 27, 2007 | 07:25 PM
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I used the Edelbrocks for over a year. No issues at all with the heads themselves.
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Old Oct 27, 2007 | 07:30 PM
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Has anyone used the LS1 Procomp Heads?
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Old Oct 27, 2007 | 08:32 PM
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anything cheaper an as good as afr's
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Old Oct 27, 2007 | 09:19 PM
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Hunter02SS posted in the southern section about switching. I think he had the darts O-ringed and was still pushing water, and the afr's are going up to 19 psi so far w/o issues.
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Old Oct 27, 2007 | 09:23 PM
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im gonna go with afr they seem to be what alot of people are using at the higher hp levels , DEADMANTA i seen your using the vic jr. intake is that performing well i was also thinking of the vic jr, with wilson elbow an 90mm throttle body.
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Old Oct 27, 2007 | 11:23 PM
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our 245 cylinder heads have been a proven performer on the boosted engines and avalible with 72cc chambers with the 3.900 bore in stock
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Old Oct 28, 2007 | 01:53 PM
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Hunters heads are not pushing water with the orings...he is just looking to go MORE boost

I just got some older ETP heads...they are THICK!!!
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Old Oct 28, 2007 | 05:17 PM
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My last time at the track with my Dart's I hot lapped it and it did pushed very little water! But if I had not hot lapped it ,they would of been fine! After that I changed over to the new gm 5 layer gasket and had no problem's up intil I got the AFR's. I drive my car really hard whenever i am in it. It has no rest time,except when it is in the garage! For the Dart's I would use them if you are not planning on goin over 700rwhp without o-ring's. O-ringing them and you can make more hp,without problem's. The only reason I switched to AFR's is for the thicker deck and they are cnc'ed ported,so i can turn up the boost more without water issue'shopefully.
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Old Oct 28, 2007 | 05:21 PM
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Originally Posted by deadmanTA
Hunter02SS posted in the southern section about switching. I think he had the darts O-ringed and was still pushing water, and the afr's are going up to 19 psi so far w/o issues.
I have been running 18lbs. for awhile now with the Dart's.The AFR's are so I can go higher in boost/hp. The dart's do have the thinnest deck height available,about the same as stock head's I believe, but the material they use is supposed to be better to compensate for it?
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Old Oct 28, 2007 | 05:22 PM
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Originally Posted by HUNTER02SS
My last time at the track with my Dart's I hot lapped it and it did pushed very little water! But if I had not hot lapped it ,they would of been fine! After that I changed over to the new gm 5 layer gasket and had no problem's up intil I got the AFR's. I drive my car really hard whenever i am in it. It has no rest time,except when it is in the garage! For the Dart's I would use them if you are not planning on goin over 700rwhp without o-ring's. O-ringing them and you can make more hp,without problem's. The only reason I switched to AFR's is for the thicker deck and they are cnc'ed ported,so i can turn up the boost more without water issue'shopefully.
How much power is left in the 61's?
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Old Oct 28, 2007 | 05:27 PM
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Originally Posted by 02SSLE
How much power is left in the 61's?
About 200hp left in them. They are rated for 650hp each.
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