Tzion_ben_Arthur

iTrader: (19)

Since I have to get new heads, what is a good factory style for head for boost. nothing over $1500.00. I have patriot gold springs and stainless valves that can be swaped.

I have heard alot about deck thickness, lifting and sealing. I have studs and will continue to use MLS gaskets of some sort. 18 to 20 lb boost at most. will stay around 14 most of the time. 6.0 iron block .030 over. I want to get this thing going again, but for good.

thanks.

fastbillet

iTrader: (10)

subscribing! also looking for the same info but planning on seeing 18-22 lbs on mine....

EPP

iTrader: (22)

For the higher boost levels you're better off with a thick deck such as what the AFR heads offer, although they're more money than what you want to spend. Bob
http://www.exoticperformanceplus.com....html?item=151

Tzion_ben_Arthur

iTrader: (19)

thanks Bob. However, are there any factory castings that are better then others?

BIG_MIKE2005

iTrader: (116)

317 heads fit your budget, have a decent chamber for boost & flow on par with 243 heads. Those can be had on the cheap. Not sure how they do above 16lbs though. Granted you have studs but their deck is far from the thickness of aftermarket castings.

cjg454ss

iTrader: (27)

ive personally pushed 317 heads to 22-25psi at the track. only thing was stock arp studs and an o-ringed block.

OUTLAWZ RACING

iTrader: (9)

I push patriot stg 3 heads to 20 psi Clamping them with arp studs and mls gaskets and copper seal. Been like that for some years, and alot of 180 mph hiway blast.

Tzion_ben_Arthur

iTrader: (19)

Thanks guys, that is what I am looking for. Before I bought a set and had them ported, I did not want to put money into a head that would cause issues.

98Z28CobraKiller

iTrader: (17)

I've never seen the as cast TFS heads but I know they can be bought and are around that price range. Later you could take them off and send them in for the cnc program to be run on them. Not sure if AFR has an assembled as-cast offering but they would likely be just as good. GM also just released the as cast LS7 6 bolt head that may come close which I believe has a thicker deck. That would require a different intake.

fastbillet

iTrader: (10)

I was hoping that somone would mention patriots... they are on the cheap side for sure! i wish my block was o-ringed i hear that helps alot with water pushing issues.... I want the AFR's but thats gonna seriously hold me up because they are some serious coin.... what intake are your running outlawz?

Tzion_ben_Arthur

iTrader: (19)

I thought about the LS7 or LS3 heads and intake combo. However, I also hear that the LS3 head has a thin deck and is not good for boost???

gnx7

iTrader: (28)

I'm buying some TFS 220cc as cast heads for my project this spring. You should look into them and take the plunge. They supposedly only make 10rwhp less than the CnC'd version and have a nice thick deck. Speaking with TEA they suggest doing some minor bowl work (under $100 worth of labor) and they are good to go.

I'm doing a 364ci forged iron block with doweled main caps (keeps them from walking around) and a GT88 T6 turbo. I want to make as much power without having head sealing issues. Hopefully that is around 1000rwhp. Going into another 3rd gen RX-7 I have. 2850lbs is the goal and some silly mph/ets for a street car. T56 transmission is the plan.

98Z28CobraKiller

iTrader: (17)

I was talking about the new aftermarket GMPP LSX head. It might be called an LS7X maybe. Call SDPC and ask them about them. I think I saw a thread that they just got the first batch in. Not sure if that was the CNC ones or not.

OUTLAWZ RACING

iTrader: (9)

vic jr and intake elbows 90 mm Im switching to a 4bt in the near future I want more flow.

elias_799

iTrader: (8)

317 head is the best budget head for FI. but you can not beat the AFR's 3/4 inch deck