Best Heads for boost?
Thread Starter
Instructor
Joined: Oct 2006
Posts: 122
Likes: 0
From: Georgia
Best Heads for boost?
I dont know if this has been asked already, I have searched all over and I havent found the info I need. Anyway, I would like to know what set of heads are the best for turbos. I would like to be able to run a little more boost on the stock bottom for now (currently running .5bar 7.25psi) But I do plan on building a 383 stroker with forged internals when I have time. Im not looking for a set of budget heads but dont wanna go to big either. Ultimately, the heads would have to be good enough to run 14-15 psi. I appreciate any constructive advise anyone has.
Drifting
Joined: Jul 2004
Posts: 1,713
Likes: 2
I dont know if this has been asked already, I have searched all over and I havent found the info I need. Anyway, I would like to know what set of heads are the best for turbos. I would like to be able to run a little more boost on the stock bottom for now (currently running .5bar 7.25psi) But I do plan on building a 383 stroker with forged internals when I have time. Im not looking for a set of budget heads but dont wanna go to big either. Ultimately, the heads would have to be good enough to run 14-15 psi. I appreciate any constructive advise anyone has.
Tech Contributor
Joined: Apr 2007
Posts: 10,924
Likes: 78
From: Forney Texas
Don't worry about 6-bolt heads. You need a 6 bolt block to use them. They are reserved for rich Gorillas. 
AFR's or Trick Flows will do you just fine. They have nice, thick decks. I ran 18psi on a stock casting Patriot head for 2 years and never pushed water.
AFR's or Trick Flows will do you just fine. They have nice, thick decks. I ran 18psi on a stock casting Patriot head for 2 years and never pushed water.
Former Vendor
Joined: Feb 2004
Posts: 10,876
Likes: 8
From: Las Vegas NV
St. Jude Donor '06 & '12
The RHS Pro Elite head is also a 225cc head, with a MASSIVE .800" deck, and steel sleeves in the head bolt locations. They are known as having one of the thickest decks in the industry. They also have a .500" raised rail for shaft rockers. Their not the cheapest in the world, but they will handle 20+ psi all day long. Not to mention an excellent CNC program. The part number is 54225.
Thread Starter
Instructor
Joined: Oct 2006
Posts: 122
Likes: 0
From: Georgia
Thanks for all the info! Those RHS heads look great but I dont really wanna spend over 2 grand on one head.
If I get a 72cc head, does anyone know if that will allow me to run 10psi relatively safely on the stock bottom?
If I get a 72cc head, does anyone know if that will allow me to run 10psi relatively safely on the stock bottom?
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Former Vendor
Joined: Feb 2004
Posts: 10,876
Likes: 8
From: Las Vegas NV
St. Jude Donor '06 & '12
Then you cant go wrong with AFR's or TFS. They both work well. Just dont gowith a large bore head. Since your staying stock bore, you need to go with a head that will work, and not be a detriment.
I "Think" AFR makes a 3.905" 225, but im not sure. But a 205 will work great as well.
Yeah, you would be fine with a 72cc head on a stock bottom end. Thats no different than running a stock 317 or 035 head. Guys do it all the time.
I "Think" AFR makes a 3.905" 225, but im not sure. But a 205 will work great as well.
Yeah, you would be fine with a 72cc head on a stock bottom end. Thats no different than running a stock 317 or 035 head. Guys do it all the time.
Melting Slicks
Joined: Nov 2007
Posts: 2,144
Likes: 2
From: Conway AR
I think about any after market head will be better than factory. As for which one who knows. I know a good set of after market heads is going to set you back around 2400 plus. My ETP's were around 2900.00
Drifting
Joined: Aug 2009
Posts: 1,412
Likes: 0
From: Texas 1,002rwhp/928rwtq
St. Jude Donor '09-'10
Blowers like exhaust flow, turbo's are the opposite. If you are on a budget, I would look into Dallas Performance ported LS3's, otherwise I would try a set of Performance Induction LS74.0's. Dallas Performance has several cars north of 1K to the wheels with LS3 heads and a Victor Jr. intake.
Instructor
Joined: Aug 2003
Posts: 217
Likes: 3
From: Bardstown Ky
Over 1200 RWHP with TFS 245's, a hyd roller cam and out of the box Super Victor.
http://www.planetlsx.com/vehicles/Ol...or_Runs_7s/102
http://www.planetlsx.com/vehicles/Ol...or_Runs_7s/102
Former Vendor
Joined: Mar 2008
Posts: 2,279
Likes: 1
Over 1200 RWHP with TFS 245's, a hyd roller cam and out of the box Super Victor.
http://www.planetlsx.com/vehicles/Ol...or_Runs_7s/102
http://www.planetlsx.com/vehicles/Ol...or_Runs_7s/102
Thanks's Brian!
Le Mans Master
Joined: Sep 2000
Posts: 6,976
Likes: 527
From: Clouds Over California
Just running LS6 Stage II heads with 77cc chambers (AFR Dual Valve Springs). Have used them with 3 different power adder setups. Made 1K hp with them no problem. Didn't pay thousands of $$ for them either...I think I spent $800 to have them done by WCCH.
Burning Brakes
Joined: Jul 2004
Posts: 1,076
Likes: 19
From: Mississauga Ontario
Nothing fancy here. 6.0L truck heads worked over by WCCH. Spent under $1000. Car makes just north of 800 at the wheels...although I do get jealous when I see the dyno results of the 900 rwhp guys with their fancy AFRs...
Melting Slicks
Joined: Dec 2003
Posts: 3,315
Likes: 17
From: Near Jacksonville Fl.
Then you cant go wrong with AFR's or TFS. They both work well. Just dont gowith a large bore head. Since your staying stock bore, you need to go with a head that will work, and not be a detriment
OK I'll bite, what is the detriment to using a 4.0" bore head on a 3.905 block?
I remember GM manufacturing building big blocks that actually had the top of the cylinders notched for valve clearance.
While it may not be optimal for N/A is valve shrouding that critical for FI?
OK I'll bite, what is the detriment to using a 4.0" bore head on a 3.905 block?
I remember GM manufacturing building big blocks that actually had the top of the cylinders notched for valve clearance.
While it may not be optimal for N/A is valve shrouding that critical for FI?