Exactly what I went with on my build. Patriot Stage II 317's, ARP Studs, Cometic gaskets, all slapped on a 377 LS3 short.
Good cheep heads?
Race Director
Joined: Mar 2004
Posts: 12,466
Likes: 886
From: Fort Wayne IN
2025 C5 of the Year Finalist - Modified
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Racer
Joined: Sep 2008
Posts: 301
Likes: 0
From: G-town Kentucky
a set of 317's got sold on ls1tech, a couple of days ago, for $125.00 bucks. try to find a set of those and do some bowl blending yourself. nothing extravagant. then maybe have a 3 angle valve job done. a set of 918 springs (depending on cam). you'd have a helluva set of heads for under 500 bucks.
well, that is if you're a diy.
well, that is if you're a diy.
Team Owner
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
As mentioned above!
You could also consider a good set of LS6 Heads and put some Gold springs on them!
You can find these fairly cheap too
Thanks,Matt
You could also consider a good set of LS6 Heads and put some Gold springs on them!
You can find these fairly cheap too
Thanks,Matt
Former Vendor
Joined: Feb 2007
Posts: 17,337
Likes: 39
From: Birmingham, AL www.hinsonsupercars.com 205-909-9402
The Patriot's are an excellent bang for your buck cylinder head.
http://hinsonsupercars.com/s-319-cnc-ported-lq9.aspx
Let me know if you have any questions.
Seth
205-267-6387
http://hinsonsupercars.com/s-319-cnc-ported-lq9.aspx
Let me know if you have any questions.
Seth
205-267-6387
Last edited by HinsonSuperCars; Feb 5, 2009 at 06:46 PM.
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Tech Contributor
Joined: Apr 2007
Posts: 10,924
Likes: 78
From: Forney Texas
The Patriot's are an excellent bang for your buck cylinder head. I can do free shipping on any set.
http://hinsonsupercars.com/s-319-cnc-ported-lq9.aspx
Let me know if you have any questions.
Seth
205-267-6387
http://hinsonsupercars.com/s-319-cnc-ported-lq9.aspx
Let me know if you have any questions.
Seth
205-267-6387
Melting Slicks
Joined: Jul 2004
Posts: 2,844
Likes: 144
From: Northern Ireland
Ive a set of ported 853 heads here.
Stage 1 hand ported by FFHP before they dissappeared. I used them for about a year with my first 5.7 build.
I do have flow data somewhere...but I always find it then lose it again !!!
Chambers are circa 63cc, dual springs fitted.
Any interest ?
Stage 1 hand ported by FFHP before they dissappeared. I used them for about a year with my first 5.7 build.
I do have flow data somewhere...but I always find it then lose it again !!!
Chambers are circa 63cc, dual springs fitted.
Any interest ?
Le Mans Master
Joined: Feb 2002
Posts: 5,970
Likes: 20
From: San Marcos Texas
Former Vendor
Joined: Dec 2006
Posts: 2,239
Likes: 1
We use Patriot heads on a lot of builds, and they work really well for up to 16 psi of boost. Check this C5 out that has Patriot LQ9 Stage 2 heads out.
http://www.exoticperformanceplus.com...Car.php?car=54
With 346 and D-1SC
http://www.exoticperformanceplus.com...Car.php?car=40
Same car, same heads - LS2/402 with F-1C. Bob
http://www.exoticperformanceplus.com...Car.php?car=54
With 346 and D-1SC
http://www.exoticperformanceplus.com...Car.php?car=40
Same car, same heads - LS2/402 with F-1C. Bob
Drifting
Joined: Sep 2008
Posts: 1,721
Likes: 21
From: Roseburg Oregon
We use Patriot heads on a lot of builds, and they work really well for up to 16 psi of boost. Check this C5 out that has Patriot LQ9 Stage 2 heads out.
http://www.exoticperformanceplus.com...Car.php?car=54
With 346 and D-1SC
http://www.exoticperformanceplus.com...Car.php?car=40
Same car, same heads - LS2/402 with F-1C. Bob
http://www.exoticperformanceplus.com...Car.php?car=54
With 346 and D-1SC
http://www.exoticperformanceplus.com...Car.php?car=40
Same car, same heads - LS2/402 with F-1C. Bob
Over 700 rwhp on a Mustang Chassis Dyno, which uses eddy current (http://www.exoticperformanceplus.com/dyno.php ) would be approx 750 rwhp on a DynoJet Chassis Dyno! Considering some of this horsepower is used up through the IRS rear-end, this is really impressive! All out of just 346 cubic inches on 93 octane pump gas!
With the methanol kit, we were able to add a lot more timing into the computer, which picked up the rwhp from 705 to 740! The methanol kit will not only allow more timing to be used, but it will also cool down the inlet air temperature.
The old shortblock is for sale: $1,000.00 Sold!!
2004 LS1 alum block, stock crank, Callies Compstar rods, Diamond pistons, Total Seal Rings, Lingenfelter GT2-3 camshaft, Comp timing chain set, SLP oil pump, ARP head studs.
2004 LS1 alum block, stock crank, Callies Compstar rods, Diamond pistons, Total Seal Rings, Lingenfelter GT2-3 camshaft, Comp timing chain set, SLP oil pump, ARP head studs.
With a 4.50 blower pulley swap to slow the blower down, we ended up with 15.9 psi of boost, and 804 rwhp with only 17 degrees of timing! The power starts falling off at 6000 rpm, most likely the cylinder heads are affecting the power. With 800 rwhp being the goal, we certainly met it and added a lot more torque to boot!
not too bad, im completely impressed on that 700whp pum pgas 346.
Le Mans Master
Joined: Apr 2005
Posts: 8,077
Likes: 4
From: Scarborough ONTARIO
Team Owner
Joined: Apr 2001
Posts: 26,794
Likes: 614
From: Elmhurst, IL (West Suburb of Chicago) & Home of MEGA Horsepower
St. Jude Donor '06
The Dart 225 Heads are a very popular and PROVEN Head for f/i applications and they are GREAT BANG for the buck! These exact 225 Dart head were run for the longest time with that one guy on ls1tech that has one of the fastest stock cubed procharged f-bodies (KP) where he was running mid to low 9s all day long with these!
These same Dart 225 heads are also run by tuner for ECS who lives down south I believe on his turbo forged Z06 (Blown Z06 aka Nick) a forum tuner! He recommended them to me that my first forged motor I had built a couple of years ago by LME (that I sold) also was running the Dart 225s on a stock cubed forged cent. supercharged motor!
Last edited by Mopar Jimmy; Feb 6, 2009 at 11:35 PM.
Thread Starter
Racer
Joined: Apr 2002
Posts: 372
Likes: 0
From: Avesta Sweden
[QUOTE=BLOWN ECS Z06;1568851581]Here is an even better heads on a set of Dart 225 heads (will make more power on his forged motor application that can run more boost) that have .650 lift springs on them, titanium retainer, ported, and sold by one of our own for $1,250 shipped to his door!
QUOTE]
where can I buy Dart 225 $1,250?
That sounds like a very good price!
QUOTE]
where can I buy Dart 225 $1,250?
That sounds like a very good price!
Thread Starter
Racer
Joined: Apr 2002
Posts: 372
Likes: 0
From: Avesta Sweden
The Patriot's are an excellent bang for your buck cylinder head.
http://hinsonsupercars.com/s-319-cnc-ported-lq9.aspx
Let me know if you have any questions.
Seth
205-267-6387
http://hinsonsupercars.com/s-319-cnc-ported-lq9.aspx
Let me know if you have any questions.
Seth
205-267-6387
We dont want to lower our CR to much because we are going to run the car on Ethanol and have -6cc pistons.