I learned, budget heads yeild budget results. My ported ls6 heads are nice, but i have a set of afrs coming now.
__________________ 98 T/A M6 a few mods 11.23@124 stock motor on n20,new 402, fast90/90 tsp ls6 2.5 heads, comp 238/240 605/609 (small cam) full weight 12 bolt 3.73, efi-live (thanks to DRKPHX) too much else 469rwhp 445 rwt n/a 619/658 150 shot Wifes new ride 05 GTO m6, torrid red stock as a rock.
I am thinking of spending a bit now. I might go the TFS 225cc CNC heads. I am going to see a blower expert in Aus first to see if I should go the 235cc TFS heads. I am also going to get a blower cam 214/224@50 .580/.590 lift, bar lifters, roller rockers from one of your sponsors. The TFS heads are a bit cheaper than the AFR heads. Cheers Russ
the reason i mentioned #317's was bc he has a pic of a supercharger in his avatar so i assume he is FI but if you are N/A i wouldnt buy patriots new for 1200 if used for 500-700 yes i paid 575 shipped for a set of stage III's one time they are a nice piece but not the best by far
__________________ 99 Z28 mystic teal roller,rear qa1's spohn adj ta,adj phb,eibach pro kit,4.11's,th400,4xx stroker coming january 2010
01 tahoe 20's screens,LT's,etc...
99 trans am LT's,3"Y pipe,waiting on-cam,springs,stall,4.10's,fast intake
I NEED A FAST INTAKE PM ME IF YOU HAVE ONE FOR SALE
I know the older style heads were notorious for broken valve guides and truth be known thats what happened to mine. You either get a good set or a bad set. The newer castings are suppose to be alot better. In all honesty called texas speed and holler at john j. Best prices, quality work, and great results.
The avatar is correct, I have a 8 psi Harrop blower on the ls2. I gather the 317 is the intake runner size. What brand is it? Cheers Russ
they are stock casting head #317 70 or 72cc runner size is 225 i belive
__________________ 99 Z28 mystic teal roller,rear qa1's spohn adj ta,adj phb,eibach pro kit,4.11's,th400,4xx stroker coming january 2010
01 tahoe 20's screens,LT's,etc...
99 trans am LT's,3"Y pipe,waiting on-cam,springs,stall,4.10's,fast intake
I NEED A FAST INTAKE PM ME IF YOU HAVE ONE FOR SALE
I have them on a 403 I built. I have not had it dynoed but it is a lot faster than c6 z's in 4th gear pulls so I am quite sure I am at the 500 + rwhp level.
I have a set of 317's on my 402. With a FAST 90/90, it popped 482 RWHP and the tuner didn't know WTF he was doing ! Now it's in a SD tune and it pulls great! 317's would be a very cost effective solution, but granted the TFS or AFR's would probably out do the 317's
I think I have less then $1K in my 317's They were new castings I got off ebay for like $199 3 yrs ago. They were ported locally. With a CNC port job from like WCCH or whoever, they might flow better.
I grabbed a set of LS7 heads from Richard @ WCCH. In talking with him, he seems to know his stuff!
__________________ 2000 TA = Money Pit #1
2001 TA = Money Pit #2
03 Silverado 4.8 5spd
Last edited by davidws6; 09-13-2009 at 10:46 PM..
Reason: .
they are stock casting head #317 runner size is 225 i belive
IM pretty sure its 210cc on the intake runners. 225cc is an aftermarket size.
Edit: Anyone else notice when i quoted him his "number/pound" symbol became a "does not equal" sign??
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Quote:
Originally Posted by John Lingenfelter
The world's best cam combined with a poor set of heads will produce an engine that's a dog. But bolt on a set of great heads even with a poor cam, and that engine will still make great power.
I am running Patriot heads on both the cars in my sig. The '98 has 500+ passes on them and the '01 has 250+ with nary an issue. In fact the one time we went all out with the '01 it went 10.79 @ 124. Not bad for a budget head. I would definitely buy them again.
I had them on my 408 got 455/455 and peak 5800. I tore it appart 2 days later.
You pulled the heads because of a peak dyno number you didn't like? Should have took it to the track. I helped install a set of used Patriot stage 2's (he bought for $750), G5X3 cam on a full weight Z28. The owner ran a 11.3 with an M6 and mail order tune. I believe he got it into the 11.1's.
Wifes new ride 05 GTO m6, torrid red stock as a rock. 
