RMH_GTO04

Was digging around and found that GM high performance offers cnc ported LS6 heads for $1500. I was wondering if any one had these or knows how good they are or about how much hp they will make. Its going on a 2004 GTO and will most likely be paired with a lingenfelter GT2-3 cam.

Thanks,
Mike

Jpr5690

iTrader: (13)

never seen them but im sure a set from tsp or another vendor would be a better piece and save you some money

smok'nZ

iTrader: (160)

wow where did you find this?

RMH_GTO04

seen it at a few different places, most likely get it from lingenfelter. I think its there CNC program the the heads use.

http://www.lingenfelter.com/store/88958665.html

I looked at other heads, but 2200+ for AFRS are out of my budget. I want a mild sleeper with stock drivability and reliabliity.

DD966

iTrader: (3)

My buddy put 'em on his 2002 SS. I can't remember the cam (224/228?). He also went with 4:10 gears. Numbers were well over 400 hp. Very good street manners. 12.5 ish 1/4mi. time on street tires.

underatedT/A

iTrader: (1)

The GM Performance Parts fully CNC ported aluminum LS6 cylinder heads provide excellent performance with an unbelievable price tag. These heads flow over 300 cfm at .550” lift and come fully assembled and ready to install with ZO6 lightweight valves and 02 ZO6 springs. This version #88958665 has 65 cc combustion chambers. You should check pushrod length and intake port alignment during installation.

Also available in 60.9 cc combustion chambers # 88958622.

For street applications the GT2-3 camshaft works great in combination with these cylinder heads. Priced each $1,140.80

direct quote from the link you provided
so the afr's would be cheaper .

orangeapeel

iTrader: (18)

lilbuddy1587

iTrader: (1)

I am currently running these heads, got them for less then a 1/3 of what they sell for! Only downside is how big they are(245cc intake runner) for a 346. Great heads, makes great power, and thats that. Also, mine are the 60.07cc heads

Badls6SS

iTrader: (7)

I just finished building a 408 with these heads they flow excellent.
495rwhp and 470rwtq
I had the smaller cc heads on my ls1 and the hot cam= 402rwhp and 372rwtq
I'm not sure how big that lingenfelter cam is but the hot cam is small @219/228 525 lift
Scoggin dickey has those alot cheaper 995.00
www.sdpc2000.com

Gunnar@Patriot

iTrader: (20)

They do have a large run in the 240's. We can do you a set of new 243 castings CNC ported assembled with LS6 springs and 2.00"/1.55" (non-sodium) valves, with a 227 +/- intake runner for only $875.00 per pair shipped to you anywhere in the US.

Badls6SS

iTrader: (7)

$875.00 for a pair not each WOW that is cheap
And there actual 243 casting and not ls6 style

Project GatTagO

iTrader: (7)

243 castings ARE LS6 heads...What is LS6 style?

Andrew

RMH_GTO04

Would I have any problem passing emissions with these heads and the lingenfelter GT2-3 cam?

Gunnar@Patriot

iTrader: (20)

Brand new 243 castings, price is per pair.

SS1875

iTrader: (34)

Lingenfelter does nothing but emmision legal cars so I would say it would pass!!
By the way, I am running their LS6 heads and GT1-1 cam, 484 hp/ 440tq via a 383 stroker on an Ed Wright tune, recently installed Kook's 1 7/8 LT'S/ORY and had it retuned by Chad @GreenlightMotorsports...should be over 500 HP and 450 TQ now.

White_Hawk

iTrader: (3)

Do they have flow numbers? I remember some of the old LPE portings stalling out at .550 or so. If you are running a .581 cam, I would make sure the heads flow up that point.

-Geoff