SONKIST

Ok, well I've made my final decisions and this will get me what it gets me, but I'm just wondering how it will land. Here's the plan and I'm hoping somebody out there has the exact setup and can tell me what I will get:

WCCH ported heads milled .015" - CF 11.25:1 (per Richard)
Ported FAST intake (also by WCCH) to match the heads
Katech Torquer 110 cam
Katech C5R Timing chain
Halltech MF103 CAI
Dyna-Flow Headers with High Flow cats and X-pipe
Tune of course
Stock Throttle Body
Stock NNP Catback
Bone stock bottom end

I'm hoping for 550+ rwhp, but it is what it is.

So, anybody out there with this setup? What will this get me?

I know most people do the NW 102 TB with this, but in talking to Jason at Katech, he talked me out of it. Said I would get a bit better throttle response with the stock TB and negligible gain with the NW 102 TB. He said the slight gain for the money and the reduced throttle response made it not worth it in his opinion so I going with it. It's an easy add later, but right now, this is the plan.

So what do you guys think? What do you think my final number will be with this setup. Car is going in the shop as soon as I get the interior back in it. (Stereo upgrade and sound-deadening project currently underway.)

50 4Ever

I had Calloway Honker CAI
WCCH Stage 2 heads
Kooks headers, high flow cats and X-Pipe
mild Cam
stock exhaust with the muffler mod (measured at 104 db to track)

I put down 545 RWHP on a DynaPack Dyno. For reference, a stock ZR1 on that dyno puts down 545 RWHP.

Because of CA smog rules I had to change back to stock exhaust and put in a cam that would blow clean. I only lost 20 RWHP.

SONKIST

That's encouraging!

Anyone else? Somebody that's running the torquer 110?

LanceFitzgiben

I bagged 523 whp with torquer 110, halltech mf103, non-decked prc heads, and no headers or other mods. You'll see 550 np.

Wulverine

Interesting that Jason said a stock TB will give better throttle response than a NW TB.

SONKIST

Don't know what the diff is between the PRC heads and the WCCH.

RedZ4me

........about $800-$1000 more. PRC are brand new aftermarket alum. heads. Dual springs, bronze guides, Ti Intake, SS exh, retainers included will cost you about $3100. Deck is thicker than stock too.

sublime1996525

briancb1

The 231/247 LSR comp cam works very well and will drive great. Seen it multiple times and I'm impressed for what it is.

Decking .015" won't gain that much compression. .005" is just compensating for sinking the valves during the valve job.

If you don't want to mill more look into getting some cometic .040" compressed gaskets. Give a touch more compression and yield a better quench.

No way a stock TB gives more response than a NW. Had both and the 102 is ****.

SONKIST

He explained to me the reason but I can't articulate it back to you. He in no way put down the NW TB, he just said for the street I would like the stock better. He said not to have it ported either.

Undy

Here's my combo...

Katech Torquer 110
PCR 265 heads milled 0.030" = 11.5 to 1 (very close to the WCCH prepped heads in HP)
Fast 102
NW throttle body
LS2 60# injectors
C5R timing chain
Kooks headers w/ factory exhaust
LS2 fuel rails.

558 RWHP w/ 541 Torque

SONKIST

Why the 60# injectors? Will I need to do that to hit 550?

lbzraptor

No. I have about the same set up as Undy without the fast 102 and have stock heads with bronze guides and no milling and have about the same hp on the dyno,

patch68

Just fired mine up friday night.went with Qm600 cam, Wcch heads milled 40 Thousand's, vararam intake, and dynatech headers.waiting on my fast 102 and a tune to see where I end up. Hopeing for 570/590 rwhp. Should be in that range with all my mods.

Undy

It has nothing to do with hitting a target HP. I just didn't want my injectors running near max duty cycle. With the 60s I'm back around 60% duty cycle.

Plus... with the fast 102 you either use FAST's fuel rails or (IMO) jack-leg, fuel leaking, fire causing injector spacers required to use OEM fuel rails. With new LS2 injectors you can run a set of OEM fuel rails on the LS7 w/o spacers.

OBTW, had a friend almost lose his car due to a fire caused by leaking FAST fuel rails.

I just didn't want ANY risk of fire.

u1arunit

Same here. Stock TB, ported stock TB, and now NW102 and there is no way the NW is not more responsive.

FNBADAZ06

WCCH Stage 2 ported heads milled .030" - CF 11.5:1
Unported FAST intake
Katech Torquer 110 cam (version 1)
Katech C5R Timing chain
Halltech MF103 CAI
B&B 1 7/8 SS ceramic coated headers, no cats, Akrapovix titanium X-pipe
NW102 Throttle Body
60# injectors
OEM ZR1 Catback
comp trunion upgraded rockers
new shorter, stronger pushrods
new LS7 lifters
Bone stock bottom end

On AZ 91 pump gas (E10), best pull 555/535.
On E85 , best pull 570/550.

FYI...agree on the comment about the FAST branded fuel rails. I had first generation rails which leaked....switched to Aeromotive brand rails, no problems.

Unreal

I gained 7rwhp peak and 11rwtq and 10-12rwhp in the midrange with a NW102 over a ported stock. Driveability was much much better. If you can afford the NW102 I would do it.

SONKIST

Ok guys, I need to get a handle on this I guess. No way I want leaky fuel rails!! I was hoping to modify and re-use my custom painted fuel rail covers. Is there a way to address this issue and still use my covers (modified of course).

Undy, it sounds like you changed to 60# LS2 injectors and then reused your stock, OEM, LS7 rails. Correct?

FNBADAZ06, it sounds like you kept the LS7 stock injectors and went to an aftermarket rail.

FNBADAZ06

Correct, stock length 60# injectors and Aeromotive fuel rails. I went the aftermarket route as much for looks...the OEM fuel rail route is capable of handling your fueling needs, but I think you need the LS2 fuel rail as it clears the manifold, where the LS7/LS3 rails will hit the top of the intake without injector spacers.