Dynamometer Results & Comparisons - Heads/Cam Dyno Results 475 RWHP

This car belongs to Beck01 here on LS1Tech. :)

Here's the setup:

2004 Z06 - Bone stock 346 shortblock
LG Longtube Headers WITH cats
Cutouts
LS2 Throttle Body and MAF
FAST 90/90 Intake
AFR 205 Heads touched up by Casey Snyder @ The School of Automotive Machinists
Custom COMP Cam (Secret specs but it's smaller than 230 @ .050, XE-R Lobe)
Comp 921 Springs
Stock Rocker Arms
ASP Underdrive Pulley

475RWHP/428 FT. LBS.

Attached is the dyno graph:

http://i70.photobucket.com/albums/i104/GForceBen/Z06Dyno.jpg

Nice numbers dude

nice damn numbers, talk about tq on demand, that shits there from the start:)

nice tq~

Just clear a doubt about the injectors, still stock ???

Stock 04 Z06 Injectors 28.8lbs per hr

killer :devil:

real nice man! i did 463hp 413.8 tq mustang dyno with close to the same set up as you. i also still have stock 01 ws6 28.8 injectors.

Nice!

wow, real nice.

Nice numbers, what compression?

Casey is a god and you guys spec'ed a really nice cam. Well done. Power everywhere!

you guys are probalby at 110% duty cycle.

I love that small/medium sized cams are making awesome power!

Will this secret spec cam be sold? Did it clear on these obviously milled heads without flycutiing? If so, I'm interested!

Alan

Cutouts
475RWHP/428 FLB
Was this with the cutouts open?

The car is my little project. G-Force was nice enough to accommodate me with a few dyno runs earlier today - thanks guys.

I just wanted to clear up one item: the injectors are SVO30 and they are right at 80% duty cycle at WOT. The stock ones were on the edge with just the headers and a few bolt ons.

Yes the cut outs were open.

The cam is nothing special, just an XER ground to my specs.

Jeff

care to post injector duty cycle(or width) and respective afr?

I'm glad Mike posted this. If didn't I was going to. It was very worthy of being shared. It's a very strong ride no doubt. This was also through the cats.

Kudos to ya Jeff. The attention to detail all paid off. You just gotta love!

Sucks knowing people are out there making 100 HP more than me with very similar setups, less the 90/90.

Nice numbers though!

Those are great numbers. I really like the cam being less than 230 degrees duration. I would love to have that combo in my Z06. :) Congrats. :cheers:

Bruce

really nice numbers

Thanks guys - it sure is fun to drive.

I tried to optimize everything, so yes the heads were milled (ordered them from AFR that way). Yes I flycut the pistons. Compression worked out to be between 11.1 - 11.2.

As for inj duty cycle - it is 82% at 6800 RPM at 12.9 AFR. That is from HPT with an LC-1.

Jeff

Very impressive numbers with a small camshaft & through CATS :devil:

Congrats buddy :cheers:

Btw How much the heads were milled 62cc or 61cc ?

peace

not SAE #s tho?

Those numbers are SAE Corrected. The uncorrected numbers were even higher. Today was a good dyno day in Houston. :)

The heads were ordered at 59cc, but when I cc’d them all chambers where very close to 61.5cc.

And yes those are SAE #’s: uncorrected numbers were 484.43 RWHP and 436.92 RWTQ. As noted above today was a nice day in Houston!

Jeff

I would change out the injectors just to be on the safe side. From what I understand, they don't spray as uniformly as they would under 80%. If that is the case, maybe u can pick up another pony or 2 there.

82% duty at 6800rpm seems fine to me....

VERY strong numbers! Congrats!

...Yes the cut outs were open...
...This was also through the cats...So, was it through the cats or were the cutouts open??? Or, are the cats before the cutouts :confused:

The cut-outs are after the cats.

I have had several questions about the cutouts. I just fabbed up some 3" dumps right before the muffler flanges. It is tight, but after several thousand miles there are no bumps or rattles.

Jeff

http://i64.photobucket.com/albums/h191/Beck01_2004/Cutouts.jpg

That is a sweet set up. The electric cut-outs being available at the flip of a switch is sweet!

The most impressive part about this set-up is that you could add an EWP and short belt and exceed 485 rwhp.

Your #s are conservative by most standards.

Thanks Guys!

Nice numbers! What octane where the numbers achieved on?

93 Octane

nice!

Awsome numbers!

Very Good #'s You and I are like twins, but obviously fraternal, not identical. I guess a lot of power comes outta the Texas Tuners. Hell I drove all the way from Michigan, not once but twice. Love Lg Motorsports.