steven31371

Came in at 426 RWHP and 401 RWTQ....If I understand it right...thats 501 HP and 472 TQ as most car manufacturers list it...pretty cool.

With a Fast Intake and TB it would probably be 10-15 higher all the way across the power band, and 20-30 hogher at the top....Charlie did an outstanding job specking this head cam combo for outstanding gains everywhere.






The mods for the baseline run were XS Power LT Headers, Ported 78 mil Throttle Body, LG big breather and air bridge, with LS6 intake manifold, stock 1998' 806 heads and cam, and lightweight 40 lbs clutch assembly....no tune.

The "after" results are with AFR 205 heads, LS6 Intake Manifold, Ported 78 mil TB, LG big Breather and Air Bridge, XS Power LT's, and a 223/227 610/613 114 +1 LSA cam with LXL lobes....basically we added the cam and AFR Heads and speed density tune ;-)

I asked for the best "average torque" cam across the RPM range to go with the the AFR Heads, and have great low and mid-range power, still pass the smog sniffer, drive like OEM, and I was willing to give up a bit of peak torque and peak HP to do so.

Charlie gave me exactly what I asked for.

The peak numbers would have been a bit higher but we put in a 20 LBS heavier clutch assembly between the baseline run and tuned run to make it a more comfortable daily driver, ( the old clutch held power great but was a very chattery "on/off" switch clutch that was getting annoying on my daily commute....the extra 20 lbs of rotating mass definatley increased parasitic loss, so we probably left a good 10-15 peak HP on the table their, but I was willing to give up some peak HP and Torque to make the car as nice to drive on the daily commute in stop and go traffic as it is carving curvy canyon roads.

The drive home was great...was all highway miles, but is much faster at every RPM...and is easier to drive on the highway....there is around a 19 RWTQ gain by 2500 rpm!....I use to have to downshift from 5th to 4th to do a hard acceleration from 70 to 90 mph to go around some traffic...now no downshift is needed to do that, but when you do you LAUNCH from 70 to 90 lol

I did'nt do any REALLY hard accelerations because the clutch is new, but I can tell how much harder and faster it pulls...use to be that 2nd and 3rd were the really hard pulling gears, now 4th is firmly included, and 5th pulls great as well....can't wait to really get on it in the twisty canyons, though that will probably not be until I get an alignment, because we put coilovers on too.

I think a lot of tuners crank up the timing to get a high number on the dyno, and then dial the car back before they hand it off to the owner....none of that with Charlie



Static CR is 11.07 and Dynamic CR is 8.33

91 Octane here in California

We chose the stock rockers with the Comp Trunnion kit because Charlie and most other tuners say they are more dependable than most aftermarket rockers, especially if you do the Comp trunnion upgrades....I wanted a good, safe, reliable performer, that had good durability....so Charlie took some extra steps like the trunnion upgrade, new LS7 lifters, pinned the crank etc...and went with the Patriot Extreme spring kits with Ti etc etc etc...

Charlie really went the extra mile to make sure everything was as right as rain with the car's reliablity, (it has 127,000 miles ), and didn't even charge me for a lot of extra details that he could have...great guy

We sat playing with his software for a while, really cool engine analyzer software that lets you play with all the engine spec variables and map HP and Torque curve outcomes...with my header lengths and intake manifold, and heads, there were other cams that would have given a bit more peak power and torque, but the cam we picked had the highest "average" torque for my setup, that would still drive like OEM and pass the smog sniffer.


Charlie provided outstanding and proactive customer service, really going out of his way to take care of my car as if it was his own etc...

WKMCD

Congrats! Charlie's the man out there. Using a load bearing dyno he can really dial in the drivability.

pit-man

It should put some good numbers down at the track

MikeV

Check your fuel mileage. You should pick up about 2-3 MPG on the highway. I did with the AFR's.

Nice combo!

Mike V

steven31371

I ordered a bar (its a Vert) for just such endeavors ;-)

steven31371

Yep...I was looking at it on the way home and you hit it right on the button.

steven31371

Thanks Kevin...am trying to get it into the performance alignment shop today to get it aligned and corner weighted...then we'll have some real fun!

Yeah...Charlie walked me through what that dyno can do and its impressive for sure.

That Dyno combined with his top of the line Speed Density tuning software, and his Engine Spec analyzer software as a total package is about the most advanced technical setup you can get...mix that with his decades of experience and its hard to go wrong.

RonSSNova

It's an SD only tune?

steven31371

Now you are getting above my pay grade lol

I know Charlie does SD tunes on these cars...I wasn't aware that there is some kind of blended tuning?

I'm not the most knowledgable guy on the subject matter though...will see Charlie and ask him ;-)

But as I understand it...doing speed density tuning on a load bearing dyno is the ticket...becausethe dyno is capable of mimicking all the various street and track conditions regarding load for data logging, and the the SD tuning software really lets you dial it in from there.

Someone more knowledgable should chime in.

RonSSNova

Ah, the GM FI is a blended system.

Both SD and MAF are tuned to run correctly independantly.
When run together, it's a combo below 4000 and MAF only above 4000. If you car still has the MAF, it's likely being used.

Another way to look at it. When blended, steady state uses the MAF, transitions use SD. It's quite cool.

All of my efforts last year were MAF only. This year, I'll calibrate the SD and run blended.

Ron

DANZGLASS

Charlies dyno does not read that low lol. maybe 10-15 max. I made 450 with my top end head/cam/fast on his dyno. My 402 went 536whp.

How ever thats a really nice steet combo you have there. Tons of usable power down low and a nice tq curve. Fast intake would really wake it up on the top end!

Chalk another one up for Charlie, Austin and the crew there. Who i got to know well over the 2 years i frequented there shop!

steven31371

I had read that dyno jets read about 12% higher than Dynomite dyno's....but thats the internet for ya


thanks bro...its a MUCH funner car now!

steven31371

what I really like is the way it carries the power in certain places.

when it reaches close to peak HP at 5900 rpm look how well it holds the power all the way to the new rev limit of 6800

but what I really love is that nearly flat table top of Torque from 4500-5100 RPM....thats proving to be a blast lol

that torque peak table top is right in the sweet spot for the way I drive the car, having good gains all the way down at 2000 RPM makes a big seat-o-the pants differance too

am really happy with the power curve Charlie gave me, and get happier every time I drive it.

Zosixin

Charlie is a great tuner. I drove 4 hours to have him tune my car. He spent all day getting the drivability right.
His dyno does not read low. It is very accurate. Now if you are comparing it to some shops that are set up to give you ******** high number than his reads lower than those. My car has been on two other dynos since and his was actually a little higher, not by much though.

steven31371

When I said that it reads low, I meant compared to a dynojet.

In any case, after a weekend of really seeing what it can do I now could'nt care less about what the dyno reads lol....Its a fantastic feeling power band lol, and is just the right amount of power in the right places....car seems perfectly balanced between power, handling, and grip!

Is an absolute blast, and a perfect amount of power for aggressive canyon driving, and is already more car than I am driver for road courses loll

Its more fun than should be legal, and probably isn't hehehe

Zosixin

The other two dyno's were dynojets.

Do you plan to take it to the track?

steven31371

Its a Vert so I need a bar to do that...Which I ordered :-)

There are no quarter mile tracks within 200 miles, but there is an 1/8th mile track that I will go try.

Mostly I'm setting the car up to be a curvy canyon road carver that does a few HPDE's per year, but I definately want to try it at the strip a few times because I've never done it before...will have sticky street tires though, no drag pack...but who knows, maybe I'll catch the drag strip bug and want a drag pack?

When I get my roll bar in I'll head to Barona and post my 1/8th mile times on street tires, the E.T. probably won't mean much cause I'm a rookie and will have street rubber, but the MPH should be indicative I would think.

steven31371

What did your numbers come out to and whats your setup?

Zosixin

My 03z has a LS6 with forged pistons and rods stock crank. TF 215 heads, a Fast 102 and 90 TB. The cam is a 233/239 Texas speed cam.
It made 448rwhp and 410rwtq. It has 410 gears.
My stock bottom end made a little more power, but this one should have no problem with a 250 shot of nitrous.

steven31371

Thats awesome...I was briefly running a 150 shot before all the bolt on mods, and the acceleration was franetic!...a 250 shot on top of what you have now would be an incredible rush!

Nothing hits like Nitrous....if I wasn't so thrilled by seeing how fast I can bend the car around a curve I'd put the bottle back on for sure.