Dynamometer Results & Comparisons - Results from H/C swap




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c5blkvette
05-03-2004, 09:02 AM
Well the results are in. I did my own porting on a set of LS6 heads, put in a small Comp Cam (222/224 0.566/0.568 112LSA) and installed Kooks headers. I am running full emissions gear and high flow cats. I got my car tuned at ESP to work through some driveability issues. Hip pocket is aching...

Result was 400.2HP, 383.6TQ

Not bad for a small cam. Probably could have got a tad more HP by increasing the port volume, but I am much happier with my big flat torque curve (for track racing).

http://images.cardomain.com/member_images/9/web/573000-573999/573367_2_full.jpg


Deeavi
05-03-2004, 09:11 AM
Sounds pretty good! I don't know what mine is putting out. There is no one in my area that has a dyno that I know of without driving 100 miles.

What drivability issues are you having? Mine won't idle good cold! It wants to idle fast around 1500 rpm, but after it warms up it idles fine. That and some shifting at low speed problems is really all the problems I have. The only tune I have is a Hypertech Power Tune. I am still waitng on HPTuners for 98 models

KGSloan
05-03-2004, 09:28 AM
impressive rusults :nod:

400rwhp car with a little cam, that's real nice.


foff667
05-03-2004, 09:54 AM
all ya need is a couple of plates and you could have dinner on that tq line very nice...glad to see it worked out well for ya :D

11 Bravo
05-03-2004, 10:37 AM
Sounds pretty good! I don't know what mine is putting out. There is no one in my area that has a dyno that I know of without driving 100 miles.


Hey man, I moved from Columbia 1 1/2 years ago. There is a shop in town, ATS, and they have a dyno. At least they used to. Summerville is a short drive away.

Deeavi
05-03-2004, 10:44 AM
Hey man, I moved from Columbia 1 1/2 years ago. There is a shop in town, ATS, and they have a dyno. At least they used to. Summerville is a short drive away.

Where is it? Can you give me any more info. I would like to check it now before I use the HPTuners and then after to see what I gained, IF it is not too expensive. I have enough money for the software, but after that it is kinda tight!

11 Bravo
05-03-2004, 11:21 AM
Where is it? Can you give me any more info. I would like to check it now before I use the HPTuners and then after to see what I gained, IF it is not too expensive. I have enough money for the software, but after that it is kinda tight!

ATS is at 6001 Two Notch road. 803-754-5068

Deeavi
05-03-2004, 11:26 AM
ATS is at 6001 Two Notch road. 803-754-5068


Cool, Thanks! I will check them out.

I thought there was some shops in the Charleston area, but can't seem to find any.

9T9BlueTA
05-03-2004, 11:31 AM
Very Nice numbers from that package. Where in CT are you from?

c5blkvette
05-03-2004, 12:27 PM
Im near Middletown...not so far from East Side Performance. The driveability issues were:
1.Idle was a bit lumpy at 700-800rpm
2. After you got off the gas, the revs would drop too fast and then stall
3. After the car sat for about 30mins, on restarting, it would start and then stall...you would have to keep your foot on the throttle for about 30sec before it would idle by itself.
4. Car would surge (I think this is correct term) at low engine/driving speeds

Just found out when I drove the car home for lunch that it is still doing number 3. And now it is sometimes idling as high as 1100rpm...will have to get these fixed.

pdd
05-03-2004, 01:36 PM
nice ride :cheers:

lsx24
05-03-2004, 07:27 PM
That's a very interesting graph. You rarely see an attempt to dyno the shorter RPM range with medium to big cams. With this definition, "down low" has as many different meanings as "lope", lol.

But your graph holds a steady line of well over 300 rwtq from 2-3k rpm. That is more than peak tq of a stock ls1! What is really amazing is this is all going on with the larger primaries.

I realize it's on a Vette, but this might be a promo for True Duals with X more than anything else. If I were you I would also be like

http://www.ls1tech.com/forums/images/smilies/LS1Tech/gr_gruffy.gif

JoeyGC5
05-03-2004, 08:23 PM
Nice numbers, how long till you try the juice on it? :D

M6HuggerSS
05-03-2004, 09:12 PM
i just orderd the same cam on a 114! i hope ill like it? maybe it will be more drivable on a 114? nice HP thow! congrats! so what does the powerband feal like! are you happy with it? what is your shift point?

AINT SKEERED
05-03-2004, 09:25 PM
I shift at 6500 with the c1 hammer cam and he just has a little more exh. duration. basically same shift point will work.

NoGo
05-03-2004, 09:40 PM
Im near Middletown...not so far from East Side Performance. The driveability issues were:
1.Idle was a bit lumpy at 700-800rpm
2. After you got off the gas, the revs would drop too fast and then stall
3. After the car sat for about 30mins, on restarting, it would start and then stall...you would have to keep your foot on the throttle for about 30sec before it would idle by itself.
4. Car would surge (I think this is correct term) at low engine/driving speeds

Just found out when I drove the car home for lunch that it is still doing number 3. And now it is sometimes idling as high as 1100rpm...will have to get these fixed.

Unfortunatly, some don't get cranky until a day or so later after we've done the drivability tuning......

Like I said in the PM, just pick a time, and I'll load in the changes. It should only take about 20 minutes total.

It is a nice torque curve. :drive:

c5blkvette
05-04-2004, 08:43 AM
I am happy with the acceleration between 3500 and 6000rpm which is about where I shift (M6). I believe the torque curve has a lot to do with the higher port velocity in the heads... the primaries may actually be hurting me a bit, but they will help as soon as I spray (when I get some more cash).

I am sure ESP can work out the problems with the idle. When I left after the tuning, they made sure everything was running fine. Kevin believes the computer may have re-learned in a bad way and needs to be readjusted.

9T9BlueTA
05-04-2004, 09:24 AM
i just orderd the same cam on a 114! i hope ill like it? maybe it will be more drivable on a 114? nice HP thow! congrats! so what does the powerband feal like! are you happy with it? what is your shift point?

I used to have the thunder 224 cam on a 114. Honestly, you hardly knew it, I had my TB hole drilled out a little (Before edit) and raised the idle a little. Very Tame.

c5blkvette
05-05-2004, 06:59 AM
I used to have the thunder 224 cam on a 114. Honestly, you hardly knew it, I had my TB hole drilled out a little (Before edit) and raised the idle a little. Very Tame.

With my car you can really tell that it has a cam. It has a mild lope to it when it is idling but it is definately noticable. Could also have something to do with my big stainless exhaust system amplifying the sound...

9T9BlueTA
05-05-2004, 08:35 AM
You know its there, but compared to a 112 its tame.

98Raptor
05-05-2004, 05:00 PM
Sounds pretty good! I don't know what mine is putting out. There is no one in my area that has a dyno that I know of without driving 100 miles.

What drivability issues are you having? Mine won't idle good cold! It wants to idle fast around 1500 rpm, but after it warms up it idles fine. That and some shifting at low speed problems is really all the problems I have. The only tune I have is a Hypertech Power Tune. I am still waitng on HPTuners for 98 models

I have all those same problems. My engine is conpletly stock. Yank SS380 converter and Hypertech here also.

1fastmfc5
05-06-2004, 04:14 AM
have kinda the same setup on my a4 vette. all bolt ons, 224 on 112- pp stg 2 5.7=398/385(12.0@115)

soslo
05-07-2004, 09:16 AM
But your graph holds a steady line of well over 300 rwtq from 2-3k rpm. That is more than peak tq of a stock ls1!
Umm...my car had 330 peak torque stock...just a hair under 300 RWTQ at 2000 RPMs...perhaps that is what you were referring to...

http://www.freewebs.com/soslo/images/dyno1med.jpg

Mirek
05-07-2004, 10:50 AM
I had the same issues. After stressing for a few months I ended up witha 7/32 hole in the t-body. Car then ran perfectley should have done it sooner.
Good numbers....Long primary tubes and merge collectors = Torque.

98Raptor
05-07-2004, 11:25 AM
Good numbers....Long primary tubes and merge collectors = Torque.

Here are my numbers.
304rwhp with 390rwtq :)

M6HuggerSS
05-13-2004, 09:10 PM
any pics of your porting???