Oh4GTO

iTrader: (46)

Ok here is the dyno sheet from my new setup. It was about 80 degrees out and close to 95 in the dyno bay. At the time the engine had only 70 miles on it running conventional oil (Castrol GTX). I cant wait till thing thing brakes in fully and frees up a bit more power.

List of mods:

New LS3 shortblock with 24X reluctor wheel
AFR 225s milled to 59cc (roughly 11.5:1)
FTI Streetsweeper
Mototron 60# injectors (flow matched)
FAST 102 mm
Nick Williams 102 mm throttle body
Pacesetter (These make absolutely no power :wall
2004 Corsa Sport
Custom Intake
Powerbond UDP
SD Tune
Rockland Standard Gear T56 with F-Body gears
Monster Lvl II with billet flywheel
Dual core radiator
SPAL fans
GZ Motorsports vacuum pump

Final numbers were 501/462

The power peaked at 6400 which is not on graph but you can clearly see it going up.

Oh4GTO

iTrader: (46)

I guess there is nothing interesting about this.

Wesmanw02

iTrader: (4)

Nice build!!

Should be a fun engine.

redsap05

Nice build for sure. With all the talk of square port vs cathedral heads lately this was needed. But (please I mean this in the nicest way humanly possible) regular camed ls3's have been making those exact same numbers without the high dollar top end. Again please no offence and regaurdless of the outcome nice build for sure.

fatmat80

Nice looking engine bay. Good results as well..But i have to agree with "redsap05" those numbers are a littlesoft for the pricespent on the top end. Is the car sd or maf tuned?

Oh4GTO

iTrader: (46)

Its SD tuned. Im sure I could of had more but I wanted something different. Who knows, maybe in a year Ill change it up and do ported LS3's and a matching cam. I was going for more than just peak numbers. The throttle is so crisp and responsive and the torque is fantastic. Sooooo much better than the higher dynoing TVS1900 I had before this.

bozzhawg

Typical of a LS3 or 376 shortblock

Actually most LS3 combos above 224 intake durations have put down 500rwhp/450rwtq+

I guess thats what the other guy was saying, was the price spent worth the = gains of a stock LS3 with a 224+ intake cam swap only?.......

Plus you have more comp too 11.5:1.... Most stock LS3's with 10.7 comp and a cam like yours put down or even some 224-230 intake durations put down 500rwhp/450rwtq+....

So I guess thats why the responses are such........

Good run though, still faster than most cars on the road.....

Of course someone will come in and say you need more cam or with more cam you would make more power ..... I bet the post will come.... But this is an interesting comparison and shows what has been stated before.....

Equal cam
different heads
upgraded heads,intake,tb, vs stock or cam only= same power

Bozz

ctd

iTrader: (1)

I would say some more time tuning. It looks like improvements could be made in most area's of your curve.

JustAnotherLS2

Whats up with the cable TB on an LS3 build?

EDIT: nvm I see, its an 04.

JustAnotherLS2

Hater.

Exactly.

OP, +1 on who ever mentioned the tune. Numbers do seem quite low. I think you are leaving some on the table with the tune. JMO.

rigid

iTrader: (5)

Do you think pulling air in right off the 180+ degree radiator is affecting your results? Did you not have enough room to pull from the side like a stock setup?

Oh4GTO

iTrader: (46)

I had to go with a custom intake because none of the available CAI's fit a 102mm throttle body. The intake gets plenty of outside air through the slit in the hood. IAT's were nothing out of the ordinary.

Oh4GTO

iTrader: (46)

I am well aware that I can have more power with a thousand different options. I wanted a cathedral setup because of better average power that would be fun to drive on the street. Plus I haven't seen an LS3 with cathedrals and wanted to do something different and wanted to share the results. Also the engine only has 70 miles on it. When it's done breaking in it will free up some HP.

If I was going with 400+ cubes then a set of ported LS3 heads would be highly considered.

Tony Mamo @ AFR

iTrader: (13)

Your making good power....and Im sure the low RPM response and tip in throttle feels great on the street as you already commented on....especially bonus and very useful on a car that sees alot of street miles.

Get with your tuner and see if you can get a copy of the same run with your HP and TQ scaled the same....it will change the look of the power curve somewhat (your torque curve will look flatter if they are scaled the same)

Also curious where the A/F ratio was and how much timing are you running around peak torque and HP. You can add the A/F data to the new dyno curve assuming your tuner is up for scaling it the same.

Enjoy the new combo....those are solid number for a very streetable package built around a stock OEM shortblock.



-Tony

ls2 goat

Nope, its a GTO. You should know better. LMFAO. Do you have an overlay of the TVS and this setup you could post?

How you liking that GZ Motorsports vacuum pump? May pull the trigger on one myself here shortly.

WKMCD

iTrader: (2)

Nice build but a better chart would help your case. One that shows the 501RWHP and also shows if these are corrected numbers.

Just sayin'.

Oh4GTO

iTrader: (46)

I had to run so he gave me a quick copy of the dyno. I'll get a better chart from them and ask for an overlay with the TVS. I remember there was s spike in the torque right at the end of the run ao maybe that's why he cut that last part and scaled it the way it is.

The GZ pump is awesome. I has it on my vette which had serious blowzy. This thing would smoke like crazy. After a WOT run I would be engulfed in a cloud of smoke. I put the pump on and it cured the problem completely. I decided to use it here to keep the intake clean and minimize any blowby. It's currently ser on a very low setting since the rings are new. I may lower it because I am getting a lot of oil smell and it may be pulling too much.

anthony soprano

iTrader: (1)

Contrary to the intarweb legend that most 224+ cammed LS3s put down 500+whp - as I type this there's a 231/231 112 cammed LS3 two posts below yours that made 470whp. I'm sure given enough time, the legend will evolve that factory cammed LS3s are making 500+whp. Congrats on what looks to be a very clean build and I'm sure you'll find some more hp going forward.

ctd

iTrader: (1)

How difficult was that 102 TB to tune in?

Driveability under 1800rpm, light load & low rpm?

Idle & return to idle characterisctics?

Sorry for the many questions, I'm considering something like you've got going. /Tx's

Sounds like a fun ride!

Is this the cam?

The popular "StreetSweeper" Camshaft
Specs: 236*-240*-111*-.630"-.610"

ctd

iTrader: (1)

Excellent point, I went back & forth a few times. Very nice power here.

The tune is optimized with other runs, smoothing on 5 & you can see the improvements in most area's of the curve.