ThumperNC24

iTrader: (1)

First time I have ever had the car to the dyno and I am very please with the results! What do you guys think? Only thing that bothers me a little is the A/F. Car has had a dyno tune from the previous owner.


-Year-- 1999
-Make and Model-- Pontiac Trans Am
-Mileage-- 95,xxx
-Transmission ----T56 (6spd Manual)
-Type of engine-- LS1
-Power mods-- 230/232 .595"/.595 on 114 LSA cam, Bolt-ons, LS6 Intake, Stock Heads
-Brand of Dynomometer---Land and Sea
-Induction---NA
-RWHP: 412
-RWTQ: 418

Peetyz

iTrader: (7)

looks like good numbers to me

sz28aro

iTrader: (9)

That's better numbers then mines with just about the same mods. Mine put down 400 with ms4 ls6 intake. And stock heads with all boltons. Crazy that a car will make different numbers with just about the same mods.

Detoxx03

iTrader: (14)

Numbers are solid. With another intake and some heads it will be sick. Why a 114lsa and not a 112?

ThumperNC24

iTrader: (1)

Downside to buying a car that already had the cam - I don't really know why.

I believe that it was to shift the power band down a little bit and have slightly better manners. I was under the impression that the 114 lsa would provide just barely more mid range torque and just slightly lower top end power.....I could be totally off on this.

I am really wanting to put some heads on her to let her breathe. Considering PRC Stage 2.5 LS6 Heads, but it won't be for awhile. College budget kills me from doing huge mods like that. Will probably do some more with my suspension first.....

Really wish I could afford AFR 205s but that is totally out of the question.

Interspy24

iTrader: (4)

VERY impressive. That torque curve is insane!

Dom

iTrader: (2)

You should try revving higher. Looks like the power hasn't peaked yet. You can probably shift at 6500-6600 with that cam.

Wider LSA will shift power higher. 114 will peak later then 112. It will have less overlap which will have smoother idle and it will lower your low/mid rpm torque output

ThumperNC24

iTrader: (1)

Yeah, I was just worried about hitting the rev limiter on the dyno. I need to up the rev limiter though.

I normally shift @ 6300 when I am really pushing it and she def pulls all the way there.

Damian

iTrader: (89)

How much advance is ground into the cam? That cam should rev to 6800 and still make power. Do not pay attention to internet theories about 114's not making as much power/TQ. Most cars I build are on 113-114 LSA's and make more power (on average) than internet setups. It's all in the combo.

That TQ curve is a thing of beauty. You've got a VERY stout car. The A/F is a hair lean. I usually shoot for 13.0:1 on the dyno, and knock it back down to 12.6-12.8:1 for the street. Before changing anything I'd get someone to log your car on the STREET to see where the A/F is. I've seen A/F change a half point going from street/dyno or vise versa.

Congrats on the #'s.

CUR 4 VNM

iTrader: (12)

nice torque curve. who makes that cam do you know?

ThumperNC24

iTrader: (1)

I know the Cam was a custom Thunder Racing Grind.


I do not know how much advance was ground into the cam

The Current Rev Limiter is set to 6500 I am just nervous about revving her that high - is that justified or should I just let her fly?

I think I need to up my fuel system too, how big should I go on that?

I have HPtuners at home and the cable that came with the car, but I have never used it before. The car is put away for winter but when I go home for Thanksgiving break I will try to log it and see what is going on.

I am going to recontact the previous owner and see if he can get me any more info - He said that he was going to look for the cam card but I just never really got back to him because I had been so happy with the car that I didn't worry about it!

Damian

iTrader: (89)

Check your injector duty cycle to determine if you need injectors or not.

I'd bump your rev limiter to 6900, and shift around 6700. You'll be fine.

RARON455

iTrader: (35)

I would be WEARY spinning that motor too high, considering the mileage and that you are running stock heads with (stock valve springs I assume?), dont want to start getting into any valvetrain issues. Shame that the dyno graph doesnt show where the power starts to fall off, then you would know max power RPM but I would bet its right around the 6400 RPM area. But congrats on your results, good numbers.

Dom

iTrader: (2)

I'd change the rod bolts before spinning that high.

114 relative to the same cam on a 112 won't make as much torque. I never said a cam with 114 vs another random cam with 112 won't make as much torque. Torque curve on that cam looks great.

ThumperNC24

iTrader: (1)

The valve springs are Comp 918s with titanium retainers with hardened pushrods - as stated in my sig.

Cam has been in for over 20k miles.....

Mike454SS

iTrader: (4)

I'd do as was suggested above and datalog the car...check your injector duty cycle, as I think your next investment should probably be bigger than stock injectors...99/2000 injectors are small.

Very healthy torque/power curves...that looks like it's probably a lot of fun to drive...depending on what the AFR is doing on the street, you might even see a little more power when you get some bigger injectors on there and get a little more fuel into it.

StreetGliderX

iTrader: (2)

wow man other than auto and cam i may be modded up similar.... if a cam would give me 400+tq i would be headed to the order page

ThumperNC24

iTrader: (1)

it turns out the software I have is LS1edit, not HP tuners.

can I still log and have sufficient information with this or should I just bite the bullet and start saving for HPtuners?

Is it a problem to get a slightly used version of HPtuners used?