500+hpta

MY FRIEND HAS A 2000 CAMARO HE HAS REPLACED THE STOCK HEADS WITH PORTED LS6 HEADS AND A TORQUER V2 CAM. STOCK INTAKE AND INJECTORS. HE WENT TO THE DYNO DAY LAST WEEK AND PUT DOWN SOME PRETTY POOR #S FROM WHAT I HAVE SEEN FROM OTHERS WITH THE SAME OR LES UPGRADES. HE HAD 371HP AND 343 TQ THE PERSON RUNNING THE DYNO SAID THAT THE MIXTURE WAS WAY LEAN. NOT SURE IF THE MIXTURE WILL CREATE THIS MUCH OF A DIFFERANCE. I FEEL HE SHOULD BE IN THE 400 RANGE. IF ANYONE HAS ANY THOUGHTS ON THIS PLEASE POST A REPLY SO WE CAN FIGURE THIS THING OUT SO HE WILL QUIT BEING A SOBBING BIOTCH.
SORRY 00VERT-Z

jsteele90

iTrader: (13)

well what are his supporting mods? a4 or m6? and if he has a heads and cam car he needs to get a dyno tune anyway.

Datzneat

iTrader: (4)

Sounds like a crap port job and is that the ls1 intake mani? Did it get tuned yet? Sounds like you just slapped it together and put it on a dyno from what you just said.

allngn_c5

iTrader: (3)

Need more info. Headers, pully, any other mods then the cam and ported ls6 heads. Dyon operator said its way lean, am I to infer that the car isn't tuned ?? If its not then you definately need to get a tune. Adding fuel will definately wake that combo up some. The LS1 intake is holding you back a lot, and if the exhaust is still stock then theres another restriction. Bottom line get a tune ........

Slowhawk

iTrader: (12)

If it's not tuned,there is no reason to complain about the #'s.

Martin HD-28

iTrader: (16)

No doubt, those are actually decent #'s without a tune. A good tune makes all the difference in the world.

RedRallyeZ

iTrader: (20)

if thats an automatic car, thats are good numbers, more info, and fix your caplocks key

00vert-z

iTrader: (7)

Ok, guys this actually my car we are discussing. It is an A4, w/ a 3k stall, Moser 12 bolt w/ 3.73's, It has been street tuned with a wideband and HP tuners, It has Mac mids w/ stock ball flanges, Mac ORY, 3" catback w/magnaflow muffler (it was a flowmaster catback, I just replaced the muffler), lid, bellows, 85mm MAF, ported stock throttle body, !egr, !AIR, obviously all of the usual valvetrain stuff, ls7 lifters, patriot dual golds, Ti ret., TSP hardened 7.4 pushrods, etc. I am still on the stock LS1 intake and injectors, I know the 12 bolt will steal a little hp, and to quote one of the guys on here "stalled a4's and dynos go together like turds and hot dog buns", but it still just seemed a little off. The car runs pretty good, the dyno pull was made on a dynojet at Mike Norris Motorsports in Winter Garden Fl. Mike was the guy actually in my car for the pulls and he said the car felt strong (as in ok, not STRONG), and it was running a little lean. My scanner won't cooperate right now but it was the shortest dyno pull I've ever seen, it's only from 4900 to ~6750, so it is a little hard to tell the full curve. It made peak torque right at that 4900 mark, don't know if it peaked earlier than the graph shows or not. The car was rolling in 3rd, but when he went WOT, it downshifted to 2nd, so that's probably the reason for the short pull. I wasn't expecting miracles on the stock intake and injectors, no cutout, no pulley etc., but it still seemed off to me. I was the lowest dynoing H/C car there by far. The guy before me put down 411 through a stalled a4 (10 bolt car) with a smaller cam! (224/230). I will try to get the graph up on Monday. Thanks guys.
BTW, I was holding out to cough up the ~$1300 for a FAST, but not anymore! I'm going to grab an LS6 intake sometime this week!

allngn_c5

iTrader: (3)

Glad you are taking my advice on the ls6 with your setup.

I'll repeat what I said earlier, if you are running way lean then add some fuel to that bitch and let her drink. The extra fuel should give you more power. Any idea what the Duty Cycle is on your injectors ?? If you are above 90% you might want to consider getting the next size up to keep your injectors and a/f ratio happy. A/F should be around 12.8 : 1 and 13.0 : 1

00vert-z

iTrader: (7)

He said it was running a little lean, it looks from the A/F chart on the graph that it was about 14.0 from 4900 until 6400 then dips to about 13.2 at the top of the pull. I am going to step up to a 36 or 42 pounder here very soon, I am going to get them put in with the intake hopefully next week then get it re tuned. Do you think that could make that big of a difference though ~ 40 hp behind that other guy?

allngn_c5

iTrader: (3)

That's pretty lean up top. She's begging for a drink. Before you buy new injectors, find out what your duty cycle is. If its less then 90% your fine, just re tune the a/f.

RyderTA

iTrader: (3)

Get rid of that LS1 intake for sure, that'll help a lot even with just a LS6 intake. That does seem a bit low but not much considering the 12 bolt, LS1 intake, and your tune being off.

RyderTA

iTrader: (3)

Also what did that other dude have for a rear, a stock 10-bolt? That's about 20whp right there vs your 12 bolt.

00vert-z

iTrader: (7)

I guess I was expecting a little too much considering some of the things working against me. You see all of these H/C cars on here well over the 400 mark, I guess I just didn't expect to be that far below it! Thanks again for the input guys

jsteele90

iTrader: (13)

mine is only 383/372 with the tc locked. but stalled autos are not dyno queens. you should ditch the mac mids for some longtubes and get a fast92/92 or at least a ls6 intake

GMCtrk

iTrader: (23)

so was the pull in 2nd or 3rd?

00vert-z

iTrader: (7)

I am 99% sure it was in 2nd. Why, does that make a difference?

GMCtrk

iTrader: (23)

I was wondering myself. I dyno'd in 2nd personally because I wasn't sure if my driveshaft could spin to 120+ and my numbers were lower than expected. But I have been told a 3rd gear dyno would be higher. I know via HPtuners the dyno operator can lock yours trans into 3rd gear. Or you could just start the pull above the downshift rpm.

LS1-NAVY

iTrader: (1)

the ls1-intake is killing you

GMCHammer

iTrader: (4)

You need LS6 Intake, Bigger Injectors, and a Good Tune. I would also try to find out why the dyno operator did not lock your car up in 3rd and started the pull at 4900 rpm.