1nastyss

iTrader: (12)

Its in an 01 Camaro , 6 speed , 10 bolt

LQ9 404 built by LME 11.7:1 comp
Eps grind cam 247/255 intake .623 exhaust .632 lift, 112 lsa
Trickflow 235's , ls7 lifters , TF 7.550" x 5/16" pushrods, Yella Terra ultra lites
Meziere EWP
Ported Fast 102 intake , NW 102 tb , FTP 104 lid ...tuned SD
42 lb injectors , ls2 rails , Racetronix fuel pump
ATI super damper
Kooks 1 7/8 stepped 2 inch headers, 1 ft of 3 1/2 pipe off collectors to bullets dumped

Numbers on dyno 537 hp / 461 tq

I'm actually pleased with HP numbers but the torque seems kinda low to me , it was dynoed with 15 inch skinnies up front and my buddies 18's on the rear ..... My question is , could have the rear 18's hurt the numbers , also could it have maybe been the dumps off the collectors ( o2's so close to the end of mufflers ) ?? Let me know what you guys think of my setup

1nastyss

iTrader: (12)

Btw , I have a McLeod RTX twin disk clutch that has roughly 600 mies on it but it did sit in the shop for a year , Clutch slipped a little on the first few passes and started grabbing once it got heated up , maybe part of the problem , also it was a load bearing dyno that was free rolling so maybe that could have not put much of a load on the clutch causing it to act goofy thus hurting torque numbers possibly ????

edcmat-l1

iTrader: (10)

A lighter drum, or less load would not make a clutch slip worse, it would make it slip less.

A short exhaust system, such as open headers, or very short exhaust after the headers, will hurt torque and help HP. This is most likely the case, along with the cam selection.

1nastyss

iTrader: (12)

Thanks for chiming in Ed , I'm gonna get the exhaust changed up here shortly and put some miles on the motor then I'll get ahold of you and send you the data logs for a few changes if needed. Big thumbs up to Ed Hutchings with Hitech Tuning for an awesome tune , very knowledgable and very thorough . I can say I've never had anyone spend the time and perfect the tune like he did , very nice guy , thanks again , car drives great

cdubbzz

iTrader: (11)

Are the heads OTB or prepped by TEA?

quik01ss

iTrader: (24)

What type of dyno was this on my car is very similar to yours cept the heads on a jet I made 530/487 with a head gasket leaking a bit since there was smoke/steam coming out the exhaust.

What gears in the rear?

djfury05

iTrader: (30)

Time for wheelies

1nastyss

iTrader: (12)

They were suppose to have been prepped by LME , This was a dynojety i believe....Im gonna get the graph up soon, ive gotta look at it myself , if its not making the same TQ as cubic inches at 3000 rpm, therea a chance that the cam wasnt installed at the correct degree, that would definently throw the TQ off....Gonna upgrade the exhaust so there is more piping and getr some more miles on this thing and see what happens

1nastyss

iTrader: (12)

Ok fellas , planning for my new exhaust, should I run 3.5 pipe right of the collectors all the way back and dynamax ultra-flo mufflers dumped right before the axel like TD's just no X or H pipe , or should I do a 3.5 custom catback with like a Dynatech splitflo muffler single out and dumped pretty much along the lines of the Mufflex system ????

1nastyss

iTrader: (12)

And of course a cutout if I ran the catback setup , my whole thing is , I hate all the piping in the way of trying to adjust the Torque arm , and tranny removal , and of course the extra weight of a catback, I just feel like I may have lost some low end HP and TQ with setup I have now

Sales@Tick

iTrader: (3)

What is the ICL on the camshaft? It could be that the IVC event is very late causing torque to carry further into the rpm range giving the higher Hp numbers you've got, but causing a greater pumping loss down low when the piston is moving at a slower speed, bleeding off compression and torque.

Late IVC events are great when the piston is moving at 6000rpms+ or you've got 12:1 compression. Not so great at lower CR and lower engine speeds though.

1nastyss

iTrader: (12)

Thanks for chiming in Martin, according to the comp cam spec sheet, the ICL looks to be @ 109.0 , it's a custom grind from Jeff at EPS and installed by LME when they were putting the motor together

Sales@Tick

iTrader: (3)

If it's on a 109, that puts it at 52.5 intake valve close after bottom dead center. That is as late as I like to utilize myself on a fast intake or stock intake manifold that has such a long intake runner.

The open headers and late IVC is what killed your torque, but helped your HP numbers.

fastvet

iTrader: (2)

I like the numbers. My project setup is pretty close to this minus the TF 235's. If I make over 500hp, I am good!!

1nastyss

iTrader: (12)

I'm about to get the exhaust redone and send Ed some data logs so he can tweek my tune if needed. I'm gonna put a few thousand miles on the motor, do an oil change, plugs, and make a couple pulls on the dyno to see what it does then go from there , if it isn't much better I may through around the idea of a new cam .

1nastyss

iTrader: (12)

Martin, with a better cam , is there a good chance I would make just as much if not more HP , and increase tq ..... Or is that gonna take going to a single plane intake like the Mast Motorsports ??

Sales@Tick

iTrader: (3)

I don't want to use the word "better" cam as Geoff is a highly talented fellow, but I think with a "different" cam you can make more torque and still have very similar horsepower numbers.

I would not advise changing to a single plane intake with your current camshaft as you'll be going in even more of the opposite direction IMO.

djfury05

iTrader: (30)

Martin how much torque would you expect to see if he added a full exhaust? I'm kind of in the same boat as far as exhaust goes just a straight dumped y-pipe.

Sales@Tick

iTrader: (3)

This is a tough question to answer, but if I could have my guess I'd say 10-15rwtq.