How did you measure your 0-60?

If you really want dyno numbers, go somewhere else, because that dyno obviously reads low.

 

I saw half a dozen LS2 GTO's get dyno'ed at HPE a few years ago. Manuals made around 330, 345 with a tune and CAI.

 

A dyno is like any other instrument that measures something. If they are out of calibration, the numbers are meaningless. Sounds like shop is the one with the problem.

 

thanks guys for the help..Im working on talking to other shop owners about my dyno reading and trying to see which shop i want to go with to dyno my car. I am hoping for at least 335 or 340. My 0-60 time was taking with one of my buddies stop watch; I know it is not a 100 percent but the car flys for being completely stock. If you could get a qucik shift your 0-60 time is better than the factory claims.

 

FRANCE7

Where do you live in CT??? I live in Gales Ferry. Drop me a PM if you need to.

If you want we can get together and take a look at it. I just sold my modded 06 Z51 coupe and bought a clean sheet 2011 Grand Sport vert to play with.

The 06 dynoed at 365 with headers, vararam and ported TB before the tune. Wish I would have dynoed it after but, thats the way the ball bounced.

Welcome to the forum and dont be afraid to drop by.

Bill Curlee

 

thanks guys for the advice. I was just really pissed sitting there at the shop with an ls2 putting down 294 to the wheels. I am pretty sure that the dyno was the problem and not my car, but i am going to double check and try one more dyno from a more reputable place. Thanks again guys i feel alot better about all that bs.

 

thanks man sounds good. I am busy right now but maybe sometime in the near future i could take u up on that offer. send me a message with your cell number or email so i could contact you, im not used to this forum yet i just started yesterday.

 

That's what I was afraid of

Good luck with another dyno...I'm sure your car is just fine. If you were worried you should've just asked what a typical LS2 dynos at that shop. If they said "340" then you'd know you have issues.

 

dont waste anymore $ on dyno pulls for your car. who cares what it puts down lol

just spend the $ on mods.

 

Take it to a shop that other forum members have used.

I would tear up the 294 dyno sheet and pretend it did not happen.

 

I don't know if you have ever had the car on a dragstrip, or if you have any experience driving on a dragstrip...

But my LS2 with only a Vararam CAI and tune ran 12.08 @ 115 mph at our local dragstrip.. I'm automatic.. (A4)

I'd suggest you try it at the local dragstrip,.........you should run low 13's with street tires...if drag radial you should be in the 12's no problem..

I see your are from Ct. I used to live in Stamford, I'm still close I live in Westchester County NY.. and will be going to Englishtown Nov 6 and Nov 13 for an all Corvette race. There will be plenty of people there to help you .. also Some GREAT TUNERS..

Cartek, East Coast Supercharging, Vette Dr. all will be there to help you out for NO Charge !!

 

That's pretty good considering a stock LS2 is 4.3-4.4 sec from 0 to 60. You must be one hell of a driver!

 

Can either msatchmo or the OP please tell me how you time your car 0-60 and get a reading right down to the "tenth" of a second ?

Are you using a stop watch, and clicking it at 60..that is The timer can very easily anticipate the 60 mph speed and click it a "tenth" early...

The only way I get times on my car are at the dragstrip, that has NO HUMAN INTERVENTION with the timing.. the clock starts as soon as the car moves forward, and I get my 60' time when the front tire breaks a Lazar beam .. its accurate to the 5th decimal point .00001 !

It (the track timer) also will give me the 330' time, and the 660' time & MPH (660' id 1/8 of a mile) I also get 1000' time down to the 4th decimal point and 1/4 mile time & MPH !

Those performance "Toys" that you hook up to the dash are just that "Toys" yes they will give you an "Approximate 0-60 time but its NOT accurate to closer than .10 (tenth)

In drag racing a "Tenth" of a sec. is an eternity... example... assuming both care are traveling at a speed around 100 - 115 mph + or - a few mph wont matter, but if I run 12.20 at 110 mph and you run 12.30 at 108 mph that tenth of a second I won by ,, translates to about 1 Full Car Length!. many of my races are decided by .002 (2 thousandths of a sec.

I have seen win slips go to the 4th decimal point i.e. car #1 beat Car #2 by .0004 or 4 Tenthousants of a sec)

 

Sorry, but I don't agree with this. It's a GREAT useful tool for getting a baseline. I dyno'ed a couple of weeks back with another Z06. We both put down indentical rwhp #'s and nearly identical rwtq #'s. We both were stock. If I put down 50 less HP than my buddy, then I would know something is wrong with the car, not the dyno. To call it worthless is a little rediculous. Sure, cars do run differently off the dyno, but in reality how much different.

 

I would recommend hitting another dyno. If possible do as I stated above...find a couple of Corvette buddies to go with to see how they compare. If you are still way down on HP, selling the car is a little drastic. It could be something as simple as a dirty MAF. I'd find out what the issue is first. As long as you have compression on all 8 cylinders, I would doubt you have any serious issues.