96ta

Im not sure if this goes here so if its in the wrong spot please move it.

I'm wanting to raise my limiter on my t/a. I have it set to the stock redline and have all stock bottom end and stock top end. what can i safely raise my redline to? Btw i have an 02 ls1.

thanks.

02*C5

iTrader: (1)

While an 02 motor can handle revs up to 7K rpm, because of the stock head set up I would leave the limiter where it is at. The stock springs are lets say not the best along with the stock PR (they tend to flex under heavy load). Your valve-train will start to experience valve float around 6500 RPM and if I remember the stock limiter is set to 6200 for a reason. Over all the stock valve-train set up for the LS1 is shitty.

allngn_c5

iTrader: (3)

Well I think the slightly upgraded GM rod bolts were in the 02 and newer motors so you could add a few hundred more RPMS, but why ? Your power is already falling off? If you get the PCM retuned you might see a benefit, but your stock parts don't really need anymore rpms. I just don't see the need. Rpms for the sake of RPMS.

allngn_c5

iTrader: (3)

He's right! I would listen. Good points. You went technical, I went simple. Good job man. You beat me to the punch. Good accurate info. Pretty much what GM was thinking.

Magnet

iTrader: (36)

I had my A4 shifting around 6200-6250 instead of the stock 6000, and bumped the limited to 6400 to make sure it didn't hit it, this is considered extreme by some...

My M6 limiter is set at 63-400 I can't remember at the moment and I shift at 6200 also. For what it is worth, the top stock internal guys shifted their cars higher and picked up some even though the majority of the crowd says its past your power curve.. just food for thought..

bww3588

iTrader: (49)

id say if you upgraded valve springs and pushrods, there is a little power to be had by rasing the limiter a few hundred RPM to about 6500, but i wouldnt with stock stuff. there are plenty of people that have missed a shift on a totally stock motor and bent pushrods by over revving it.

01ssreda4

iTrader: (96)

There's no power there, leave it alone.

Magnet

iTrader: (36)

I'm sorry, but not true...

02*C5

iTrader: (1)

Is the HP gains he will see worth the instability of his valve train and very possibly have valve train failure. Not only Gm but independent testing have shown that a stock set up experiences valve float at 6500 rpm. Just because your engine withstood a 300 rpm raise it does not mean that his engine will be able to with stand it. Better yet if he experiences valve train failure will you be willing to pay for him fixing it...

Magnet

iTrader: (36)

The point of this thread was to see what he should put his limiter at... I didn't tell him to go 6500 not even close so I don't know why your picking on that number. It is incorrect to say there is nothing to be gained by shifting higher because "there is no power up there".

I told him it was borderline, but I told him my experience and the experience of some of the other top stock internal cars in the nation. It is up to him where he wants to put it and how far he wants to push his car, its not for you to decide and just tell him there isn't any power up there so he won't raise the limiter..

That's like telling someone not to launch hard because there is nothing to be gained, but in realty your just trying to stop them from blowing there rear end. I don't know his situation, maybe he has plenty of money and is trying to max out his car. I would like to give the best information I can.

That all being said, OP, there is potential hazards to shifting upwards of 62-300+. If you cant afford to fix it and aren't willing to risk it then I wouldn't do it. However bumping your shifts from 6000 to 6200 in my opinion is relatively safe, and could potentially give moderate gains..

soundengineer

iTrader: (16)

I pulled a stock 2001 Camaro to 6500 rpm...
entered the HP and torque data into a spreadsheet I made to calculate optimum shift points...

roughly 6100 on the stock cam for the 01/02 fbody's

there is no benefit from shifting any higher...