I'v noticed that a lot of guys with 2.5" and 2.6" pulleys are setting their rev limiter to 7400. Whats the benefit of doing this? I did a search and found no results. PLEASE HELP! If its something worth while then my rev limiter is getting bumped up ASAP! Oh also has anyone done a two step limiter on there ss s/c yet? I would like to get one if my limiter is set a 7400, just for safety measures.

 

my rev limiter is set at 7100, but i still shift at 7k. This ensures that i dont bounce off the rev limiter. 7400 is insane, with out valvesprings, retainers and a neutral balance shaft i wouldnt recommend revving higher that 7k. Infact, i understand that 6800 is the highest we should go with our stock valvesprings. There are some people here who rev that high with stock valves, but i dont think its worth floating a valve IMO. What does it do? Acceleration baby! When u shift to the next gear youll end up higher too. Spinning a 2.6 at 7400rpm makes me wanna pray for the SC, so go get it blessed first.

 

No No No! I'm not going to shift at 7400! I'm still shifting at 7000, but a lot of guys with 2.5 and 2.6 pulley set there limiters to 7400 and shift at 7000. I think I heard somewhere that the car pulls timing or something like 3 or 4 hundred rpm before the limiter, and thats why they set it so high. DOES ANYONE KNOW!?!?

 

I'm set at 7400 but shift at 7200 (cause our tach's are slow as ****) and if you tune it ... it doesn't pull timing (unless you're getting knock).. I'm dyno'ing tomorrow to see how high up this thing still makes power....

 

What size pulley?

 

So wait, no one knows why they set their limiter to 7400???

 

For me, it has to do with the 1/4 mile. I shift at 7K anyway, but when you start trapping 107+ you're at 7K in 3rd gear. By setting the limiter at 7400+, this ensure's that I don't have to shift into 4th gear during the 1/4 mile. The main point of doing it is so you can comfortably shift at 7K without hitting the rev limiter.

 

I orginally wanted to to have mine set at 7100, but the guy who tuned my car told me to set it to 7400 because the car does start to pull timing 300rpm before the limiter.

 

AH! Thats what I though. Thanks for the help everyone!

 

With revving that high, be careful of your balance shafts. Remember, they spin 2x faster than you are revving...

 

7000 is no big deal. I'm not shifting at 7400 FOR THE HUNDRETH TIME!!!

 

The reason for doing this is that the computer starts to pull power out of the motor after 6500 rpms with a 7k redline, because it is anticipating the rev limiter.

Supposedly by raising the rev limiter to 7400 rpms you still shift at 7k if you are paying enough attention and making peak horsepower closer to 7k rpms.

You may think its crazy, but it worked on my car. Also limiting boost in first gear helps too. Try limiting to around 10psi.

You can only stagger the revlimiters in Neutral, 1st, and 2nd gear 3-5 are the same.

 

What do you mean the computer pulls timing? IF you are tuning properly you should be able to control when the car cuts power.

Mine is set at 7400 for the traps, just like BAD06SS said. I shift at 7250, at least that's what my shift light is set at.

 

Its something implemented by gm that hp tuners will not remove.

 

IS there a way to see this with loging in HPT then?

Later

 

When I buy HPTuners, if I set the rev limiter at 7400 I wouldn't have to shift right before the 1/8 mile track ends improving my times from what you guys are saying. I just need like 7100 rpms to cross the line in 2nd gear! Mmmm......

 

they banned me too, and banned again and again... where's dan at, i'll teach him how to come back

viva la selfinfliction!!

<how many acccounts is it going to take to get the point lol>

 

I'm running the 7400 with a 2.55 pulley but I usually shift around 7200... motor only has to hold together for a little bit longer... than the fun begins

 

2.55!?!? What an odd size, where did you get it from?

 

I pushed mine up to 7200, but only use it to avoid limiter when shifting and when I have to race a stage 2 SRT.

 

Nice, that's what I like to hear!

 

show me this. i can show you log after log and the only things that causes timing to be pulled is knock. I have logs that show my RPM going over 7600 and still the only thing that pulls timing is knock.

 

I didn't do the tuning. But he has been using hp since it came out. He has tuned everything from turbocharged corvettes to supercharged avalanches. I am going to have to take his word on it.

 

I have to go see him on Tuesday, i will ask him and tell you what he says.

 

why not just a 2.6? the .05" makes no difference.