jmoore4294 Posted May 26, 2007 Report Share Posted May 26, 2007 Is there a physical limiter placed somewhere on the engine that I can remove, or is it programed into the computer. Thanks. Quote Link to comment Share on other sites More sharing options...
RocketMan83 Posted May 26, 2007 Report Share Posted May 26, 2007 Its programmed into the computer. Check out the 60degreev6.com store, they sell chips that will change your limiter. Quote Link to comment Share on other sites More sharing options...
Crazy K Posted May 26, 2007 Report Share Posted May 26, 2007 Why do you want to change it? what engine do you have? there are physical limitations inherent in the 3100, valve float occurs around 6000 RPM. so there would be no point in surpasing this, without engine mods. Quote Link to comment Share on other sites More sharing options...
jmoore4294 Posted May 26, 2007 Author Report Share Posted May 26, 2007 what engine do you have? I have the 3.4 Quote Link to comment Share on other sites More sharing options...
kuwaitliberation Posted May 26, 2007 Report Share Posted May 26, 2007 The 3.4 redlines at 7K. To increase the rev limit on that you would have to go in with different lifters, for sure. The original stamp lifters wouldn't hold up. Get something lighter weight, for sure. Quote Link to comment Share on other sites More sharing options...
jmoore4294 Posted May 26, 2007 Author Report Share Posted May 26, 2007 So what was GM's reasoning for keeping it under 4,300 RPM when the car is in park? And can you get rid of that? Quote Link to comment Share on other sites More sharing options...
kuwaitliberation Posted May 26, 2007 Report Share Posted May 26, 2007 So what was GM's reasoning for keeping it under 4,300 RPM when the car is in park? And can you get rid of that? I see what you are talking about. Yes, it has a rev limiter when in park. I don't know about that one at all. I don't worry that much about it, though. I have seen that on all the automatics over the past 20 or so years. It's just something they do, I guess. Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted May 26, 2007 Report Share Posted May 26, 2007 The 3.4 redlines at 7K. To increase the rev limit on that you would have to go in with different lifters, for sure. The original stamp lifters wouldn't hold up. Get something lighter weight, for sure. stamped lifters? did you mean rockers or are the lifters stamped too? Quote Link to comment Share on other sites More sharing options...
kuwaitliberation Posted May 27, 2007 Report Share Posted May 27, 2007 The 3.4 redlines at 7K. To increase the rev limit on that you would have to go in with different lifters, for sure. The original stamp lifters wouldn't hold up. Get something lighter weight, for sure. stamped lifters? did you mean rockers or are the lifters stamped too? Damn, I ment rockers. I had left my beer down stairs and when I do that, I can't focus very well on anything else. Quote Link to comment Share on other sites More sharing options...
Crazy K Posted May 27, 2007 Report Share Posted May 27, 2007 So what was GM's reasoning for keeping it under 4,300 RPM when the car is in park? And can you get rid of that? here's what I have to say. EVERYONE I have seen or heard wanting to do this is interested in doing so so that can do neutral drop shifts. BAD BAD BAD BAD BAD IDEA! if this is what you want to do..... the limiter is designed to prevent engine damage. the limiter at a higher amount like 6000 in neutral would allow the engine to continue past 6000 on the inertia it has already gained... My experience with this is in my 91 vert, which had a bad tranny. when the tranny would let loose the engine would free rev... even after the injector pulses are cut, the engine rpms surpass 8000.... and it was a 3.1 Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted May 27, 2007 Report Share Posted May 27, 2007 The 3.4 redlines at 7K. To increase the rev limit on that you would have to go in with different lifters, for sure. The original stamp lifters wouldn't hold up. Get something lighter weight, for sure. stamped lifters? did you mean rockers or are the lifters stamped too? Damn, I ment rockers. I had left my beer down stairs and when I do that, I can't focus very well on anything else. lack of beer causes loss of focus Quote Link to comment Share on other sites More sharing options...
rockfangd Posted May 27, 2007 Report Share Posted May 27, 2007 netral drop shifts are the worst thing you can do for your car. Too many people are dumb enough do do stupid shit Quote Link to comment Share on other sites More sharing options...
CSI_MuNkY Posted May 27, 2007 Report Share Posted May 27, 2007 Yeah, neutral drops are bad... I want to get rid of the limiter in my 95 GTP too though. NOT because I want to do drop shifts. Matt has a G-tech that he says is pretty accurate, in order to set it up you have to rev the engine up to 5k while in park so the unit can get readings from the cars electrical systems. The problem you will have getting your 95 CS changed is that your car is most likely OBD 1.5 which there is currently no chip for, and no definitions for tuning the engine. You would have to do an OBD 1 or OBD 2 swap first. But if your willing to put that much work and time into the swap just to get a G-tech mounted, why not save yourself the hassle and go to a dyno? lol Jamie Quote Link to comment Share on other sites More sharing options...
hell_raiser Posted May 28, 2007 Report Share Posted May 28, 2007 my limiter dose not when its in park with the parking break on , why beats me i just was sitting in the shoppers drug mart parking lot board so i wanted to here the rev limiter, then i noticed it wasn't working i hit 6k i was like wtf. kinda scared me, lol i think my trans is packing er in though harsh down shifts and delade up shifts like hold it to the floor and 2 Mississippi's later she shifts lol Quote Link to comment Share on other sites More sharing options...
Crazy K Posted May 28, 2007 Report Share Posted May 28, 2007 my limiter dose not when its in park with the parking break on , why beats me i just was sitting in the shoppers drug mart parking lot board so i wanted to here the rev limiter, then i noticed it wasn't working i hit 6k i was like wtf. kinda scared me, lol i think my trans is packing er in though harsh down shifts and delade up shifts like hold it to the floor and 2 Mississippi's later she shifts lol I'm speachless. and you edited it too! Quote Link to comment Share on other sites More sharing options...
Miko K Posted May 28, 2007 Report Share Posted May 28, 2007 Well, I guess I will share- I swapped a 5-speed in my CS and still have the AT PCM, which has the 2 rev limiters in it, so I am going to use my little clutch pedal switch to activate the "PARK/N" limiter when the clutch is depressed and switch to "D321" limiter when the clutch is released, this way even my wife can drive it with no problem (set at 2000RPM) and perfect launching every time(set at 3000RPM). It will probably work good if I can keep my foot on the gas @ WOT and just work the clutch between shifts. Quote Link to comment Share on other sites More sharing options...
Crazy K Posted May 28, 2007 Report Share Posted May 28, 2007 Well, I guess I will share- I swapped a 5-speed in my CS and still have the AT PCM, which has the 2 rev limiters in it, so I am going to use my little clutch pedal switch to activate the "PARK/N" limiter when the clutch is depressed and switch to "D321" limiter when the clutch is released, this way even my wife can drive it with no problem (set at 2000RPM) and perfect launching every time(set at 3000RPM). It will probably work good if I can keep my foot on the gas @ WOT and just work the clutch between shifts. 3800 pcm? are you saying the pcms rev limiters are that low? Quote Link to comment Share on other sites More sharing options...
hell_raiser Posted May 28, 2007 Report Share Posted May 28, 2007 my limiter dose not when its in park with the parking break on , why beats me i just was sitting in the shoppers drug mart parking lot board so i wanted to here the rev limiter, then i noticed it wasn't working i hit 6k i was like wtf. kinda scared me, lol i think my trans is packing er in though harsh down shifts and delade up shifts like hold it to the floor and 2 Mississippi's later she shifts lol I'm speachless. and you edited it too! lol Quote Link to comment Share on other sites More sharing options...
SleeperRed90TGp Posted May 28, 2007 Report Share Posted May 28, 2007 So what was GM's reasoning for keeping it under 4,300 RPM when the car is in park? And can you get rid of that? here's what I have to say. EVERYONE I have seen or heard wanting to do this is interested in doing so so that can do neutral drop shifts. BAD BAD BAD BAD BAD IDEA! if this is what you want to do..... the limiter is designed to prevent engine damage. the limiter at a higher amount like 6000 in neutral would allow the engine to continue past 6000 on the inertia it has already gained... My experience with this is in my 91 vert, which had a bad tranny. when the tranny would let loose the engine would free rev... even after the injector pulses are cut, the engine rpms surpass 8000.... and it was a 3.1 Gotta ask you, pray tell how did the motor get to 8k with no fuel and how did you measure this 8k Just curious Jud Quote Link to comment Share on other sites More sharing options...
Crazy K Posted May 28, 2007 Report Share Posted May 28, 2007 Gotta ask you, pray tell how did the motor get to 8k with no fuel and how did you measure this 8k Just curious Jud 91 cs with a Ub3 digital gauge basically like a slingshot. it continues on it's accelerating momentum. if you press hard enough in park or neutral, the rpms will pass the 4000 limiter, and immediately drop, but you could still get to.... say 4500. Quote Link to comment Share on other sites More sharing options...
Miko K Posted May 29, 2007 Report Share Posted May 29, 2007 Well, I guess I will share- I swapped a 5-speed in my CS and still have the AT PCM, which has the 2 rev limiters in it, so I am going to use my little clutch pedal switch to activate the "PARK/N" limiter when the clutch is depressed and switch to "D321" limiter when the clutch is released, this way even my wife can drive it with no problem (set at 2000RPM) and perfect launching every time(set at 3000RPM). It will probably work good if I can keep my foot on the gas @ WOT and just work the clutch between shifts. 3800 pcm? are you saying the pcms rev limiters are that low? Yep, 1998 3800, but I have PH Tuners, so I can set them however I like. Factory P/N is about 3500RPM, don't know the D321, as I let the PCM shift( blower reaching peak torque around 5500RPM anyways). Quote Link to comment Share on other sites More sharing options...
hell_raiser Posted June 4, 2007 Report Share Posted June 4, 2007 i must be lucky ever since my dad owned the car and changed a sensor under the dash it worked intermittently Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.