Guest Removed Posted April 28, 2010 Report Share Posted April 28, 2010 Ok, how about Matt needs to figure out why his car drops off power and traps like a stock M6 LT1. Then we move on. brian has those answer's..... but i guess its not my place to speak Quote Link to comment Share on other sites More sharing options...
Squale iii Posted April 28, 2010 Report Share Posted April 28, 2010 I'm sticking with bad/incorrectly gap'd/old plugs...lol. Quote Link to comment Share on other sites More sharing options...
MrMeanGreen Posted April 28, 2010 Report Share Posted April 28, 2010 I'm agreeing, start with the basics and move on. By Matt stating it was a woman first-owner, chances are she didn't do maintenance shit other than oil changes. Rob, we know where you're coming from. I'm in the same boat. Quote Link to comment Share on other sites More sharing options...
Squale iii Posted April 28, 2010 Report Share Posted April 28, 2010 brian has those answer's..... but i guess its not my place to speak lol Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted April 28, 2010 Report Share Posted April 28, 2010 I'm sticking with bad/incorrectly gap'd/old plugs...lol. your thinking backwards. bad plugs will make it go rich, not burning all the fuel off..... a weak fuel system(ie plugged filter, weak pump , or just not enough fuel system, cause of the dumb reg in the tank crap on these you see fuel pressure drop at high rpm above 400ph, till you move the regulator) will cause a lean issue. but high mileage plugs dont help either. Quote Link to comment Share on other sites More sharing options...
RUTAN TA1647545492 Posted April 28, 2010 Report Share Posted April 28, 2010 Ok, how about Matt needs to figure out why his car drops off power and traps like a stock M6 LT1. Then we move on. I think it may be partially due to manifolds and convertors still on the car and an auto but i agree it should trap 104-106 Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted April 28, 2010 Report Share Posted April 28, 2010 lol dayton..well that explains it Quote Link to comment Share on other sites More sharing options...
Squale iii Posted April 28, 2010 Report Share Posted April 28, 2010 your thinking backwards. bad plugs will make it go rich, not burning all the fuel off..... a weak fuel system(ie plugged filter, weak pump , or just not enough fuel system, cause of the dumb reg in the tank crap on these you see fuel pressure drop at high rpm above 400ph, till you move the regulator) will cause a lean issue. but high mileage plugs dont help either. I'm no mechanic, you're probably right. I know there's a certain order you usually do when doing diagnostic work like this. I just know in my car I had one bad plug and it took me 2 goddamn weeks to figure out why it didn't run so well WOT...LOL. I'm kinda a moron though, I'm sure someone more knowledgeable would have realized it sooner. Quote Link to comment Share on other sites More sharing options...
MrMeanGreen Posted April 28, 2010 Report Share Posted April 28, 2010 I think it may be partially due to manifolds and convertors still on the car and an auto but i agree it should trap 104-106 Yup, I agree 100%. With headers, catless y-pipe, and even as an auto, I'd like to see 108-110mph. Quote Link to comment Share on other sites More sharing options...
RUTAN TA1647545492 Posted April 28, 2010 Report Share Posted April 28, 2010 Yup, I agree 100%. With headers, catless y-pipe, and even as an auto, I'd like to see 108-110mph. I can agree with that mph with those mods Quote Link to comment Share on other sites More sharing options...
MrMeanGreen Posted April 28, 2010 Report Share Posted April 28, 2010 Matt, did you happen to remove your floor mat when you ran at the track? Serious question. Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted April 28, 2010 Report Share Posted April 28, 2010 Matt, did you happen to remove your floor mat when you ran at the track? Serious question. he left it in..hoping for the toyota mod... Quote Link to comment Share on other sites More sharing options...
V8 Beast Posted April 28, 2010 Report Share Posted April 28, 2010 Throttle cable mod Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted April 28, 2010 Report Share Posted April 28, 2010 Throttle cable mod that only happens when Hal is around.:bangbang: Quote Link to comment Share on other sites More sharing options...
TurboRust Posted April 28, 2010 Report Share Posted April 28, 2010 floor mat was in.. stock plugs were just removed.. showing almost .080 gap.. new plugs wires pcv and fuel filter getting finished now. Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted April 28, 2010 Report Share Posted April 28, 2010 floor mat was in.. stock plugs were just removed.. showing almost .080 gap.. new plugs wires pcv and fuel filter getting finished now. try to blow thru the fuel filter and see how plugged up it is Quote Link to comment Share on other sites More sharing options...
gillbot Posted April 28, 2010 Report Share Posted April 28, 2010 I do the 1-2 shift at 6700, the rest at 6900. I was shifting at 7000-7100 but the trans is getting weaker and weaker so I had to lower it to keep it off the limiter at 7200 Quote Link to comment Share on other sites More sharing options...
99ta Posted April 28, 2010 Report Share Posted April 28, 2010 I do the 1-2 shift at 6700, the rest at 6900. I was shifting at 7000-7100 but the trans is getting weaker and weaker so I had to lower it to keep it off the limiter at 7200 you have a cam though. he is stock. I think your confusing him...... Quote Link to comment Share on other sites More sharing options...
gillbot Posted April 29, 2010 Report Share Posted April 29, 2010 you have a cam though. he is stock. I think your confusing him...... or i'm lazy and didnt read through all this. LS1 Guys...What do you shift at/rev to? I answered? Quote Link to comment Share on other sites More sharing options...
Chadz89GTA Posted April 29, 2010 Report Share Posted April 29, 2010 or i'm lazy and didnt read through all this. I answered? Read the thread before you make posts! Quote Link to comment Share on other sites More sharing options...
nurkvinny Posted April 29, 2010 Report Share Posted April 29, 2010 Funny. Nobody has mentioned the driver mod. Quote Link to comment Share on other sites More sharing options...
V8 Beast Posted April 29, 2010 Report Share Posted April 29, 2010 5800 - 6000 works very well. Quote Link to comment Share on other sites More sharing options...
Snowflake Posted April 29, 2010 Report Share Posted April 29, 2010 Funny. Nobody has mentioned the driver mod. but its an auto. I thought it was push the gas and go? Quote Link to comment Share on other sites More sharing options...
TurboRust Posted April 29, 2010 Report Share Posted April 29, 2010 Funny. Nobody has mentioned the driver mod. I dunno.. i drove the shit outta the mach1 had some of the better times around for a street car, and I gotta say.. his car was the most unchallenging boring "sports car" i've taken down a track... matt, his dad, and myself all ran 2-3 passes each in the 13.6x range.. so no driver mod here. Quote Link to comment Share on other sites More sharing options...
ls1plus Posted April 29, 2010 Report Share Posted April 29, 2010 My car is auto, and currently shifts at 5500rpm. Using previous knowledge and glancing around on ls1tech it seems that ls1s breathe more up top and lots of people are shifting between 6200-6500 on a basically stock or bolt on car. Now I know from my dyno that peak hp is about 5500, so what would revving the car out to 6500 do for me? Wouldn't it be diminishing returns? I.E., you're hp/tq is decreasing as you increase your revs? Or is it a catch 22 because the car has to shift more times and I'm in a higher gear going through the traps that I may actually be suffering at the track? I'm just trying to see what the general consensus was, and what everyone felt was a safe rpm to rev to. I am assuming from your first post it is all stock valvetrain. With stock valvetrain, 6k is all the farther i would push it. When my valvetrain was stock, i bumped the limiter to 6200 and ended up breaking 3 springs and 2 pushrods if i remember correctly. Quote Link to comment Share on other sites More sharing options...
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