How much timing for 100 -125 shot ?
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I had a M/O tune done to my PCM so Im trying to figure out what is the stock timing on a 98 Z LS1 -A4 at idle and at full advance . My is @ 9 -10* at idle and @40 at 3500 rpm according to my scanner . I am going to have a couple of degrees taken out when I get my tune . Since my PCM has been altered .I just want to know where stock timing was .
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Thanks !! Its probably because its just a $99 code reader scanner . Might not be accurate . LOL . But it does read 40* in park @ 3500 rpm .It didnt make sense to me either .
But it is supposed to be @ 24-26* at full advance ??
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3500 rpm in park is not peak timming. you need to do a real run.
in the few cars i have running 100-150 shot we run 24-26* in them. i do toss a couple gal of 110 in the tank to be safe. but they seem to like between 24-26 my new stock set up i will start with 100 shot just to see what it does and i will start with 24* with full 110 in the tank
in the few cars i have running 100-150 shot we run 24-26* in them. i do toss a couple gal of 110 in the tank to be safe. but they seem to like between 24-26 my new stock set up i will start with 100 shot just to see what it does and i will start with 24* with full 110 in the tank
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Thanks ! Since I dont have the option of changing it myself . Should I ask the tuner to set it to @22 peak with a 125 shot .Would that be OK ? Ill be running 92-93 octane .Of course Ill keep an eye on the plugs , just to make sure .I know every car is different . I was going to pull the timing when I get my tune for my 4000 stall .I dont want to start banging off the rev limiter
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I have a ls3 but for a 150 shot with a Nos plate (125@wheels) I am pulling 8 degrees on pump gas. 26* on motor and 18* on pump,20* on race fuel. We tried 20* on pump and it melted #7 and 8 plugs... tr6s. Tried 18 deg on race fuel and the timing mark on the plugs were still to close to the threads. Switched to tr7s gapped @ .030 and did a dyno run and it was perfect.
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I have a ls3 but for a 150 shot with a Nos plate (125@wheels) I am pulling 8 degrees on pump gas. 26* on motor and 18* on pump,20* on race fuel. We tried 20* on pump and it melted #7 and 8 plugs... tr6s. Tried 18 deg on race fuel and the timing mark on the plugs were still to close to the threads. Switched to tr7s gapped @ .030 and did a dyno run and it was perfect.
Ran good on the dyno on a 100 shot and 200 shot. Perfect plugs and all. Took it to the track and
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Man I hope you are joking right? If not you better put your flame suit on.
Tr6's can be used but they are not good for nitrous because they are a projected tip plug. You would want to use a br6 for around up to a 125 shot and a br7ef for bigger than that. Both of those I mentioned are non-projected tip plugs.
Tr6's can be used but they are not good for nitrous because they are a projected tip plug. You would want to use a br6 for around up to a 125 shot and a br7ef for bigger than that. Both of those I mentioned are non-projected tip plugs.
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I had a M/O tune done to my PCM so Im trying to figure out what is the stock timing on a 98 Z LS1 -A4 at idle and at full advance . My is @ 9 -10* at idle and @40 at 3500 rpm according to my scanner . I am going to have a couple of degrees taken out when I get my tune . Since my PCM has been altered .I just want to know where stock timing was . ![Rolleyes](https://ls1tech.com/forums/images/smilies/LS1Tech/rolleyes.gif)
![Rolleyes](https://ls1tech.com/forums/images/smilies/LS1Tech/rolleyes.gif)