LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Times for my LE 383 setup - 1st try, what's my potential?

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Old Sep 1, 2007 | 01:32 PM
  #16  
IrocSS85's Avatar
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cool dude. I'll do that and PM ya back. and that factory tach is hard to read. you need a bigger tach to be able to read it good while racing. (atleast most people will)plus its supposedly a little slow for a fast revving engine like Im sure yours is with the M6. I'll PM ya.
Old Sep 1, 2007 | 01:58 PM
  #17  
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Originally Posted by IrocSS85
cool dude. I'll do that and PM ya back. and that factory tach is hard to read. you need a bigger tach to be able to read it good while racing. (atleast most people will)plus its supposedly a little slow for a fast revving engine like Im sure yours is with the M6. I'll PM ya.
My tach is dead on in the upper RPM's.
Old Sep 1, 2007 | 02:53 PM
  #18  
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but can you read it? I know I cant see my stock tach cause I have my left arm at the 12oclock position and my arm hand blocks my vision to it w/o moving my head. which just makes it hard to see while trying to go down the track and paying attention to anything else.
Old Sep 1, 2007 | 03:15 PM
  #19  
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Originally Posted by IrocSS85
but can you read it? I know I cant see my stock tach cause I have my left arm at the 12oclock position and my arm hand blocks my vision to it w/o moving my head. which just makes it hard to see while trying to go down the track and paying attention to anything else.
I can see it fine.
Old Sep 1, 2007 | 04:58 PM
  #20  
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Get a shift light. Driving a car to 120 mph and watchign the tach while shifting can be dangerous until you get enough seat time. A shift light will take away the head movement.

As for the run, you 8th mile times and mph indicate you could be going 116ish. The 60 needs work and little tweaks should bring it down a couple 10ths. Colder weather will bring it down a couple 10ths too. Mid 11s should be a good goal with a 1.60 60 and some better driving.

It just takes time and money, but you should get there.
Old Sep 1, 2007 | 07:23 PM
  #21  
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Originally Posted by speed_demon24
My tach is dead on in the upper RPM's.
Mines slow 200 rpm by 6k. JP95ZM6, good times and potential there. As was mentioned, looks like mid 11's is possible. Go with the shift light at least, to be consistent.
Old Sep 1, 2007 | 10:31 PM
  #22  
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From: Rochester Hills, MI
Even if the tach IS accurate, I really can't read it reliably to within a hundred rpm while racing, not safely anyway (I'd have to hang up my phone or put the fries down). So, good suggestions on the shift lite. I picked one up today. It has a **** instead of pills, so I'll need a good reference to calibrate it. Anybody know if the RPM reported by the PCM, as displayed by Freescan in realtime, will be accurate? I'd think so, but Freescan has tricked me before, so.....?
Old Sep 1, 2007 | 11:23 PM
  #23  
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I agree get a shiftlight, I was just saying my tach is dead on in the upper RPM's. It's nice to actually keep your eyes straight ahead and not having to look at the tach half the time.
Old Sep 3, 2007 | 11:36 AM
  #24  
SS MPSTR's Avatar
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Originally Posted by speed_demon24
I agree get a shiftlight, I was just saying my tach is dead on in the upper RPM's. It's nice to actually keep your eyes straight ahead and not having to look at the tach half the time.

that, and you can concentrate on other things, like keeping the car straight
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