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

What RPM for shift light?

Old Feb 1, 2003 | 04:21 PM
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kgkern01's Avatar
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What RPM for shift light?

Just got my Harlan shift light in. What RPM should I setup my shiftlight for? Besides bolt-on's my car is stock. Also what is the stock rev-limiter set at? And What wires did anyone plug theirs into?
Old Feb 1, 2003 | 04:34 PM
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???
Old Feb 1, 2003 | 04:46 PM
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i set mine for 5900, i beleive the stock limiter is 6k...so that lets me shift just before the limiter kicks in...

experiment, set it for 5900, see if you hit the limiter, if you do, back it down a bit.
Old Feb 1, 2003 | 04:53 PM
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Which wire do install for the RPM wire? Red is for the positive turn-on, the black is a ground, and the green is for the tach, which wire on my car do I connect this to?
Old Feb 1, 2003 | 04:57 PM
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Stock limiter is 5800.....so youll need to set it at 5700. Get some programming software and move your limit up. I wire mine into the tach wire going to the insturment cluster.
Old Feb 1, 2003 | 05:00 PM
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Originally posted by kgkern01
Which wire do install for the RPM wire? Red is for the positive turn-on, the black is a ground, and the green is for the tach, which wire on my car do I connect this to?
Check Brent's site under the alarm install for the tach wire. I believe its a gray wire coming off of the PCM.
Old Feb 2, 2003 | 09:08 PM
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Installed thanks for the help, I don't have LT1 Edit or any other programmer to adjust my rev limiter, set it at 5800 tried a few runs and hits rev limiter right as I shift, so I think I'm going to drop it down to 5700 so I don't hit the limiter. D*mn limiter
Old Feb 2, 2003 | 09:35 PM
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White wire, red connector on PCM, pin #13.

Stock rev limiter is 5750.

No reason to tach the car out that high. Stock cam stops making power at 55-5600.

Try running at the track taching it all the way out, then shift at 5500. Garantee you will go fater on the 5500.
Old Feb 3, 2003 | 12:04 PM
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Thanks About to go out and adjust and try again.
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