Stupid V8/auto tach question - JeepForum.com

 
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post #1 of 7 Old 12-06-2012, 05:41 PM Thread Starter
EOD98WRANGLER
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Stupid V8/auto tach question

This may sound stupid, but I am about to swap in a 5.3/4L60E from a 03 Silverado into my 98 TJ. I currently have an I-6/AX15. I'm trying to get all of my ducks in a row and was wondering if I need to hook up my tach. I looked into the Novack tach emulator(to keep it clean), but for $150 I questioned if I even need one at all. If I am retarded please let me know, but from what I am tracking the rev-limiter will kick in before any major damage is done from red-lining and the PCM gets all of its info from the VSS. If there is more to it please let me know. Thanks


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post #2 of 7 Old 12-07-2012, 02:58 PM
mattamd_xp
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The tach is not needed for operation. I think it's nice to know what the motor is doing, but you can tell by ear how much you've got it rev'd up. You can always buy a cheap external tach and put it somewhere visible too.

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post #3 of 7 Old 12-07-2012, 05:22 PM
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Agreed...a tach is much more necessary with a manual trans vs. an auto.

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post #4 of 7 Old 12-07-2012, 05:25 PM
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One of the local guys here used the Novak kit for a LS3(?) motor swap and it didn't work. He ended up with like $3000 labor to get it fixed!
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post #5 of 7 Old 12-07-2012, 05:36 PM
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I know that the Novak module would not work on GEN IV motors, maybe that the issue with his...just a thought.

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post #6 of 7 Old 12-07-2012, 06:06 PM
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What they all said, not needed to operate...
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post #7 of 7 Old 12-08-2012, 09:19 AM Thread Starter
EOD98WRANGLER
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Thanks for all the info. I think I will save the tach for later on down the line if needed.

"Explosive Ordnance Disposal (EOD) is a science of vague assumptions based on debatable data taken from inconclusive experiments with instruments of problematic accuracy by persons of questionable mentality.
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automatic , tach , tachometer , tj , v8

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