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Unread 12-06-2012, 05:41 PM   #1
EOD98WRANGLER
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1998 TJ Wrangler 
 
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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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Unread 12-07-2012, 02:58 PM   #2
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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Unread 12-07-2012, 05:22 PM   #3
JeSimmers
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Agreed...a tach is much more necessary with a manual trans vs. an auto.
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Unread 12-07-2012, 05:25 PM   #4
LA-Sahara
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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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Unread 12-07-2012, 05:36 PM   #5
JeSimmers
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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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Unread 12-07-2012, 06:06 PM   #6
--chris--
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What they all said, not needed to operate...
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Unread 12-08-2012, 09:19 AM   #7
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.
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