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June 29th, 2007, 12:26 AM
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#1 |
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Newbie
Join Date: Oct 2006
Posts: 27
 iTrader: 0 reviews
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Factory Tachometer
I have a 90 5.0, how accurate is the factory tachometer? Is it necessary to put an aftermarket one in or is it safe to keep using the one that came with it?
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June 29th, 2007, 12:30 AM
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#2 |
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Enthusiast
Join Date: Nov 2006
Location: Ft Walton Bch, FL
Posts: 503
iTrader: 0 reviews
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There good till you really start getting into the upper RPM's. They can be as much as 500 RPM's off then.
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Custom engine built from Super Six, Cam from Delk performance, Custom Novi 2000 in the works. My Car www.supersixmotorsports.com www.bc-automotive.com/ |
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June 29th, 2007, 12:53 AM
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#3 |
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MM Fanatic
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I have a 6000 rpm rev limiter and my factory tach frequently shows well above 6500.
The faster I get to 6000, the more inaccurate the tach is. Either my 6000 pill is bad or my tach is wrong, my money is on the tach  I haven't felt the need to get an accurate tach although a small accurate shift light would be nice. I
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June 29th, 2007, 01:53 PM
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#4 |
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Newbie
Join Date: Oct 2006
Posts: 27
iTrader: 0 reviews
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That's kind of what I thought. Thanks for the input.
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June 29th, 2007, 02:13 PM
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#5 |
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MM Fanatic
Join Date: May 2007
Location: Bloomington, IL
Posts: 4,737
iTrader: 0 reviews
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On my 88, the factory tach is off by 1200 rpms on the top end. At the actual rpm of 6000 my factory tach reads 7200 (just past 7). It is already off by 400 rpms at 2600 (it reads 3000).
My 89 is not as bad, only about 600 rpms off at the top end. |
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June 29th, 2007, 05:39 PM
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#6 | |
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MM Fanatic
1990 LX hatch
Join Date: Aug 2006
Location: Hobart Indiana
Posts: 4,391
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 Bolt-on Abraham Lincoln Log motor. With extra wiring. |
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June 30th, 2007, 12:56 PM
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#7 |
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Regular
Join Date: Jun 2007
Location: indiana
Posts: 80
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mines off also and my sfift comes on when it wants to. so i just listen for obscene noises and let my foot off
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"supernatural aspiration" |
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June 30th, 2007, 02:23 PM
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#8 | |
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MM Fanatic
1990 LX hatch
Join Date: Aug 2006
Location: Hobart Indiana
Posts: 4,391
iTrader: 0 reviews
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__________________
Bolt-on Abraham Lincoln Log motor. With extra wiring. |
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June 30th, 2007, 03:51 PM
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#9 | ||
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Regular
Join Date: Jun 2007
Location: indiana
Posts: 80
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