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05-11-2011, 10:51 AM
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#1 |
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1965 Chevy C10, 2005 4.8L/4l60
 
Join Date: Aug 2004
Location: DFW Texas
Posts: 8,539
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LSx Tach output? 4Cyl or 8?
I cant remember what it is and am putting a tach in soon.
__________________
Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684  support our troops! |
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05-11-2011, 11:49 AM
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#2 |
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Registered User
Join Date: May 2011
Location: Bonita, Ca
Posts: 154
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Re: LSx Tach output? 4Cyl or 8?
I used the 4cyl configuration on my tach.
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05-11-2011, 12:51 PM
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#3 |
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1965 Chevy C10, 2005 4.8L/4l60
Join Date: Aug 2004
Location: DFW Texas
Posts: 8,539
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Re: LSx Tach output? 4Cyl or 8?
yours is wired right from the PCM?
__________________
Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684 support our troops! |
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05-11-2011, 12:55 PM
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#4 |
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Registered User
Join Date: May 2011
Location: Bonita, Ca
Posts: 154
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Re: LSx Tach output? 4Cyl or 8?
Yup. Speartech reworked the harness for me. I recall reading on a forum, it may be necessary to add a take up resistor. I did not and everything works correctly.
Last edited by raic65; 05-11-2011 at 01:08 PM. |
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05-11-2011, 01:18 PM
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#5 |
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Has more rust than truck...
Join Date: Apr 2005
Location: Ivanhoe, MN
Posts: 2,421
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Re: LSx Tach output? 4Cyl or 8?
It can be changed in your tune, so a call to your tunner may be in order. If it dosent work, TR65's resistor pull up thread is in the FAQ.
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05-11-2011, 01:53 PM
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#6 |
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1965 Chevy C10, 2005 4.8L/4l60
Join Date: Aug 2004
Location: DFW Texas
Posts: 8,539
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Re: LSx Tach output? 4Cyl or 8?
Thanks guys!
__________________
Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684 support our troops! |
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05-12-2011, 12:01 AM
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#7 |
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Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,117
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Re: LSx Tach output? 4Cyl or 8?
If you're using a factory tach that is not adjustable for 4, 6, or 8 cylinder applications, then you'll need to have the 'tach resolution' changed in the tune from 6 to 3. (for an 8 cylinder tach) If you're using an adjustable aftermarket tach, then just set it for 4 cylinder.
Last edited by ls1nova71; 05-12-2011 at 12:02 AM. |
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05-12-2011, 11:01 AM
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#8 |
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1965 Chevy C10, 2005 4.8L/4l60
Join Date: Aug 2004
Location: DFW Texas
Posts: 8,539
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Re: LSx Tach output? 4Cyl or 8?
Ok, Cool, Thanks Ls1nova71.
__________________
Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684 support our troops! |
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