Camshaft timing?

Tiny
IVANXGOMEZ
  • MEMBER
  • 1996 CHEVROLET SILVERADO
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 290,000 MILES
I bought a scanner hoping it would have a cam retard offset on it but it didn't. But what it does have is a spark advance that reads in degrees similar to what the cam retard offset would have been. Is there a correlation between the two? Can I use the spark advance to time the engine? I need the camshaft timing
Wednesday, May 28th, 2014 AT 6:56 PM

13 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,556 POSTS
I'm not quite sure I understand. You need the scanner to set the timing on this vehicle as you already know, but the scan tool should have a setting to time. If you can identify the timing from your scanner, run the engine at about 1000 RPM's and adjust the distributor until you get TDC +/- 2 degrees The camshaft timing is below. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Wednesday, May 28th, 2014 AT 7:04 PM
Tiny
IVANXGOMEZ
  • MEMBER
  • 2 POSTS
Okay so what I'm asking is if the spark advance on my scanner what I should be reading in order to set the timing?
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Wednesday, May 28th, 2014 AT 7:12 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,556 POSTS
Is the scanner designed to only read advance? If so, to the best of my knowledge, it won't work.
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Thursday, May 29th, 2014 AT 6:50 PM
Tiny
EPBADBOY
  • MEMBER
  • 1 POST
  • 1994 CHEVROLET SILVERADO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 111,252 MILES
What are the timing marks to be set at on my truck
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Friday, August 21st, 2020 AT 12:39 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
See below


https://www.2carpros.com/forum/automotive_pictures/12900_timing2_2.jpg



https://www.2carpros.com/forum/automotive_pictures/12900_timing_2.jpg



https://www.2carpros.com/forum/automotive_pictures/12900_timing_marks_V6_1.jpg

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Friday, August 21st, 2020 AT 12:39 PM (Merged)
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
This is what i have hope it help
good luck


https://www.2carpros.com/forum/automotive_pictures/99387_v6_chevy_1.jpg

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Friday, August 21st, 2020 AT 12:39 PM (Merged)
Tiny
SYLVIA143
  • MEMBER
  • 3 POSTS
  • 1992 CHEVROLET SILVERADO
  • 143,678 MILES
Hi again and may I get the timing marks and also the firing order and the distributor setting. If I had removed the head of the truck do I still need to have it shaved. What you recommend.

Im really sorry but I dont the engine size know every thing in the motor now is like faded on all the stickers. I think its a 5.7 Some thing V8

Thanks
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Friday, August 21st, 2020 AT 12:39 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,556 POSTS
I have attached a picture of the firing order. Let me know if it helps.
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Friday, August 21st, 2020 AT 12:39 PM (Merged)
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
I attached the marks in which you need to time the engine and the firing order. As for the distributor, that just needs to be turned until you line up the ignition timing using these marks on the crank pulley.

Also, you do not need to shave the head unless it is warped. So if the head is straight then you leave it alone.

Let us know if you have questions. Thanks
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Friday, August 21st, 2020 AT 12:39 PM (Merged)
Tiny
MISTERSTEAM
  • MEMBER
  • 1 POST
  • 1991 CHEVROLET SILVERADO
Engine Performance problem
1991 Chevy Silverado 6 cyl Two Wheel Drive Manual

what is the proper timng setting and where are the timing marks?
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Friday, August 21st, 2020 AT 12:39 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,556 POSTS
Hi:
According to the Mitchelle manual, timing is set at 0 degrees BTDC at an idle. There will be two timing marks, one on the harmonic balancer (indicating degrees) and one is mounted on the timing chain cover.
Let me know if this helps.

Joe
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Friday, August 21st, 2020 AT 12:39 PM (Merged)
Tiny
JIM BARTOW
  • MEMBER
  • 1 POST
  • 1989 CHEVROLET SILVERADO
  • 115,000 MILES
I have a 89 silverado 1500 4x4 w/5.7L motor. My problem is the timing marks on the timing cover are rusted. I can't tell which mark 0 (tdc). If I could see pic of it or tell me which mark is 0 (tdc) it would be helpful in setting my timing.
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Friday, August 21st, 2020 AT 12:39 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,556 POSTS
If they are rusted, take a brillo pad and clean it. IT should come clean. Another thing (I don't like to depend on) is to remove the #1 spark plug, place a long screwdriver into the cylinder and by hand, slowly turn the engine. When the screwdriver comes up and then starts down, that it TDC (right at the summit of its travel).
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Friday, August 21st, 2020 AT 12:39 PM (Merged)

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