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There is supposed to be a tab on the timing cover a lot of times it gets broken off. GoodluckJoe

I have a 1986 Suburban with a 350.More than likely it's in the same place as mine. Look behind the water pump from above, more than likely your TVS switch will be in your way. However, it is there. The vibration dampner will identify TDC almost completely verticle.Behind the pump you should find a traditional timing gauge along with a tube extending upwards through the gap between the water pump and block. It is possible to set the timing to this mark, however like mine, you may have to remove the water pump to clean and verify it's accuracy with alittle tweak or Two. The tube is for a special kind of timing indicator/light for the shop tech to use. I know, it is seems like a dumb idea compared to the traditional timing mark between the power-steering pump and bottom of the water-pump, but what can you do, it was the 80's.

If you are having trouble seeing the timing marks spray carb cleaner or Brake clean on it till it cleans up. I have also pushed a rag down on it with a long screwdriver and wiped it off as well.Stan

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โˆ™ 2015-07-17 17:44:07
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Q: Where is the timing tab on a 1986 Suburban 305?
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Related Questions

Picture of timing tab marks on 79 olds with a 305 chev engine?

If you will look stright down behind the water pump, you will see the timing tab.

How can you distinguish between a Chevy 350 and a Chevy 305?

The easiest way is to look at the Harmonic Balancer. The 305 has a wider thicker balancer than the 350. Pus the timing tab on a 305 is located ON the timing cover and the 350 is bolted on the with the cover bolts. Riky9

Where are the timing marks on a 1986 Chevy truck 305 Mine has no markings or indicators?

The only thing I can think of is that the timing tab on your engine has been removed. The hash mark should still be on the balancer, but may be obscured by dirt, grease, or accessories. You might be able to get a new timing tab from an auto parts store or dealer. Some professional quality timing lights have a timing readout, which would eliminate the need for direct reading.

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there will be a timing mark on the harmonic balancer. and a timing tab on the timing chain cover. point your timing light at the timing tab and you should see the timing mark on balancer. if not timing is way out.markstang.

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you can purchase an aftermarket timing tab which bolts to the timing cover.

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I believe what you're talking about is that there is two timing tabs on the motor. One at 1 o'clock and 1 at 5 o'clock. The top one is hard to see so gm put one on the bottom where it is easier to get to or see. If you use the top tab you hook your timing light to the #1 plug wire and if you use the bottom tab you hook to the #5 wire

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Thay all did in the 80s

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Where is the timing tab located on Chevy 350?

it should be just to the right(if your facing the engine) of the water pump attached to the timing chain cover, real close to the harmonic balancer if it is a truck your working one it is hard to see and get a timing light close to because of the a/c compressor and the power steering pump belt i just retimed my 85 c-10 and i removed the fan a/c compressor and the power steering pump so i counld get the correct angle to the tab on my truck i could not read the marks anymore so i put a new tab on my you can get them at autozone or napa they should stock them and they install using two of the timing chain cover bolts but then you also have to find your TDC on you number one cylinder and mark it a zero on the timing tab or buy some timing tape and put it on the balancer at TDC

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How do you adjust timing on a 1976 350?

Disconnect the vacuum advance hose from the distributor and plug it. Make a white or yellow mark on the harmonic balancer at the 0 degree mark, and a mental note of the numbers on the timing tab. Connect a timing light to the #1 ignition wire and start the engine. Aim the timing light at the timing tab and observe where the white or yellow mark aligns on the timing tab. Loosen the distributor hold-down clamp and rotate the distributor to achieve the desired timing. Most '76 model 350's had very low compression from the factory, and benefit greatly from increased advance. The factory settings were probably around 6 or 8 BTDC but they can be set up to 16 BTDC depending on fuel quality. It would be unwise to advance the timing to a point that caused pinging under part-throttle, as this could easily result in broken pistons. Reconnect the vacuum hose when finished.

How do you time a 1974 350 Chevrolet?

Plug the vacuum line to the distributor. Run the engine while pointing a timing light at the timing cover mark. Timing light should be connected to #1 plug wire. Turn distributor until the timing mark on the balancer lines up with the #8 on the timing tab. This is a good staring point. Most will take about 12 degrees.