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Old 08-18-2012, 10:10 PM
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Timing on a sbc

Okay so I have a sbc 355 with a cam. I bought a distributor and was wanting to know if I find number 1 with tdc. Can I put a socket on the crankshaft pulley and move it to 12 before top fead center that way I dont have to make up for the amount I would have to turn distributor or does the timing tab have to be at 0.

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Old 08-18-2012, 10:15 PM
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You can try to put it on 12 degrees, but chances you'll get the tower on the distributor exactly on #1 is a crap shoot. Just get it close, start it and time it.

I wouldn't use a socket on the crank bolt to turn an assembled motor.
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Old 08-18-2012, 10:18 PM
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Will I know it wont be exact but thts not what I said. It will be close and tht way I dont have to turn distributor as much ratger than if hamonic balancer was right at zero
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Old 08-18-2012, 10:50 PM
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Timing on a sbc

Yes you are correct. With a helper bump the engine over until air is being forced out around your finger. Then turn the crank by hand to 12* BTDC. You can check by pulling the distributor cap to see if the rotor is pointing to #1 or is close. Replace the cap and start the engine to set timing.
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Old 08-18-2012, 10:55 PM
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So the rotor will be pointing at number 1 at roughly 12 btdc ?
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Old 08-18-2012, 10:55 PM
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Some people do it at 0. What would be tge diffetence
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Old 08-18-2012, 11:03 PM
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Hardly any difference, nobody gets it right on, and 12 degrees doesn't take hardly any distributor movement. Start anywhere you like, just get it running and time it to where you want it, if you have vacuum advance, disconnect and plug at the source.
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