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Old 03-03-2012, 04:25 PM
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Timing chain Chevy 350

Does anyone know the signs of a stretched timing chain? Reason I ask is because this things runs good right after setting tdc and dropping dist but about two starts later it doesn't wanna start unless adjustment to dist is made and it just gets worst..... Maybe stretched chain is throwing timing off with each rotation?

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Old 03-03-2012, 05:23 PM
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First off, what is the timing set at? second where is the ground connected?
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Old 03-03-2012, 05:46 PM
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if its computer controlled you may want to disable the computer cntrolled advance. If its vacuum advanced you should unplug the vacuum going to it and cap off the carb. Timing should be done with the engine warmed up.
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Old 03-03-2012, 06:13 PM
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No computer ..l..reached tdc ....stabbed dist ...I did leave vacuum hooked up when I started ....this wasn't a rebuild just some valve seals replaced but this thing run good initially and then gets worst with each start
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Old 03-03-2012, 07:01 PM
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Make sure the distributor hold down clamp is keeping the dizzy in place. After you snug it down see if it will move by hand. I had one do that.
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Old 03-03-2012, 07:15 PM
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To check for a stretched chain, take distributor cap off. Move your crank pulley back and forth and see how long before the rotor moves....There is your amount of play in the chain
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Old 03-04-2012, 09:58 AM
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Again, what is the timing set at?
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Old 03-04-2012, 12:31 PM
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When you say set? It's not at zero because damper on harmonic balancer is t approx 2oclock but I found tdc at high noon
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