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Old 11-11-2002, 01:24 PM
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Unhappy 327 timing?

I recently bought a 65 Chevy truck with a 327 and I can't seem to get the timing right. It seems to run best when the balancer mark is 2" ahead of the timing chain marker (30btdc) Is it possible that the timing marker is mismatched with the engine?

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Old 11-11-2002, 01:33 PM
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If thats the correct balancer it sounds like the timing chain is streached. Have you had the distributor out? If the timing chain is tight then the distributor may be a tooth off/advanced.
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Old 11-11-2002, 03:17 PM
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its very possible that the balancer (or pointer) is marked wrong for your application, or the outer ring may have spun on the hub, both are quite common on chevys. find your true tdc and remark the balancer,or move the pointer.
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Old 11-11-2002, 03:33 PM
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Is there any way to tell what my true TDC is without pulling the engine apart?
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Old 11-11-2002, 08:01 PM
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pull #1 plug and crank the motor over until you feel the compression stroke push your finger out of the hole. bingo TDC
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Old 11-11-2002, 09:04 PM
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It may be possible that you have the incorrect tag for the damper. Until 1970 the position of the 0 degree mark remained unchanged relative to the keway slot. In 1970 the TDC mark was moved 8 to 9 degrees on the damper which meant that the tag had to be in a corrispondingly different position. Make sure you have the right tag for the damper you have. This can be checked by Copper Top's method or possibly with a top dead centre stop which screws into the spark plug hole. Not sure if this can be done on chevs though!
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