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It can be anywhere you want it if you are building a motor fom scratch. If you have taken this vehicle apart, then it is where the #1 plug wire comes into the dist. cap. If you were changing the wires, and are bveyond that, then what you will have to do is look down at the harmonic balancer. There will be a tab sticking out of the timing cover, on the drivers side. There will be a slash on the balancer, and it will line up with the 0 mark on the tab. You will have to have someone "bump" the starter to line the two up, and, if you stand in front of the car, and reach down with both hands, you can usually turn the motor a little bit by hand. After lining the two up, take off the distributor cap and notice where the rotor is pointed. You can be 180 degrees off, if the timming mark is lined up, so the rotor could be 180 off, but, the rotor should be pointing somewhere in the 4, or 5 oclock position on the distributor. That is where the factory usually puts ther #1.

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Q: Where is the number 1 point for Chevy big block distributor?
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