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Old 10-20-2019, 11:02 AM
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Default first time start up

So I have a 383 SBC that should make about 360hp so it is not a high compression motor. I am trying to start it up. I know how to put the hot battery cable on the correct stud of the starter and jump it with a screwdriver. I have the small JEGS starter-

With a full charge on the battery, I can get the motor to barely turn over. I mean barely, half a rotation maybe. Tried a few times, starter got hot. Motor never spun enough to fire. What is going on?
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Old 10-20-2019, 12:06 PM
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Timing ?
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Old 10-20-2019, 12:33 PM
bob w bob w is offline
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Pull the spark plugs and see if it turns over. Or, with the plugs removed try turning it over with a breaker bar and socket on the crankshaft balancer bolt.
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Old 10-20-2019, 04:45 PM
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engine turns easy enough with the plugs still in using a standard half inch ratchet so it would seem the engine is ok. I am using jumper cables for battery cables. I am thinking these are not thick enough and/or too long, and messing up the amount of current actually getting to the starter. Could this be right?
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Old 10-20-2019, 04:54 PM
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Quote:
Originally Posted by Bonehead's brother View Post
engine turns easy enough with the plugs still in using a standard half inch ratchet so it would seem the engine is ok. I am using jumper cables for battery cables. I am thinking these are not thick enough and/or too long, and messing up the amount of current actually getting to the starter. Could this be right?
Yep, you got it. Jumper cables will run a starter on the ground, but not enough amperage to run one and turn over an engine. You're gonna have to hook up a real battery cable , hot and ground, to get it to turn over.
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Old 10-20-2019, 05:37 PM
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What Bama said!
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Old 10-20-2019, 05:42 PM
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On my way to success. Thanks guys!
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