LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Anyone know what size or how to remove the plug in..

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Old May 5, 2011 | 11:46 AM
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GR33N GoblinM6's Avatar
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Default Anyone know what size or how to remove the plug in..

the passenger side head? Its not a 3/8" square, nor is it the 1/4" .. need to remove it to put in my autometer sensor... but i do not have a single tool in my arsenal that can remove it.. its just an odd size square female plug.
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Old May 5, 2011 | 11:58 AM
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It is a 5/16" square drive. I got a driver socket from a Snap-On dealer many moons ago. They are quite common on many different GM engines, at least the older stuff.
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Old May 5, 2011 | 12:02 PM
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awesome, going to Harbor Frieght and see if they have one. thanks!
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Old May 5, 2011 | 02:19 PM
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Look through your 12 point sockets. One will fit it.

Al 95 Z28
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Old May 5, 2011 | 02:52 PM
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Originally Posted by Big Al
Look through your 12 point sockets. One will fit it.

Al 95 Z28
umm.. no.. the plug is female, need a male to put into the plug

ive even tried all my hex wrenches both standard and metric and they wont go in..
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Old May 5, 2011 | 02:54 PM
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A piece of 5/16 square stock chucked in an 8 point socket works.
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Old May 5, 2011 | 02:57 PM
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Originally Posted by shbox
A piece of 5/16 square stock chucked in an 8 point socket works.
did that on my buddy's boat.......works good
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Old May 5, 2011 | 02:58 PM
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ahhh.. thats not a bad idea... i can get that faster than the socket ... i'll do that.
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