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

hole sizes

Old Oct 19, 2010 | 01:44 AM
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Default hole sizes

can any one tell me what i need to plug these up. size wise.
Attached Thumbnails hole sizes-holes.jpg  
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Old Oct 19, 2010 | 11:40 AM
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Here's an idea....
Measure the hole size and go to a hardware store. Get several different sized plugs. Try them out. Trial and error works pretty well.
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Old Oct 21, 2010 | 04:24 PM
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soooo you dont know thanks for your reply...just thought id ask and same come time.
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Old Oct 21, 2010 | 04:52 PM
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Looks like 5/8" & 1/2". Can't say what pitch the thread is.

http://www.autozone.com/autozone/par...questid=105006

You might want to get a pair of corresponding o-rings if you want to keep crud out of the evaporator so you can hook it back up sometime in the future (22 & 20mm o-rings).
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