Anyone know what size the square plug is on a 350 tbi passenger side head? I want to hook up my fans correctly using a temp switch. It looks like 3/8" but a standard socket extension just doesn't fit.
CK5
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Square plug in passenger side head
- Thread starter jekquistk5
- Start date
I have no idea on the correct size, but I've got a 1/2" drive extension that I ground down to fit into the hole correctly. I'm sure there is an actuall tool for it though.
master set with sizes listed. http://buy1.snapon.com/catalog/item...8&group_ID=259&store=snapon-store&dir=catalog
so if 3.8 not correct and 1/2 to much should be able to figure it out.
so if 3.8 not correct and 1/2 to much should be able to figure it out.
trustyrusty
Registered Member
HEHE, probably one of those darn Canadian bolts
toomany has the right idea grinding an old 1/2" ext down
toomany has the right idea grinding an old 1/2" ext down
It is a 5/16" square drive.
