Glock's new project: "Fred" w/ 5.3L LS swap info

[glock35ipsc]

Originally Posted by Thealien

I was feeling around inside after removing the plug and it felt like there was a bump or? that had me concerned. Just showing another option with the water pump, sorry if I am stepping on anyones toes? Just trying to help. I would rather mess up a water pump than a head?

Stepping on toes?? Never! More info is better info!!

It seems fairly common to drill the 12mm hole to 3/8NPT, I just figured you could go a little bigger for 1/2NPT. I don't think I could get my little finger in that 12mm hole! I'll have to poke around in there before I start drilling. A friend has one of those optical scopes that can get into restricted places, I'll have to see if I can borrow it and check it out in there.

79gmc5.3 - Do you have the sensor installed already? The temp sensor from the truck should be 3/8NPT, which is larger than 1/8.