Drain plug
Le Mans Master
Joined: Mar 2004
Posts: 7,493
Likes: 1,502
From: Little Rock AR
I had a Muncie with oil drain added by previous owner. He drilled a small hole in the low part of the bottom at an angle and tapped it for a small pipe plug. It does not need to be as big as the factory fill plug. Worked OK but you need to be careful not to over tighten it.
Thread Starter
Le Mans Master
Joined: Jun 2019
Posts: 5,481
Likes: 2,190
From: Loveland
Done.... I drilled and tapped a 1/2 NPT drain plug in my trans case. I left the case full of oil when I drill through the case. I used thick grease on the drill and tap to catch the drill shavings. After tapping I flushed a quart of ATF through the case. Then I flushed it with 2 quarts cheap 75W- 85 gear oil. I could fit my finger into the drain hole and pull out more shavings. Installed my new drain plug. Filled with Sta-lube GL4 Hypoid gear oil. It does seem to shift smoother. I hope I got all the shavings. I guess if I am driving and it locks up I will know I goofed.
Is my vette stock?? HAHA
Joined: Oct 2015
Posts: 20,212
Likes: 9,352
From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
The aluminum wont make it lock up, but if they gummed up the synchros shifting my grind. You'll be okay
