Another C3 Puzzler
Thread Starter
Racer
Joined: May 2011
Posts: 373
Likes: 6
From: Dover Delaware
Another C3 Puzzler
I have another C3 Puzzler question...I was doing some underbody cleanup and noticed the pan attached to the underside of the transmission has a small hole at the bottom exactly at the 6:00 position.....and it is not plugged......
Can someone enlighten me as to what the reason for the hole is....and should it remain unplugged??????????
As always thanks for your patience and terrific help...
Mike's 78SA
Can someone enlighten me as to what the reason for the hole is....and should it remain unplugged??????????
As always thanks for your patience and terrific help...
Mike's 78SA
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
That is the bellhousing inspection cover. The little hole at the bottom is a "drain" for any oil leaks that may occur in that area (transmission front seal; engine rear main seal; etc.). If you plugged off that hole, the oil would just collect until it leaked out the [un-sealed] seams on that cover.
P.S. We know that you are 'excited' about this issue. But, you really don't need to raise your 'voice'. {bold type indicates that you are yelling your question/response}
P.S. We know that you are 'excited' about this issue. But, you really don't need to raise your 'voice'. {bold type indicates that you are yelling your question/response}
Last edited by 7T1vette; Jul 9, 2013 at 12:01 PM.
Melting Slicks
Joined: Apr 2004
Posts: 2,008
Likes: 38
From: Space Coast Gator Territory
I have another C3 Puzzler question...I was doing some underbody cleanup and noticed the pan attached to the underside of the transmission has a small hole at the bottom exactly at the 6:00 position.....and it is not plugged......
Can someone enlighten me as to what the reason for the hole is....and should it remain unplugged??????????
As always thanks for your patience and terrific help...
Mike's 78SA
Can someone enlighten me as to what the reason for the hole is....and should it remain unplugged??????????
As always thanks for your patience and terrific help...
Mike's 78SA
Mike, I have a 79 L82 model with a TH 350 trans and have have removed trans and pan several times. That part was not made with a hole, plugged or unplugged from GM. If you can put your finger into it and find no plug, the trans cannot hold fluid and not drive the vehicle. If the car drives, you don't have a problem. A photo of what you are looking at would be helpful, as a 6 o'clock orientation is vague without a 12 o'clock orientation.
A previous owner might have drilled a hole to drain trains fluid, but then a plug would have been added. Sometimes a hole is also made to add a temp sensor to monitor trans fluid temp.
Melting Slicks
Joined: Apr 2004
Posts: 2,008
Likes: 38
From: Space Coast Gator Territory
Thread Starter
Racer
Joined: May 2011
Posts: 373
Likes: 6
From: Dover Delaware
C3 Puzzler
Mike, I have a 79 L82 model with a TH 350 trans and have have removed trans and pan several times. That part was not made with a hole, plugged or unplugged from GM. If you can put your finger into it and find no plug, the trans cannot hold fluid and not drive the vehicle. If the car drives, you don't have a problem. A photo of what you are looking at would be helpful, as a 6 o'clock orientation is vague without a 12 o'clock orientation.
A previous owner might have drilled a hole to drain trains fluid, but then a plug would have been added. Sometimes a hole is also made to add a temp sensor to monitor trans fluid temp.
A previous owner might have drilled a hole to drain trains fluid, but then a plug would have been added. Sometimes a hole is also made to add a temp sensor to monitor trans fluid temp.
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,482
From: Southbound
Cruise-In II Veteran
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From: Hamilton Virginia
