Rear freeze plug leak, what would you do?
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Junior Member
Joined: Mar 2015
Posts: 2
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From: East Tennessee
Car: 86 Sport Coupe
Engine: Warmed over 350
Transmission: 700r4 V case
Axle/Gears: 3.43
Rear freeze plug leak, what would you do?
I have a coolant leak at the back of my 2.8. I'm assuming it's a freeze plug, but I won't know until I see the back of the block.
Would you recommend I pull the engine or pull the 700r4? I've done both, but not in a thirdgen.
All advice is appreciated, thanks.
Would you recommend I pull the engine or pull the 700r4? I've done both, but not in a thirdgen.
All advice is appreciated, thanks.
Joined: Aug 2011
Posts: 661
Likes: 7
From: Texas
Car: 91 Firebird/88 Firebird/91 Formula
Engine: V6 3.1/V8 5.0/V8 5.0
Transmission: 4L60/700R4/4L60
Axle/Gears: 3.23/2.73/2.73
Re: Rear freeze plug leak, what would you do?
Still waiting to do this to my 3.1 V6. Initially planned on dropping the tranny but realized I would have to get the car pretty high. So I resolved myself to pull the engine and replace them all. Still haven't done it yet though.
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Joined: Jan 2012
Posts: 531
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From: On TGO
Car: 88 GTA
Engine: Built 355 to install
Transmission: Built turbo 350
If one is leaking the rest can let loose any time.... 
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iTrader: (4)
Joined: Jun 2014
Posts: 667
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From: Brainerd, MN
Car: '84 Trans Am
Engine: 357 SBC
Transmission: 700R4
Axle/Gears: 10 Bolt 3.73, Torsen Diff
Re: Rear freeze plug leak, what would you do?
I would recommend pulling the engine. Use it as the opportunity to replace hard to get to seals, etc (assuming this isn't a daily driver).
Joined: May 2008
Posts: 416
Likes: 82
From: Viersen, Germany
Car: 85 Iron Duke, 88 GTA and 92 TA
Re: Rear freeze plug leak, what would you do?
You do not need to pull the engine. Done the whole story in April last year. You have 6 plugs in the V6. 3 on the back of the block, 1 on the front and 1 on the left and one on the right side of the block.
Removed the transmission, starter, knock sensor and the oil filter adapter. The easiest one on the front doesn't need any parts removed.
But I must admit that I have my own auto lift. With just a jack I wouldn't try it...
Removed the transmission, starter, knock sensor and the oil filter adapter. The easiest one on the front doesn't need any parts removed.
But I must admit that I have my own auto lift. With just a jack I wouldn't try it...
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