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Freeze Plug??

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Old 04-21-2005, 07:10 PM
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Car: 91 Camaro RS...GONE 87 SC (84 Z/28 clone)
Engine: 305 TBI LO3....GONE....305 TPI
Transmission: 700R4 with shift kit
Freeze Plug??

I was at a friends house this afternoon..... and when i was leaving i noticed alot of fluid on the ground....i looked under the front of the car and saw it was coming near the back of the car and first feared it was tranny fluid.....but upon further inspection i noticed it was coolant leaking from the back of the motor... i figured it was most likely a freeze plug...just checking to see what you guys think? thanks
Old 04-21-2005, 07:12 PM
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Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Could be a freeze plug, could be a gasket.
Old 04-21-2005, 07:16 PM
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Car: 91 Camaro RS...GONE 87 SC (84 Z/28 clone)
Engine: 305 TBI LO3....GONE....305 TPI
Transmission: 700R4 with shift kit
How would i check to see which it is??
Old 04-21-2005, 07:17 PM
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Visual inspection

Of the motor, not the monitor
Old 04-21-2005, 07:19 PM
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Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
You might see coolant leaking from the rear freeze plugs if you take the inspection cover off and look behind the flywheel/flexplate.

If it was a gasket, you'd be able to find coolant leaking from the top of the engine at the rear around where the heads, block and intake meet each other.
Old 04-21-2005, 08:38 PM
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Car: '88 T/A and '90 T/A
Engine: LB9/383
Transmission: T5/700R4
you can also get a test kit that contains chemicals that detect exhaust components in the coolant. This only works if the gasket is blown between a jacket and the chamber though. Drain the oil, if it's milky that will tell you too. Hard to believe it would be a freeze plug this time of year seeing as how it hasn't been that cold lately.
Old 04-21-2005, 08:39 PM
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Car: 1984 Z28 Hardtop
Engine: 383 Carb
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Axle/Gears: 3.54 Dana 44
Freeze plugs fail due to corrosion, not freezing. If the coolant froze there would be much bigger things to worry about.
Old 04-22-2005, 09:29 AM
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They'll also fail if it freezes. That type of failure is more common than just corrosion. It's rare that corrosion would eat all the way through a plug, and even if it's corroded around the perimeter of the plug something would have needed to cause it to shift before it starts leaking. Unless the cooling system was severely neglected.
Old 04-22-2005, 10:37 PM
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Car: 91 Camaro RS...GONE 87 SC (84 Z/28 clone)
Engine: 305 TBI LO3....GONE....305 TPI
Transmission: 700R4 with shift kit
Unless the cooling system was severely neglected.
This whole car has been severly neglected...the coolant system especially.... when the previous owner even bothered to put anything but water in it...it had Dex Cool coolant in it(which ive always heard will corrode system very badly...and it did to my dads S-10)...also has a radiator off a 6cyl Olds cutlass...so its a tad small and tends to boil alot (new radiator on the way)

being 17 & working at a McDonalds im not exactly raking in the bucks....but in about a year i HOPE to have a pretty bad 3rd gen

Thanks for the help guys
Old 04-23-2005, 03:20 AM
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Car: 1984 Z28 Hardtop
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Axle/Gears: 3.54 Dana 44
Coolant doesn't freeze unless it's severely neglected.
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