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1971 Other Pontiac Models Freeze plug

Tiny
GPSJ71
  • MEMBER
  • 1971 PONTIAC
  • V8
  • 2WD
  • AUTOMATIC
  • 11,100 MILES
My 1971 Pontiac Grand Prix with 111,000 miles has a bad freeze plug that needs to be replaced. My question is do I replace all the freeze plugs or just the one that is leaking? Is this going to be a costly repair?
Sunday, December 9th, 2007 AT 12:37 AM

3 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Costly? Depends which one leaks, the ones on the side of the engine, if they are easy to get at won't be bad, the ones in the back and in the heads are tough and may require engine removal. Yes costly!
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Sunday, December 9th, 2007 AT 8:17 AM
Tiny
GPSJ71
  • MEMBER
  • 2 POSTS
The bad plug is on the right side of the engine and its either the middle or rear. I'm wondering if I should just fix the one that is leaking or the plugs on the sides. I would imagine the plugs on the ends of the block are fine.
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Sunday, December 9th, 2007 AT 8:03 PM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
If were my car I would do the ones I could get at.
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Monday, December 10th, 2007 AT 2:35 AM

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