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Old 05-19-2021, 09:28 AM
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importsmasher importsmasher is offline
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Default Cylinder head freeze plug size

I am in need of the freeze plugs that go in the cylinder heads at the rear behind the intake (where the heater hose nipple goes on the passenger side). I have been unable to definitively figure out what size they are. I tried Google, and for some reason the search function on this site won't work on my phone. Anyone know?

Thanks,
Importsmasher

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66 GTO convertible 389/4 speed (parents bought new)
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Old 05-19-2021, 11:07 AM
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Dorman 555-021. 1 3/16"

https://www.dormanproducts.com/p-11831-555-021.aspx

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  #3  
Old 05-19-2021, 12:36 PM
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Quote:
Originally Posted by importsmasher View Post
I am in need of the freeze plugs that go in the cylinder heads at the rear behind the intake (where the heater hose nipple goes on the passenger side). I have been unable to definitively figure out what size they are. I tried Google, and for some reason the search function on this site won't work on my phone. Anyone know?

Thanks,
Importsmasher
Another rear of head freeze plug leaker.
More common than you would think and few have their heads pressure checked before installation.

Tom V.

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Old 05-19-2021, 12:47 PM
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Another rear of head freeze plug leaker.
More common than you would think and few have their heads pressure checked before installation.

Tom V.
Not the rear of the head, this is on the intake surface at the back. The heater hose nipple was damaged, and since the car has no heater, I figured I'd throw a freeze plug in it.

Importsmasher

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Scott Baggiore

66 GTO convertible 389/4 speed (parents bought new)
73 Firebird Formula 400/4 speed
74 GTO 455/4 speed
74 Grand Am
  #5  
Old 05-19-2021, 08:53 PM
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Got It, then that will be a easy task. That reminds me, I will need to do the same thing on a set of 1st gen E-Heads as
I have had the heads since 1996 and never thought about removing the nipple. The heater delete stuff came about in the 2002-2003 time frame. Thanks.

Tom V.

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Old 05-19-2021, 09:03 PM
t money t money is offline
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Pioneer #PC134 1 13/64 it a deep freeze plug Have some 2 dollars ea plus shipping. I purchased a box of 10. Have a couple left.

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Old 05-30-2021, 04:00 PM
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Pioneer #PC134 1 13/64 it a deep freeze plug Have some 2 dollars ea plus shipping. I purchased a box of 10. Have a couple left.
How much for 2 shipped to 38375?

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66 GTO convertible 389/4 speed (parents bought new)
73 Firebird Formula 400/4 speed
74 GTO 455/4 speed
74 Grand Am
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