radiator petcock on 85 z28 305 TPI

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duckman - 04 Apr 2006 18:52 GMT

Anyone know where the petcock is located? it is normally on the lower
passenger side of the radiator.

looks like there is a plug on the side about 2" up....is that it?

Thanks

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KITTvsKARR - 04 Apr 2006 23:47 GMT

My 85 Camaro's is where it "normally" is on the lower rear pass side... so
I am not sure if the Z-28 has an upgraded one?

-Geno
1985 Camaro
1988 Firebird Formula (www.formulaproject.com)
1985 Firebird

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Z28 - 18 Apr 2006 14:15 GMT

I just drained my 1985 Z-28 305 4bbl radiator yesterday. It is located on
the lower passenger side. It is not a metal petcock but a plastic thumb type
screw. Get it loose then pull on it until the water starts to drain. It just
has a flat tab that you turn with your fingers. Although I had to use some
pliers to get mine loose. I think you found it anyway.

BTW, since you have the same year and engine, what is your timing settings
supposed to be. TDC or how many degree's advance? My sticker is missing.

> Anyone know where the petcock is located? it is normally on the lower
> passenger side of the radiator.
>
> looks like there is a plug on the side about 2" up....is that it?
>
> Thanks

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Z28 - 18 Apr 2006 14:19 GMT

Whoops, I just noticed you said you have a TPI which may have a different
timing setting than my 4 bbl. If you don't mind can you tell me what your is
supposed to be anyway.

>I just drained my 1985 Z-28 305 4bbl radiator yesterday. It is located on
>the lower passenger side. It is not a metal petcock but a plastic thumb
[quoted text clipped - 11 lines]
>>
>> Thanks

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