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#1 |
Registered User
Join Date: Oct 2008
Location: Birmingham, AL
Posts: 123
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67 Head Question
In this picture, what is this little plug on the head that the arrow is pointing to? I just got me a 67 head to go on my 81 and I don't know what it's for...I got the plug that came off of it but don't know what it goes to lol...any help?
![]() Last edited by hobsiscool; 01-13-2010 at 10:07 PM. |
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#2 |
Registered User
Join Date: Oct 2008
Location: Birmingham, AL
Posts: 123
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Re: 67 Head Question
Anyone?
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#3 |
Registered User
Join Date: Nov 2007
Location: Sask Canada
Posts: 1,666
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Re: 67 Head Question
it should be the electric water temp sender to a electric temp gauge
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Trueman |
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#4 |
Registered User
Join Date: Oct 2008
Location: Birmingham, AL
Posts: 123
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Re: 67 Head Question
Got ya...I was wondering why some folks had it hooked up and some didn't...guess I could replace that plug with a different probe...mechanical temp gauge perhaps?
**edit...guess I could just get another electrical water gauge huh...I see Autometer has a whole range of gauges... Last edited by hobsiscool; 01-13-2010 at 10:41 PM. |
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#5 |
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Join Date: Nov 2007
Location: Sask Canada
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Re: 67 Head Question
the hole should be 1/2 in.-14 Thd or 3/8 in.-18 Thd. most parts stores have the brass thread adaptors or there in the manual temp gauge packages.
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#6 |
Junior Member
Join Date: Oct 2006
Location: Lawrence, KS
Posts: 79
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Re: 67 Head Question
I don't believe that's for your temp gauge. It is a temp sender for the trans control spark system. It was an early emission control setup that affected spark advance. I'm no expert on it but I think it would kill vac advance unless the engine was in high gear or on cold starts (hence this sender)
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#7 | |
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Join Date: Nov 2007
Location: Sask Canada
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Re: 67 Head Question
Quote:
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Trueman |
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#8 |
Registered User
Join Date: Oct 2008
Location: Birmingham, AL
Posts: 123
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Re: 67 Head Question
So would I need to use it for a 3 speed manual from an 81? I've seen it hooked up and not hooked up on different setups.
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#9 |
Junior Member
Join Date: Oct 2006
Location: Lawrence, KS
Posts: 79
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Re: 67 Head Question
I'd just leave it plugged with the sending unit in the picture, or if it is missing find a plug to use. No need to use it on your 81 unless you want another gauge. There should be a gauge temp sender on the water neck under the thermostat.
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