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Author Topic: Anyone know what this is for?  (Read 2803 times)

Offline Grover 1

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Anyone know what this is for?
« on: June 19, 2011, 10:20:56 pm »
Here is a picture of a switch.  It is on the firewall of my 86 Silverado passenger side.  The vacuum line goes to a port on the carb.  Any idea what it switches? - Thanks guys.
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1978 C-10 SWB
1986 K-10 SWB
1975 C-10 SWB

And here I sit so patiently
Waiting to find out what price
You have to pay to get out of
Going through all these things twice - bd

Offline TexasRed

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Re: Anyone know what this is for?
« Reply #1 on: June 19, 2011, 11:16:20 pm »
Tip in switch for the distributor. Do you have the stock distributor or have you converted to an older style?
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Offline Grover 1

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Re: Anyone know what this is for?
« Reply #2 on: June 19, 2011, 11:54:28 pm »
I have the stock distributor.
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1978 C-10 SWB
1986 K-10 SWB
1975 C-10 SWB

And here I sit so patiently
Waiting to find out what price
You have to pay to get out of
Going through all these things twice - bd

Offline Grover 1

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  • Posts: 414
Re: Anyone know what this is for?
« Reply #3 on: June 20, 2011, 11:56:26 am »
So do I need this or is it a source for problems?  Do I need to  replace the distributor to eliminate it?
Logged
1978 C-10 SWB
1986 K-10 SWB
1975 C-10 SWB

And here I sit so patiently
Waiting to find out what price
You have to pay to get out of
Going through all these things twice - bd

Offline TexasRed

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  • Posts: 727
Re: Anyone know what this is for?
« Reply #4 on: June 20, 2011, 05:48:03 pm »
All the tip in switch does is retard your timing a bit on acceleration. If you haven't really noticed a problem, you're probably fine. You could either convert to an older style distributor or get a 4 pin module which eliminates the ESC.

Here's some more info:

http://www.73-87.com/7387garage/drivetrain/escrepl.htm
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