350 stops for no apparent reason - Team Camaro Tech
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post #1 of 7 (permalink) Old Nov 19th, 14, 10:11 AM Thread Starter
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Dennis
 
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350 stops for no apparent reason

OK guys, this is a hard one to understand. I just finished rebuilding a 350 700010 block and left it mainly stock. It is backed up by a Munsie 4 speed and everything seems to work smoothly. The problem I'm having is after about 8 miles the engine shuts off and wont start for about 15 minutes. I have taken the same rout twice and it has shut off at the same location almost to the foot.

I'm happy with the way it runs and shifts but this one has me scratching my head. Does anyone have any idea?
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post #2 of 7 (permalink) Old Nov 19th, 14, 10:12 AM
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George
 
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Re: 350 stops for no apparent reason

What kind of ignition do you have? HEI? Stock?

Sold:
1968 Base hardtop 250 with a P̶G̶ built 2004r
Offy intake
Holley 390 CFM carb
Langdon split header to a 2.5" exhaust
Mild cam
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post #3 of 7 (permalink) Old Nov 19th, 14, 10:27 AM Thread Starter
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Dennis
 
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Re: 350 stops for no apparent reason

It has HEI.
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post #4 of 7 (permalink) Old Nov 19th, 14, 10:32 AM
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George
 
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Re: 350 stops for no apparent reason

When you wired it up did you replace the resistance wire from the firewall to the distributor? It's a (I believe) pink wire that goes from the firewall to the distributor to power it. Originally it went to the coil. This wire increases in resistance as it heats up and lowers the voltage to the coil to protect the points after warm up. You need to replace it with an appropriately sized non-resistance wire when going to HEI.

Sold:
1968 Base hardtop 250 with a P̶G̶ built 2004r
Offy intake
Holley 390 CFM carb
Langdon split header to a 2.5" exhaust
Mild cam
Custom interior
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post #5 of 7 (permalink) Old Nov 19th, 14, 10:57 AM Thread Starter
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Dennis
 
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Re: 350 stops for no apparent reason

There is a red and white wire in the same plug that goes to the Dist. and another brown wire with its own plug for the tach. next to that one. There is a third plug that is closer to the cap under the other two and wider but I don't know the colors. Which one of the 3 plugs do you think it will be? Thanks for all the help.
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post #6 of 7 (permalink) Old Nov 19th, 14, 03:53 PM Thread Starter
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Dennis
 
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Re: 350 stops for no apparent reason

The red and white wires I had mentioned before are really pink and yellow. The pink wire is thicker than the yellow one so has it already been replaced or should I go ahead and replace it?
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post #7 of 7 (permalink) Old Nov 19th, 14, 07:15 PM
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jared
 
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Re: 350 stops for no apparent reason

You need a full 12 volts from a keyed source.
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