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07-05-2011, 01:27 PM
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#1 |
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Registered User
Join Date: Feb 2008
Location: Surprise, Ariz.
Posts: 186
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73gmc350- wiring
i installed a new battery and smoke was coming from the neg side. I don't why. I am trying to start with a remote hookup. Acutron. I have a metal grounding strap from the firewall connected to the valve cover. A 12 guage wire from engine block is connected to the same bolt on the frame where the NEG cable is connected. Is the 12 gauge thick enough for a ground? Please advise thanks
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07-05-2011, 04:03 PM
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#2 | |
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Moderator
 
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,977
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Re: 73gmc350- wiring
Quote:
Stock battery cables are 4ga. 12ga is WAY too small to run the starter. At the high amperage starter load the 12ga wire is acting like a big resistor. The stock neg cable goes to the engine. Move the neg battery cable back to the block or swap the 12ga frame to block wire out with a 2ga or 4ga wire... And move the firewall ground from the valve cover to a bellhousing bolt or some other solid connection. 
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07-05-2011, 04:05 PM
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#3 |
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Registered User
Join Date: Jun 2011
Location: Baytown TX
Posts: 2,219
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Re: 73gmc350- wiring
The ground strap should be bolted to the back of the head, not the valve cover.
It would help if you could give us some back ground on the truck and what you are doing. Posted via Mobile Device
__________________
John 82 Chevy Silverado 350ci/TH350 
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07-05-2011, 06:03 PM
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#4 |
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Registered User
Join Date: Feb 2008
Location: Surprise, Ariz.
Posts: 186
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Re: 73gmc350- wiring
j knight, am in process of rewiring the 73GMC truck with newer tech. wires. and a new fuse box with new fuses with spades. I recently upgraded the engine with new internal/external parts. I need to start the engine to check for any problems. I will follow the suggestions that were posted and take it from there. Thanks all for your help will let you know the results. 73oldie aka frankyjoet
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