The LM7 came with this ground wire at the left back of the engine block. Any body knows where to install it? Is the factory LH8 fitted with this wire. Thanks for help
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Correct, one of GM tricks to improve spark. You may want to ground both heads.It is a LM7 from a 2005 silverado according to the seller. On those trucks, this wire is connected to the firewall.
cart7881, may I see some pics of the 2 grounds on the left of the block, thanks in advance?