[Icebox240z]

Recently had similar electrical gremlins pop up in my '72 K20. Long story short (for once)...I just got a couple new grounds made up out of fine strand copper core welding cable, 1ga. for front of block to frame, and 4ga. for back of block to body/firewall (to replace the old copper braided strap from rear valve cover bolt). My chevy buddy pointed out that my motor has aluminum valve covers and the grouns through just the steel bolt to the head probably isnt best and that there might be a better spot on the back of the block. Anyone familiar with any good alternative locations? The attached pic shows the two new grounds at top, old braided copper in middle, two off the shelf new braided cables that'd i had considered using.