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Stock C10 tank w/ efi
I installed a '94 LT1 EFI 350 into my '71 shortbed. I'm using the stock behind the seat fuel tank w/eec. I'm running and external FI pump. I've plumbed the pressure side from the stock (single line) sending unit, and the low pressure return through the passenger side/top tank tube. I'm wondering if my vented gas cap is "breathing" enough. Sometimes the truck will rpm surge & sometimes even die, making me wonder if it's vapor locking.
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