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Re: '67 K10 swb big block "The Mutt"
Unfortunately I ignored everything Holley (and pretty much every person on every forum) said about needing to update the fuel system to something that is EFI friendly, specifically the gas tank. I know at least one member of this forum has successfully used the stock fuel tank with Holley EFI, but I think he had a small block that didn’t require the amount of fuel that my 454 wants.
Since the in-line pump that Holley provides is designed to push fuel rather than pull, it didn’t like having to draw fuel up and out of the stock fuel pickup tube. After about a half hour of highway driving the pump would get so hot that it would actually boil the fuel and lose prime, especially when the tank was more than half empty. After running it that way for a few hundred miles, the pump was obviously getting warn out (and LOUD!). It got to the point where the A/F ratio would lean way out even with moderate throttle application.
A lot of my weekend cruises were starting to end with my truck on a trailer...
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