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Old 08-30-2022, 08:24 PM   #25
barraza
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Join Date: Jul 2003
Location: N. Alabama
Posts: 131
Re: Swapping L86 6.2 8l90e into 72 k10

Sorry, I haven’t check in for a while.

Regarding the fuel system: I used a tank and fuel pump from a 96 impala ss.

One of the goals of the whole effort was to to make this truck effortless, ie worry-free. The impala/caprice tank fits up into the frame where the spare was, and the filler neck was extended to poke out at the rear corner of the bed.


I did this for a couple of reasons. First, gasoline is crap now. You never know when you are getting ethanol. Second, i am using a stock impala ss fuel pump with its corresponding reliability.

The impala pump is inside a baffled section of the tank, is submerged, and is quiet. The tank is plastic, the lines are plastic, and they connect to the stainless lines that came with my engine. The fuel gauge works like normal.

There was a very minor amount of trimming of the frame required, 1/4” maybe??

The LT direct injection engines have a high pressure pump inside the engine, and apparently only need a steady supply of fuel at a reasonable pressure to work fine. I used a pressure regulator / return that is commonly used on LS swaps and is generically know as the corvette regulator. It’s off of
C5 vettes.

Everything works flawlessly
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