TBI fuel pump?

[Critter]

I quoted this from the main "they gave it to us thread" but I separated it to a new thread (obviously).

Originally Posted by glock35ipsc

You have three choices.... well, maybe more, but these are what come to mind.....

* Use the stock in-cab tank with an external pump. You will need to install a return line back into the tank.

* Use an 87-91 Blazer or Surburban tank that mounts behind the rear axle between the frame. These were TBI trucks and already have the fuel pump in-tank, so you can use an inexpensive OEM pump.

* Use a custom made aluminum tank with an in-tank pump.

Ok, I have a question. I have a 72 Blazer with a 73+ fuel tank and I have thought about the 87-91 TBI in-tank pump. I was under the impression that the TBI systems worked at around 30 psi, not 60 psi like the LSx engine requires. Am I missing something???