TBI Trucks with Saddle Tanks Question

[TJBrown]

Afternoon everyone. I have a question. Its about the TBI trucks with Saddle Tanks. Did they have the EFI Fuel Pumps in the Tanks? If so, how did they go about switching the power to the fuel pumps when switching between tanks?

Thanks in advance

[rs72z]

Originally Posted by TJBrown

Afternoon everyone. I have a question. Its about the TBI trucks with Saddle Tanks. Did they have the EFI Fuel Pumps in the Tanks? If so, how did they go about switching the power to the fuel pumps when switching between tanks?

Thanks in advance

Yes they are in the tanks. They get power through the change over valve if i'm not mistaken.

[79k30dually]

I installed a 454 tbi engine in my 79 dually, There are pumps in both tanks. The change over valve and switch are different from the carb'd version. You can order the parts for a 87-91 R/V truck. Good luck, Ron

[black_sheep454]

Originally Posted by 79k30dually

I installed a 454 tbi engine in my 79 dually, There are pumps in both tanks. The change over valve and switch are different from the carb'd version. You can order the parts for a 87-91 R/V truck. Good luck, Ron

This, but it is best to order for an 87 because if your trucks an 88 like mine and you try to order parts most parts stores will order for the 88-98 because they don't know a 88 crew cab is a square body.
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[79k30dually]

I ordered everything for a 91 R30 dually with a 454 TBI and a 465/205 and 3.73 gears, including the prom for the computer. I also replaced the fuel tank sending units. Ron