Author Topic: TBI fuel tank:  (Read 1798 times)

Offline Stewart G Griffin

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TBI fuel tank:
« on: September 25, 2020, 07:50:43 AM »
i know this has probably been asked before, but i don't have time to do a thorough search.   Could probably do one tonight though.

Is there an aftermarket equivalent to the TBI fuel tank?   i assume you can't buy them new from GM anymore?


What fuel pump (model #) was used  in the TBI system?


 

Offline ehjorten

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Re: TBI fuel tank:
« Reply #1 on: September 25, 2020, 08:52:39 AM »
Yes aftermarket tanks are offered for our trucks. The stock fuel pump is part of the fuel sender unit, or you can buy the pump separately. You can even fit a higher pressure pump directly to these units to feed a modern fuel injection engine with only minor modifications.
-Erik-
1991 V3500 - Gen V TBI 454, 4L80E, NP205, 14 bolt FF, D60, 8" Lift on 35s
1977 K20 Silverado - 350, THM350, NP203, 14 bolt FF, D44, Stock Lift on 31s
1969 Chevelle Malibu Sport Coupe - EFI350, THM350
1968 Chevrolet Step-side Pickup - 300HP L6

Offline Mike81K10

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Re: TBI fuel tank:
« Reply #2 on: September 25, 2020, 12:44:15 PM »
One popular place for tanks and fuel system parts is Tanks Inc. There are other places as well.

https://www.tanksinc.com/index.cfm
"Tell me and I forget. Teach me and I remember. Involve me and I learn." -Benjamin Franklin

Offline Stewart G Griffin

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Re: TBI fuel tank:
« Reply #3 on: September 27, 2020, 09:48:53 AM »
Alright thanks.

Now, it appears that almost any in-tank type pump  can "fit" in the sending module?   The pump appears that it is secured by two zip ties  (i hope not?)?

Offline ehjorten

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Re: TBI fuel tank:
« Reply #4 on: September 29, 2020, 09:18:11 AM »
The fuel pump is supported by a bracket on the bottom of the sending unit and secured at the top by the short section of fuel hose that goes between the pump and the outlet tube of the sending unit. It is very secure.

Stock fuel pump I think is an AC Delco EP 386 and for later model engines with 60 psi you can use an EP 381. The bottom of these pumps have a couple plastic ears that interfere with the stock sending unit bracket at the bottom. You can either break off those ears, or modify the metal bracket to fit the pump.
-Erik-
1991 V3500 - Gen V TBI 454, 4L80E, NP205, 14 bolt FF, D60, 8" Lift on 35s
1977 K20 Silverado - 350, THM350, NP203, 14 bolt FF, D44, Stock Lift on 31s
1969 Chevelle Malibu Sport Coupe - EFI350, THM350
1968 Chevrolet Step-side Pickup - 300HP L6