Fuel System Questions - TBI Swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

nico · 03-31-2009, 10:15 AM

I about to start on a TBI retrofit into my second 1984 SWB and have bought a 1988 Suburban with a solid TBI 350/700R4 drivetrain.

I understand the wiring issues, but am unclear on the fuel system, and have a few questions for those who have done this swap before...

Can I use my 1984's single tank with a 1987 truck sending unit/pump or should I buy a complete 1987 tank and pump?

Is it possible to use the Suburban's pump and sending unit in the smaller truck tank?

What is the best way to do fuel lines? Can any of the 1984's system be used or should I purchase new 1987 SWB hard lines?

Thanks.

impalamark · 03-31-2009, 12:30 PM

I did the same swap and was able to modify the pump/pickup from the burb to fit in my p/u the burb set up is too tall/long to fit and I cut it down to fit .so far so good

nico · 03-31-2009, 01:04 PM

Thanks, that's what I was thinking about doing... How did you shorten it?

03-31-2009, 10:15 AM	#1
nico Registered User Join Date: Nov 2006 Location: Marietta, OK Posts: 153	Fuel System Questions - TBI Swap I about to start on a TBI retrofit into my second 1984 SWB and have bought a 1988 Suburban with a solid TBI 350/700R4 drivetrain. I understand the wiring issues, but am unclear on the fuel system, and have a few questions for those who have done this swap before... Can I use my 1984's single tank with a 1987 truck sending unit/pump or should I buy a complete 1987 tank and pump? Is it possible to use the Suburban's pump and sending unit in the smaller truck tank? What is the best way to do fuel lines? Can any of the 1984's system be used or should I purchase new 1987 SWB hard lines? Thanks.

03-31-2009, 12:30 PM	#2
impalamark Registered User Join Date: Feb 2008 Location: cocoa florida Posts: 183	Re: Fuel System Questions - TBI Swap I did the same swap and was able to modify the pump/pickup from the burb to fit in my p/u the burb set up is too tall/long to fit and I cut it down to fit .so far so good __________________ the avatar was my 62 I owned for 27 years 84 chevy short short bed black 84 gmc long bed copper/ buckskin 88 chevy k5 blazer white Life's short make the most of it Mark aka impalmark Last edited by impalamark; 03-31-2009 at 12:31 PM.

03-31-2009, 01:04 PM	#3
nico Registered User Join Date: Nov 2006 Location: Marietta, OK Posts: 153	Re: Fuel System Questions - TBI Swap Thanks, that's what I was thinking about doing... How did you shorten it?



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