Fuel injected gas tanks vs. no FI - The 1947 - Present Chevrolet & GMC Truck Message Board Network

kevinr1970 · 01-21-2006, 06:58 PM

I have this '87 lwb parts truck with a TBI 305, 700 r4.
The body and interior are pretty beat up. Both gas tanks leak pretty badly. Looks like they rusted out due to accumulated junk between the tank and the plastic covers that go underneath them.
My original plan was to put this engine/tranny in my '82 2wd Blazer.
My questions are this:
I found a guy parting a '83 (I think) diesel Blazer and was wondering if this tank would work for fuel injected gas? If I got the fuel tank and fuel lines would I need anything else off of the Blazer or would I have the rest of the parts in the truck?
Or:
Another guy is parting an '82 (I think) GMC lwb diesel. I have the front end parts to fix the '87, but the bed is trashed on the driver side. This GMC has a decent bed. Would the diesel tanks on the truck swap right into the '87 truck?

Can't tell in the pictures but the bed is pretty bent up behind the bumper and in front of the rear wheel.

ElGracho · 01-21-2006, 11:07 PM

The EFI tanks have a sump pan built into them. It is fully contained in the tank and doesn't hang below like some aftermarket tanks with sumps. Anyhow, this sump keeps the in-tank fuel pump covered with fuel when cornering etc. That will keep the pump from wearing out prematurely due to the lack of cooling it normally gets from being covered with fuel. Others have said they ran efi without the 87 and up gas tanks, but I figure GM changed them for a reason...

kevinr1970 · 01-22-2006, 07:30 PM

So any idea if the diesel tank is the same as a FI gas tank?
I know the diesel is injected but was wondering if the pumps are different?

ElGracho · 01-23-2006, 08:52 AM

The diesel tanks are just like the NON-injected gasoline tanks. I'd get a tank and sending unit from a 87-91 blazer or just buy a new one.

01-21-2006, 06:58 PM	#1
kevinr1970 Senior Member Join Date: Aug 2004 Location: Everett, WA Posts: 2,316	Fuel injected gas tanks vs. no FI I have this '87 lwb parts truck with a TBI 305, 700 r4. The body and interior are pretty beat up. Both gas tanks leak pretty badly. Looks like they rusted out due to accumulated junk between the tank and the plastic covers that go underneath them. My original plan was to put this engine/tranny in my '82 2wd Blazer. My questions are this: I found a guy parting a '83 (I think) diesel Blazer and was wondering if this tank would work for fuel injected gas? If I got the fuel tank and fuel lines would I need anything else off of the Blazer or would I have the rest of the parts in the truck? Or: Another guy is parting an '82 (I think) GMC lwb diesel. I have the front end parts to fix the '87, but the bed is trashed on the driver side. This GMC has a decent bed. Would the diesel tanks on the truck swap right into the '87 truck? Can't tell in the pictures but the bed is pretty bent up behind the bumper and in front of the rear wheel. __________________ 2009 Honda Fit CfC (bsf 44.9 mpg) 2000 Tahoe Limited 1991 GMC CrewCab Dually 2wd, will end up swb, not dually and replace CCswb below 1991 GMC CrewCab Dually 4x4, just going to fix things up for now 1982/1989 K5/GMC Jimmy 2wd 1987 GMC 1/2 ton swb 2wd Crew (sold) Last edited by kevinr1970; 10-04-2007 at 11:39 PM.

01-21-2006, 11:07 PM	#2
ElGracho Gentleman Jim Driver Join Date: Nov 2002 Location: Poulsbo, WA Posts: 1,550	Re: Fuel injected gas tanks vs. no FI The EFI tanks have a sump pan built into them. It is fully contained in the tank and doesn't hang below like some aftermarket tanks with sumps. Anyhow, this sump keeps the in-tank fuel pump covered with fuel when cornering etc. That will keep the pump from wearing out prematurely due to the lack of cooling it normally gets from being covered with fuel. Others have said they ran efi without the 87 and up gas tanks, but I figure GM changed them for a reason... __________________ Joe '75 GMC Gentleman Jim '84 Chev C10 Short Wide - Super duper plain (manual steering, manual brakes, no dome light, no cig lighter) '85 Chev C10 Short Wide - Super plain Vortec 4.8 4L60E trans also: '81 K30, '83 C30 Crew Dually, '84 M1028 CUCV, '85 M1009 CUCV, another '85 C10 SWB, '89 R3500 Flatbed Last edited by ElGracho; 01-21-2006 at 11:08 PM.

01-22-2006, 07:30 PM	#3
kevinr1970 Senior Member Join Date: Aug 2004 Location: Everett, WA Posts: 2,316	Re: Fuel injected gas tanks vs. no FI So any idea if the diesel tank is the same as a FI gas tank? I know the diesel is injected but was wondering if the pumps are different? __________________ 2009 Honda Fit CfC (bsf 44.9 mpg) 2000 Tahoe Limited 1991 GMC CrewCab Dually 2wd, will end up swb, not dually and replace CCswb below 1991 GMC CrewCab Dually 4x4, just going to fix things up for now 1982/1989 K5/GMC Jimmy 2wd 1987 GMC 1/2 ton swb 2wd Crew (sold)

01-23-2006, 08:52 AM	#4
ElGracho Gentleman Jim Driver Join Date: Nov 2002 Location: Poulsbo, WA Posts: 1,550	Re: Fuel injected gas tanks vs. no FI The diesel tanks are just like the NON-injected gasoline tanks. I'd get a tank and sending unit from a 87-91 blazer or just buy a new one. __________________ Joe '75 GMC Gentleman Jim '84 Chev C10 Short Wide - Super duper plain (manual steering, manual brakes, no dome light, no cig lighter) '85 Chev C10 Short Wide - Super plain Vortec 4.8 4L60E trans also: '81 K30, '83 C30 Crew Dually, '84 M1028 CUCV, '85 M1009 CUCV, another '85 C10 SWB, '89 R3500 Flatbed



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