Will 20 gallon sender work in 16 gallon tank. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**rs74** · 03-12-2013, 11:26 PM

I am going to have to buy new tanks after I shorten the frame on my K10. Can I keep the old sending unit from the 20g tank? I will need to see what shape they are in but if they are good then it would be nice to use them instead of buyng new.

BLE 'BURBAN · 03-13-2013, 02:44 AM

Yes.
THe tanks depths are identical. The 16g is just shorter than the 20g tank

*mrhino* · 03-13-2013, 07:33 AM

agreed!

**rs74** · 03-13-2013, 08:44 AM

Quote:

Originally Posted by BLE 'BURBAN

Yes.
THe tanks depths are identical. The 16g is just shorter than the 20g tank

That was my perception but I wanted to make sure. Thanks.

bohmankid · 03-13-2013, 01:12 PM

While on the subject, would a 20 gallon sender work in a 31 gallon suburban tank??

83GMCK2500 · 03-13-2013, 01:35 PM

Quote:

Originally Posted by bohmankid

While on the subject, would a 20 gallon sender work in a 31 gallon suburban tank??

The fill neck vent line for a 'burban tank is part of the sending unit, waaay different from truck style. Plus, rest of the tubes are facing different directions.

bohmankid · 03-13-2013, 03:01 PM

Quote:

Originally Posted by 83GMCK2500

The fill neck vent line for a 'burban tank is part of the sending unit, waaay different from truck style. Plus, rest of the tubes are facing different directions.

I see, thank you. Is there a difference in sending units for the pre 86 sending units and the 87-91? I know the tanks are different. I'm going to be using a baffled tank for my 5.3 swap.

83GMCK2500 · 03-13-2013, 03:07 PM

Quote:

Originally Posted by bohmankid

I see, thank you. Is there a difference in sending units for the pre 86 sending units and the 87-91? I know the tanks are different. I'm going to be using a baffled tank for my 5.3 swap.

Yes. 87+ units have an electric fuel pump on them for the TBI engines.

Tank openings are all the same, so you *could* technically put an 87+ sending unit/pump into an older tank, but it wouldn't have the baffles. Baffled would be my choice though.

bohmankid · 03-13-2013, 03:23 PM

Quote:

Originally Posted by 83GMCK2500

Yes. 87+ units have an electric fuel pump on them for the TBI engines.

Tank openings are all the same, so you *could* technically put an 87+ sending unit/pump into an older tank, but it wouldn't have the baffles. Baffled would be my choice though.

Thanks for the info. after a little research it looks like I'll be buying the 4 tube sending unit for the 87-91 burbans. something like this or this. I'm replacing my fuel pump as well with a high pressure pump for my swap.

83GMCK2500 · 03-13-2013, 03:25 PM

Quote:

Originally Posted by bohmankid

Thanks for the info. after a little research it looks like I'll be buying the 4 tube sending unit for the 87-91 burbans. something like this or this. I'm replacing my fuel pump as well with a high pressure pump for my swap.

No problemo. I have an LQ4 on a stand for my truck, one of these days (years), so I've looked into what I need as well.

kevinr1970 · 03-15-2013, 10:48 PM

I installed 16 gallon tanks when I converted my CC to a short bed and did nothing else. Everthing works just fine.

On a seperate, but maybe related note, I would like to do a Suburban tank and move my gas door to the Suburban location on my CC.
Any reason this wouldn't work?
I have a parts Suburban with all the parts.

Tired of having to move the truck if I want to fill both tanks!

03-12-2013, 11:26 PM	#1
rs74 Senior Member Join Date: Jun 2010 Location: Illinois Posts: 2,957	Will 20 gallon sender work in 16 gallon tank. I am going to have to buy new tanks after I shorten the frame on my K10. Can I keep the old sending unit from the 20g tank? I will need to see what shape they are in but if they are good then it would be nice to use them instead of buyng new. __________________ Roy 85 Short Bed Silverado- Work in progress. http://67-72chevytrucks.com/vboard/s...d.php?t=564818 1987 R10 shortie

03-13-2013, 02:44 AM	#2
BLE 'BURBAN In the Forgotten far North. Join Date: Jul 2007 Location: Anchorage, Alaska Posts: 2,627	Re: Will 20 gallon sender work in 16 gallon tank. Yes. THe tanks depths are identical. The 16g is just shorter than the 20g tank __________________ 1987 R3500 CREW CAB DUALLY (BIG RED)Acquired 06/12/2015 1990 chevy suburban V2500 5.7L My cluster Mods-Nov 2007 overhead console Stereo install Round 2 Aug 2009 Heated/turn signal mirror upgrade

03-13-2013, 07:33 AM	#3
mrhino Account Suspended Join Date: Aug 2007 Location: USA Posts: 1,223	Re: Will 20 gallon sender work in 16 gallon tank. agreed!

03-13-2013, 01:12 PM	#5
bohmankid Registered User Join Date: Nov 2012 Location: Salt Lake City, UT Posts: 520	Re: Will 20 gallon sender work in 16 gallon tank. While on the subject, would a 20 gallon sender work in a 31 gallon suburban tank?? __________________ My 1985 GMC 4x4 LS swap build thread R.I.P. My 1978 Big Ten, Big Block build thread Moby: My Chevy 4x4 ls swap build thread

03-15-2013, 10:48 PM	#11
kevinr1970 Senior Member Join Date: Aug 2004 Location: Everett, WA Posts: 2,316	Re: Will 20 gallon sender work in 16 gallon tank. I installed 16 gallon tanks when I converted my CC to a short bed and did nothing else. Everthing works just fine. On a seperate, but maybe related note, I would like to do a Suburban tank and move my gas door to the Suburban location on my CC. Any reason this wouldn't work? I have a parts Suburban with all the parts. Tired of having to move the truck if I want to fill both tanks! __________________ 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)

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