Fuel tank and sender differences - The 1947 - Present Chevrolet & GMC Truck Message Board Network

cochino12 · 12-30-2008, 02:04 PM

Lmc lists different tanks for 73-81 and 81-86 trucks, does anybody know that makes them different? or is the sender that is used that makes them diffrent? and is it possible to use the later style on a older truck and visa versa?

ont_guy_38 · 12-30-2008, 02:14 PM

I could very well be wrong but I think the fuel inlet are different sizes

cochino12 · 12-30-2008, 06:41 PM

Quote:

Originally Posted by ont_guy_38

I could very well be wrong but I think the fuel inlet are different sizes

If thats all it should be fairly easy to swap years right?

87Bob · 12-30-2008, 08:19 PM

It's probably a E.P.A. smog rule change that took effect.

cochino12 · 12-31-2008, 11:55 AM

Anyone else?

72gmcworker · 12-31-2008, 12:12 PM

For the tank as said the inlet is different and for EFI trucks the tank has a pan in it under the sender/fuel pump. Sender hole in tank is all the same through the years.
I would stick with proper years unless your changing from carb to EFI or in-tank fuel pump.

Use OEM O-ring on any replacement Sender units...they actually fit

ont_guy_38 · 12-31-2008, 12:26 PM

Found this to confirm about the inlets other then that they are the exact same tank

GAS TANK 16 U.S. GAL. SHORT WB W/ SMALL NECK (CAN BE USED W/ DUAL TANKS) CHEVY/GMC P/U 73-81

GAS TANK 16 U.S. GAL. SHORT WB W/ LARGE NECK CHEVY/GMC P/U W/ SINGLE TANK 82-87; W/ DUAL TANKS 82-86

sorry about the caps I just copied it and pasted out of an online catalogue

rfmaster · 01-01-2009, 05:17 AM

20 Gallon Tanks

73-81
C/K Pickup; 20 Gal. DIM 56" x 14" x 11"; "SMALL FILLER PIPE 1-1/4" I.D."
Mfg: Spectra Premium; Mfg Part Num:GM1A; Hollander# HOL# 197-982

82-86
C/K Pickup; 20 Gal. DIM 56" x 14" x 11"; "LARGE FILLER PIPE 1-5/8" I.D.";NON EFI
Mfg: Spectra Premium; Mfg Part Num:GM1B; Holander Hol# 197-1329A/B

87-91
C/K Pickup; 20 Gal. DIM 56" x 14" x 11"; "LARGE FILLER PIPE 1-5/8" I.D.";EFI, with baffle
Mfg: Spectra Premium; Mfg Part Num:GM1C; Holander Hol #197-1417

Will Fit Various GM Applications (see lookup for exact application)

Happy New Year

//RF

12-30-2008, 02:14 PM	#2
ont_guy_38 Registered User Join Date: Jul 2007 Location: Ontario Canada Posts: 1,006	Re: Fuel tank and sender differences I could very well be wrong but I think the fuel inlet are different sizes

12-30-2008, 08:19 PM	#4
87Bob Registered User Join Date: Nov 2007 Location: Franklin Indiana Posts: 635	Re: Fuel tank and sender differences It's probably a E.P.A. smog rule change that took effect. __________________ My Truck's not leaking its marking its territory!

12-31-2008, 11:55 AM	#5
cochino12 It followed me home? Join Date: Mar 2003 Location: Yup Posts: 5,751	Re: Fuel tank and sender differences Anyone else? __________________ Adam That's why they call it a shortcut Kyle, if it was easy it would just be the way. 86 c-10 SWB 85 CCSB 90 GMC K30 Crew SRW 1985 C30 Dually

12-31-2008, 12:12 PM	#6
72gmcworker Registered User Join Date: May 2006 Location: North x Northwest BC Posts: 62	Re: Fuel tank and sender differences For the tank as said the inlet is different and for EFI trucks the tank has a pan in it under the sender/fuel pump. Sender hole in tank is all the same through the years. I would stick with proper years unless your changing from carb to EFI or in-tank fuel pump. Use OEM O-ring on any replacement Sender units...they actually fit __________________ '70 Pontiac Firebird Esprit '72 GMC 2500 '90 GMC V1500 '94 Dodge Cummins 2500 '02 Dodge 2500 Quad Cab Long Box 4x4 gasser

12-31-2008, 12:26 PM	#7
ont_guy_38 Registered User Join Date: Jul 2007 Location: Ontario Canada Posts: 1,006	Re: Fuel tank and sender differences Found this to confirm about the inlets other then that they are the exact same tank GAS TANK 16 U.S. GAL. SHORT WB W/ SMALL NECK (CAN BE USED W/ DUAL TANKS) CHEVY/GMC P/U 73-81 GAS TANK 16 U.S. GAL. SHORT WB W/ LARGE NECK CHEVY/GMC P/U W/ SINGLE TANK 82-87; W/ DUAL TANKS 82-86 sorry about the caps I just copied it and pasted out of an online catalogue

12-30-2008, 02:04 PM	#1
cochino12 It followed me home? Join Date: Mar 2003 Location: Yup Posts: 5,751	Fuel tank and sender differences Lmc lists different tanks for 73-81 and 81-86 trucks, does anybody know that makes them different? or is the sender that is used that makes them diffrent? and is it possible to use the later style on a older truck and visa versa? __________________ Adam That's why they call it a shortcut Kyle, if it was easy it would just be the way. 86 c-10 SWB 85 CCSB 90 GMC K30 Crew SRW 1985 C30 Dually Last edited by cochino12; 12-30-2008 at 02:04 PM.

01-01-2009, 05:17 AM	#8
rfmaster Registered User Join Date: Oct 2003 Location: OC CA Posts: 1,374	Re: Fuel tank and sender differences 20 Gallon Tanks 73-81 C/K Pickup; 20 Gal. DIM 56" x 14" x 11"; "SMALL FILLER PIPE 1-1/4" I.D." Mfg: Spectra Premium; Mfg Part Num:GM1A; Hollander# HOL# 197-982 82-86 C/K Pickup; 20 Gal. DIM 56" x 14" x 11"; "LARGE FILLER PIPE 1-5/8" I.D.";NON EFI Mfg: Spectra Premium; Mfg Part Num:GM1B; Holander Hol# 197-1329A/B 87-91 C/K Pickup; 20 Gal. DIM 56" x 14" x 11"; "LARGE FILLER PIPE 1-5/8" I.D.";EFI, with baffle Mfg: Spectra Premium; Mfg Part Num:GM1C; Holander Hol #197-1417 Will Fit Various GM Applications (see lookup for exact application) Happy New Year //RF __________________ "The Beast" 1975 Chevrolet C20 longbed 350/700R4! with 3inch body lift Dual Flowmasters Super 40's! TBI retrofit completed (2007-07-29) New 383CID (+030) 08-304-8 9.5:1CR x36,005 (2012-12-17)



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