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06-25-2015, 01:54 PM
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#1 |
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Registered User
Join Date: Oct 2011
Location: Plumas Lake, CA
Posts: 386
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16 to 20 gallon tanks
Is installing a 20 gallon tank a simple matter of swapping the tank? Id assume the fuel sender/pickup is the same.
This would be on my long bed pickup |
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06-25-2015, 02:39 PM
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#2 |
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Registered User
Join Date: Apr 2012
Location: Chatt Tn
Posts: 965
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Re: 16 to 20 gallon tanks
far as I know it bolts right in.
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88 military v30 crewcab shortbed 5.9 cummins, nv4500, 205 86 k30, 89 diesel burb, 76 gmc pathfinder 71 longbed 5.3 4l80 http://67-72chevytrucks.com/vboard/s...d.php?t=522535 |
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06-25-2015, 03:13 PM
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#3 |
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Moderator
 
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,932
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Re: 16 to 20 gallon tanks
The Sender is the same and the straps and brackets are the same.
I replaced my leaky 16 gallon tank with a 20 gallon unit on my long bed 1985 C10. The only thing I changed, besides the tank, was the rotted out straps and brackets.
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1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. |
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06-25-2015, 03:27 PM
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#4 |
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Registered User
Join Date: Apr 2014
Location: Bloomington Indiana
Posts: 1,041
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Re: 16 to 20 gallon tanks
Are the hoses the same? There's some controversy about that on another forum. Suppliers only list one filler neck hose and one vent hose.
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Rich Weyand 1978 K10 RCSB DD. |
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06-25-2015, 03:46 PM
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#5 |
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Moderator
Join Date: Oct 2008
Location: Wentworth, NH
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Re: 16 to 20 gallon tanks
The filler hoses differ between 1973-81 and 1982-1991. You have to be careful of this when you start mixing beds. The 82+ beds will fit the 73-81 frames but the filler hoses don't fit the early tanks.
The gas tank sellers list a different tank for the RV series from the 82-86 CK. 1987-1991 RV with TBI probably has baffles for the pump in tank sender assembly.
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1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. |
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06-25-2015, 03:48 PM
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#6 |
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Registered User
Join Date: Apr 2014
Location: Bloomington Indiana
Posts: 1,041
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Re: 16 to 20 gallon tanks
Understood about the year differences. On same year, do the same filler hoses and vent hoses work on 16 & 20?
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Rich Weyand 1978 K10 RCSB DD. |
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06-25-2015, 03:57 PM
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#7 |
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Moderator
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,932
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Re: 16 to 20 gallon tanks
The 20 gal tank is longer. There's only one bend in the filler and vent hoses. I had to cut my hoses shorter with handy cutters but only slightly. I didn't need to put new ones on.
The parts house hoses are probably 16gal length or a little longer.
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1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. Last edited by hatzie; 06-25-2015 at 04:02 PM. |
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06-25-2015, 04:20 PM
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#8 |
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Moderator
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,932
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Re: 16 to 20 gallon tanks
This should show what I'm talking about.
The 20gal tank is obviously longer from the strap dimples to the end of the tank. More than I remembered. Did this in 1994.
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1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. |
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06-25-2015, 04:21 PM
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#9 |
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Registered User
Join Date: Oct 2011
Location: Plumas Lake, CA
Posts: 386
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Re: 16 to 20 gallon tanks
hoses are fine. I retrofitted the newer filler with a door to my both sides of my bed anyways. Used a exhaust reducer to go from old inlet at tank (smaller) to adapt to new filler at bed side (larger). Works great and no more spillage.
Lock the nozzle and wait for the click. thanks for the responses edit: those photos above appear to show a significant length and filler location difference |
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06-25-2015, 10:43 PM
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#10 | |
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Moderator
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,932
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Re: 16 to 20 gallon tanks
Quote:
__________________
1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. |
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