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10-08-2002, 10:31 PM | #1 |
Senior Member
Join Date: Jun 2000
Location: Texan in Iowa
Posts: 2,522
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Gas Tank Filler Neck Size Q
Straighten me out on the gas tank filler neck sizes in each year, please.
Specifically I need to know how a '72 compares with a '68. If they don't have the same size filler neck, do they take two different size grommets? Same size cab hole? What about gas caps? Thanks, Ben
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Ben '68 Chevy C10 Custom LWB 327/TH400 2nd owner '16 GMC Sierra 1500 SLE Dblcab 4wd 5.3 |
10-09-2002, 12:17 AM | #2 |
Project Junkie! Fishing Poor!!
Join Date: Dec 1999
Location: Olympia,Wa. 98512
Posts: 10,770
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They have the same size hole in the cab.... It is the neck sizes that are different. The 67-70 use the 2" fill neck hole grommet and the 71-72 use the 1 1/2" hole. WES www.ClassicHeartbeat.com
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On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys |
10-10-2002, 01:26 PM | #3 |
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Join Date: May 2002
Location: Oakley, Ca. USA
Posts: 137
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Anybody know where to get a replacement filler neck for a '71??? Mine had been 'modified' by a previous owner, and leaks when I make right turns and the tank is over 3/4 full... the very top of the filler neck doesn't seal right against the cap...
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Rudy Fierros '95 Honda VFR750F Used to have a '71 Chevy Stepside, Guards Red, Lowered 4" rear, 3" front, White Oak bed wood, 700R4 w/373 gears until some low life stole it! |
06-12-2007, 03:58 PM | #4 |
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Join Date: Dec 2005
Location: Houston, TX
Posts: 51
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Re: Gas Tank Filler Neck Size Q
Yea, LMC has it wrong. They say 1-1/2" for 67-70 and 2" for 71-72. I have a 67 and bought the 2" from them anyway and it fit just right. I though maybe some previous owner had modded it but the hole and neck look factory.
JD |
05-15-2021, 02:45 PM | #5 |
70+ ( Old Skool Club )
Join Date: Nov 2003
Location: Saskatoon, Saskatchewan ,Canada
Posts: 9,130
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Re: Gas Tank Filler Neck Size Q
Resurrecting real old thread but timely for me. I have one of the Classic Heartbeat gas filler grommets, which states they are for 71-72 trucks, and want to use it on my 72 with a filler neck and gas cap as my rear tank is being installed this week and want a dummy fill in original location. According to Wes info in this thread I am thinking I would have to use a filler neck from a 71-72 tank for the grommet to fit. I ask because I have access to a 1970 gas tank but think the grommet may not work with the 70 filler neck.
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1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021 |
05-15-2021, 03:32 PM | #6 |
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Join Date: Oct 2020
Location: Albuquerque, New Mexico
Posts: 474
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Re: Gas Tank Filler Neck Size Q
My '71 C10 w/ EEC has a 2" neck.
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