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06-12-2018, 03:38 PM | #1 |
Senior Member
Join Date: Dec 2011
Location: Moraga, CA
Posts: 799
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Dumb Fuel Hose Question
The stock fuel line for my 1970 C10 is 5/16", but the fuel pump inlet is 3/8".
This is because I'm following the 1970 Corvette/LT-1/Z-28 stock specs for my parts. I'm kind of a hack sometimes, so I know that I can probably just use a 3/8" hose and crank down on the hose clamp on the 5/16" line end. Or possibly I could stretch a 5/16" hose over the 3/8" pump fitting. Or I could make it ugly and put a double barbed adapter in the middle with one for each type of hose. I think any of those would work, but I'm wondering... Is there an existing molded hose available that would have a proper size for each end? It only needs to be around half a foot long. Maybe I'm overthinking this and the 3/8" hose would be fine, but I did have an engine fire about 10 years ago so I'm a little gun shy about any risks under the hood.
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 |
06-12-2018, 06:39 PM | #2 | ||
"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,921
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Re: Dumb Fuel Hose Question
Get the new hard lines that are 3/8" and then use short pieces of 3/8" hose where you need it.
Gary
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'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
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06-13-2018, 11:21 AM | #3 |
is a fungineer
Join Date: Jan 2009
Location: Bakersfield, CA
Posts: 795
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Re: Dumb Fuel Hose Question
If you want to keep the 5/16" hard line, you can also get a 5/16" compression by NPT fitting, and then a NPT X 3/8" hose barb, then run a short 3/8" hose to the pump.
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2003 S10, 2.2 auto- the daily driver, currently with a 2"/2" drop and some minor engine bolt-ons 1978 Impala 2-door, race 350/T350 - the new race car, in progress 1968 Chevy C10 longbed- 3/5 drop, currently undergoing a heart transplant |
06-13-2018, 12:45 PM | #4 |
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Join Date: Mar 2003
Location: Colfax-California
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Re: Dumb Fuel Hose Question
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06-13-2018, 01:08 PM | #5 |
Senior Member
Join Date: Dec 2011
Location: Moraga, CA
Posts: 799
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Re: Dumb Fuel Hose Question
Good point. VIN code says 350 4bbl, but who knows what has been changed in the past 48 years by previous owners. Heck, I think I have a '67 gauge cluster in my '70 truck and there is even a wiper switch where the choke was supposed to be or vice versa.
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 |
06-13-2018, 02:10 PM | #6 |
Senior Member
Join Date: Dec 2011
Location: Moraga, CA
Posts: 799
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Re: Dumb Fuel Hose Question
Great suggestions, everyone. Thanks!
I think in the long run I will track down that 3/8" original style line. InlineTube didn't mention it among their products. It looked like LMC had it in stainless for only the 71/72 trucks. Not sure if that is ok or something will bite me on that. In the short run I'll run some form of adapter. At least to get it running under its own power.
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 |
06-13-2018, 07:46 PM | #7 | ||
"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,921
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Re: Dumb Fuel Hose Question
Inline tube has it... I have used them and they are good quality.
Part# CTF6702, 67-70 V8 1/2 & 3/4 ton front to rear 3/8" 2-pc, SS $85, OE STEEL $60 Gary
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'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
Quote:
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06-14-2018, 01:31 PM | #8 | |
Senior Member
Join Date: Dec 2011
Location: Moraga, CA
Posts: 799
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Re: Dumb Fuel Hose Question
Quote:
This looks like regular steel. https://www.inlinetube.com/_p/prd14/...?q=thunderbird And the stainless version is... Available at Classic Industries.
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 Last edited by mattfranklin; 06-14-2018 at 03:48 PM. |
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