Register or Log In To remove these advertisements. |
|
|
|
Thread Tools | Display Modes |
|
01-04-2020, 03:17 PM | #1 | ||
Registered User
Join Date: Jun 2008
Location: Jackson, Ca.
Posts: 674
|
Re: Vortec swappers with dual tanks: how'd ya do it?
Digging up an old thread....
Quote:
Quote:
Here's the paper napkin plan: Each in-tank TBI pump (both new Delco pumps 7 months ago), through the factory fuel lines to the stock tank switch valve, then valve would feed into the high pressure pump (Walbro 255 in-line that I already own, just need to splice in), then into a Wix 33737 Corvette style filter/regulator (and fuel return plumbed back into the factory/stock fuel lines, through the switch valve), lastly to the 2005 returnless the fuel rail inlet. This would be the least expensive route for me since I already own everything from a previous project combined with the factory TBI fuel system. Easiest too from a labor stand point.
__________________
Cable -K5 Blazer 2wd: 6.0 LQ4, 7875 Turbo, Tick Stage II Turbo Cam, Built 4L80e, RevMax Billet 3600, 9.5" 14 Bolt -Chevy 3+3 Crew Cab Dually: Cummins 12v P-Pump Swap, Compound Turbos, A2W Intercooler, NV4500HD, 4wd conversion, Radius Arms, Coilovers, Crossover Steering, etc Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=803608 |
||
01-05-2020, 12:26 PM | #2 | |
*************
Join Date: Apr 2005
Location: Pensacola, FL
Posts: 17,848
|
Re: Vortec swappers with dual tanks: how'd ya do it?
Quote:
__________________
Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 |
|
04-08-2021, 10:40 AM | #3 |
Registered User
Join Date: Sep 2019
Location: Scottsdale Arizona
Posts: 114
|
Re: Vortec swappers with dual tanks: how'd ya do it?
I’m digging up your old dug up post now...
Did you ever do this? 1977 K10 I just installed an Edelbrock ProFlo 4 system, but I’m not happy with the fuel system. What I currently have is dual tanks into one of the newer switching valves, into a 60 PSI fuel pump, up to a regulator that splits into the injector rail and return line, which is then plumbed back into the switching valve. My problem is that the external pump is overheating. After an hour or so of driving, I can start to hear the pump whining, and I can watch my fuel pressure slowly creep lower and lower on the tablet that came with the ProFlo system. The pump is mounted underneath the top portion of the inside passenger frame rail, but is somewhat close to my exhaust. I’m pretty sure the heat soak from the exhaust is overheating the pump. This was most apparent when I took the truck for a 4 hour off-road trip on an 80 degree day a few weeks back - I had to crawl on the bumpy ass Road so slowly that there was no air flow underneath to move air. It was a nightmare - on the way back, I had to stop every 20 or 30 minutes and spray cold water onto the fuel pump, wait for it to cool down, and then start again. However, I just took the truck out camping last weekend, and was on the highway for about an hour. It wasn’t as bad as the off-road trip, but I towards the end, I could still hear the fuel pump whining over my loud exhaust, and my pressure started slowly creeping down again. What I’d like to do is just replace the dual tanks with newer baffled tanks and internal fuel pumps, but am struggling comprehending how I’d go about controlling which pump activates in unison with the switching valve. Also, any recommendations as far as which tanks and internal pumps I should be looking for would be awesome. The senders themselves are both about a year old, but I don’t mind replacing them again either |
04-08-2021, 12:54 PM | #4 | |
Registered User
Join Date: Dec 2011
Location: Yuma Arizona
Posts: 1,526
|
Re: Vortec swappers with dual tanks: how'd ya do it?
Quote:
So far I have come up with needing to replace the tanks with 87 versions, Spectra sending units, EP381 pumps, 87 rocker switch, AC Delco 6 way valve (replacement for the Pollack) and new FI rated hoses and clamps. |
|
04-08-2021, 01:14 PM | #5 | ||
*************
Join Date: Apr 2005
Location: Pensacola, FL
Posts: 17,848
|
Re: Vortec swappers with dual tanks: how'd ya do it?
Quote:
Quote:
http://67-72chevytrucks.com/vboard/s...d.php?t=754061
__________________
Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 |
||
04-14-2021, 09:58 AM | #6 | |
Registered User
Join Date: Sep 2019
Location: Scottsdale Arizona
Posts: 114
|
Re: Vortec swappers with dual tanks: how'd ya do it?
Quote:
Are you planning on running the new fuel pumps via the PF4 somehow? Or are you just running separate power lines to the pumps? I’m actually considering now ditching the dual tanks and installing a single, large fuel cell under the bed. I haven’t even got to the point of checking out fuel cells, but my concern is finding a large enough capacity. I like to use the truck for a lot of overlanding type stuff, and don’t want to be constantly worrying about running of of gas. The reason I like the dual setup is because I can hold nearly 40 gallons |
|
05-30-2021, 08:47 PM | #7 | |
Registered User
Join Date: Sep 2019
Location: Scottsdale Arizona
Posts: 114
|
Re: Vortec swappers with dual tanks: how'd ya do it?
Quote:
|
|
05-30-2021, 10:27 PM | #8 |
Registered User
Join Date: Dec 2011
Location: Yuma Arizona
Posts: 1,526
|
Re: Vortec swappers with dual tanks: how'd ya do it?
No, I haven't but I have the list of parts I need. I just bought a new GMC so it's kind of on the back burner at the moment. I'll have to order it one piece at a time now. Probably get the fuel tank first and get it swapped over and running on one tank and add the other side in the near future.
|
01-06-2020, 07:56 PM | #9 | |
Moderator
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,961
|
Re: Vortec swappers with dual tanks: how'd ya do it?
Quote:
Lift pumps in the tanks that can supply enough volume to keep the single high pressure pump mounted outside the tanks happy. As I said in the dual tanks post... the return pressure shouldn't damage a 65PSI Pollack valve. I did neglect to mention that you'll probably have to update the valve to the latest and greatest from Pollack. The original GM valve is not rated for 65PSI more like 35 or 40PSI.
__________________
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. |
|
Bookmarks |
Thread Tools | |
Display Modes | |
|
|