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#1
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Anyone Using Holley's New Muscle Car EFI Fuel Modules
I have been kicking around the idea of getting rid of my Q-Jet and going with the Holley Sniper EFI. For the fuel system one option is to replace the tank with one of Tank Inc EFI ready tanks which takes care of all of the fuel problems with the conversion. I was thinking of using the 3/8" stainless steel line that is already in the car as the return line and run a new 3/8" fuel hose for the supply line. The other option is to go with what the Holley Tech recommended which is their new Muscle Car EFI Fuel Sending/Pump Modules which replaces your stock sending unit and eliminates the need to run a return line, return fuel is handled within the sending unit, and you use your stock tank and fuel lines, as long as they are 3/8". Here is the link https://www.holley.com/products/fuel...s/parts/12-302
Has anyone out there used these new sending units, and if so, are you having any problems? It does seem like a lot easier and less expensive than having to replace the new tank with another new tank and having to run another fuel line. Did I mention the tank is full of fuel? Fun, fun Thanks, Dale
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1969 428 Tremec 5 Speed U.S. Army Retired Retired Helicopter Pilot |
#2
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I would recommend the new tank, it's the best option. What you can do however is run the corvette regulator/filter combination. You would then plumb EFI hose to that regulator from the tank, and back as the return. You can then use your existing 3/8 line to the Sniper and dead head it there.
https://www.summitracing.com/parts/t...iABEgIbqvD_BwE That way, you get the advantages of a true EFI ready tank and the ease of installation without a lot of hose that you get from the Holley fuel module.
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-Jason 1969 Pontiac Firebird |
#3
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Quote:
Thanks again, Dale
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1969 428 Tremec 5 Speed U.S. Army Retired Retired Helicopter Pilot |
#4
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What type of driving do you do with the car? If you partake in driving that can result in the pickup being uncovered, unlike with a carb that you have the bowl to help you out, you don't have that with EFI. It's why EFI tanks have built in sumps and baffles to prevent fuel slosh and keep the pickup covered during all driving maneuvers.
If the car is only ever cruised around, doesn't see hard launches or anything like that, you can probably get away with it. If you drive the car spiritedly you'll likely need to keep the tank at least about half full at all times. I run a Tanks Inc setup in my bird and it's absolutely as good as it sounds. Hard acceleration, braking, hard cornering, even below 1/4 tank I've never had fuel starvation with my setup. Like you I tried saving a couple hundred at first on the fuel system, only to fight the car, end up tearing it out and doing what I should have done in the first place, which is the EFI ready tank and fuel pump.
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-Jason 1969 Pontiac Firebird |
#5
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I also saw that Spectra Premium has an EFI tank complete with fuel pump and sending unit which is about $200 less than the Tanks Inc unit. But it surprises me their tank doesn't have baffles and an internal pump reservoir. Plus they get a lot of bad reviews for their pumps failing. Dale
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1969 428 Tremec 5 Speed U.S. Army Retired Retired Helicopter Pilot |
#6
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Their pumps are probably failing because they are being uncovered in operation, by not having the baffling and internal sump.
If the Holley unit has a built in fuel mat like the Aeromotive phantom retrofit, that would be the next best option over a tank without baffling and no internal sump. Heck even tank's inc's retrofit GPA pump at least has an attached mini-sump. https://www.summitracing.com/parts/t...yABEgKnrPD_BwE In my opinion the Aeromotive Phantom retrofit pump module is the best out there for use in a factory or non-efi tank. Good for people that don't have readily available aftermarket EFI tanks. It's cost at $495.00 is just a couple nights not eating out away from being a full tanks inc setup though.
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-Jason 1969 Pontiac Firebird |
#7
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Fuel pressure is regulated internally and preset at 58psi, eliminating the added expense of purchasing an external fuel pressure regulator No return line needed. All return fuel is handled inside the tank". Decisions decisions, oh well, its only money
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1969 428 Tremec 5 Speed U.S. Army Retired Retired Helicopter Pilot |
#8
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For your purpose, if your current tank is in good condition, the holley module not be a bad option since it does use the hydromat and has an internal reservoir. If you were ever going to the track, or decided you wanted to have some fun in the canyons for a day, just make sure the tank is full or near full and I think you'll be fine.
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-Jason 1969 Pontiac Firebird |
#9
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Quote:
Thanks for the advice, Dale
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1969 428 Tremec 5 Speed U.S. Army Retired Retired Helicopter Pilot |
#10
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L#
Here’s the LS filter set-up
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There are no problems..only solutions. Last edited by mklinger; 01-31-2019 at 07:54 PM. |
#11
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1969 428 Tremec 5 Speed U.S. Army Retired Retired Helicopter Pilot |
#12
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Fixed
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There are no problems..only solutions. |
#13
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Thanks, nice car. So if that is off of a stock setup then the idea that Holley is using for the Muscle Car Modules should be a good design and work well, in theory. They are using a pressure regulator and bypass to return unused fuel with their in-tank fuel pump. The big difference is that you are using an original tank with no baffles.
Dale
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1969 428 Tremec 5 Speed U.S. Army Retired Retired Helicopter Pilot |
#14
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I have a Tanks Inc tank with in tank pump.
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There are no problems..only solutions. |
#15
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I like the Power Surge: https://www.robbmcperformance.com/pr...owersurge.html
It's easy to install, you can keep all your old equipment and if your fuel tank has a 1/4" return or larger you can use it. Feed should be 3/8" or larger, but I guess that's what you already have. It will be fine for carb or EFI and it will provide fuel at all times.. no matter if your fuel tank has baffles, is almost empty and you're driving uphill or around corners, drag race and so on... |
#16
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I'm using one in my 70 Bonneville, but its because there isn't a replacement
EFI capable fuel tank available for my application. The quality of the parts appears to be great. I did a small write-up on my install here: http://forums.maxperformanceinc.com/...d.php?t=822430 As others have noted, its technically a better solution to use a Tanks Inc or equivalent EFI ready tank, and just sell what you have to cover the difference, but the Holley kit is also viable. I'm very happy with it in my application. -Scott
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70 Bonneville convertible, Vortech V7 YSi supercharged EFI455 + 4L80E |
#17
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I have heard that a mid 80's Buick Grand National tank is a direct bolt in an is baffled. Does anyone know if this is true?
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#18
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Quote:
Quote:
Dale
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1969 428 Tremec 5 Speed U.S. Army Retired Retired Helicopter Pilot |
#19
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I like the looks of that Holley unit. I like that it is self contained, and is a single FI pressure outlet. Makes plumbing a breeze. I went with something similar in my Firebird, but did it more like the LS filter/regulator setup by keeping the regulator back at the tank. I like that these setups continue to evolve. I did an FiTech retrofit pump (cutting was required), with a Tanks, Inc EFI return regulator at the pump outlet. I ended up with a single 58 psi supply going forward. But I get why you would prefer a baffled new tank, no real arguments against that.
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"...ridge reamer and ring compressor? Do they have tools like that?" |
#20
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Quote:
Dale
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1969 428 Tremec 5 Speed U.S. Army Retired Retired Helicopter Pilot |
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