CK5
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Fuel sender for LS swap- K5 tank in k30
- Thread starter tonytheplumber
- Start date
By looking at the selections on Walbro’s site, the GSS340, GSS341, and GSS342 appear to all be the same description as far as pressure and flow rate. The GSS341 and GSS342 appear to have a hose connection on the inlet and the outlet, just different orientation/location on the inlet between the 2 models. The GSS340 appears to have the large sock/strainer sized inlet like the factory pumps do. That was what led me toward the GSS340. The GSS341 and GSS342 have an installation kit available which includes a sock with a smaller diameter fitting which will attach to the smaller, tube sized inlet. But, the way the factory pump uses the rubber isolator sized for the larger inlet at the base of the sending unit to stabilize the pump, wouldn’t you think the GSS340 would be the way to go?
What’s wrong with using the ep381?
It puts out 58psi?
It puts out 58psi?
It was stated in a prior reply that the EP381 doesn’t create enough volume at the necessary pressure. I know of a guy who is using one, and I assume it is working for him. Although, he is running a stock engine. I will be running higher compression and an aggressive cam. If the EP381 is barely enough, I’d prefer to err on the side of excess.
I thought the ep381 number sounded low...found elsewhere on the web, but I imagine Airtex could confim:
"EP381 (E3270 Airtex) = Flow = 50-60 GPH & PSI = 80-90
Here again that psi rating is under perfect conditions at the lab and on the head of the pump. It should yield you a 70-80psi in the vehicle."
BTW, the delco spec for that pump on rockauto is completely different...108psi at 27gph. I assume those numbers came from delco, but I cant find the part number search on acdelco.com on the phone to verify.
"EP381 (E3270 Airtex) = Flow = 50-60 GPH & PSI = 80-90
Here again that psi rating is under perfect conditions at the lab and on the head of the pump. It should yield you a 70-80psi in the vehicle."
BTW, the delco spec for that pump on rockauto is completely different...108psi at 27gph. I assume those numbers came from delco, but I cant find the part number search on acdelco.com on the phone to verify.
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Those numbers are close to what Walbro's are on their GSS140, 141, and 142. All Walbro states is "over 50 GPM at 80 PSI". Close enough that I'd consider using the Delco pump.
I dont know what is going on with the EP381 numbers, I'd definitely want to verify with AC or someone that has tested them. I found at least three different sets of numbers online. At least if I could find the numbers from AC (on their site, response to email request, etc.) I'd be inclined to believe them.
Fragola?? They manufacture high quality aluminum fittings (AN, ORB, etc.). I just found the adapters on pg. 31 of their online catalog. Available in black
I got a little hung up on Walbro pump selections. The 5CA400HP sounds like it's rated at 43PSI. The GSS340 doesn't really state an operating pressure, just that it can/will operate at higher pressures without much volume decrease. Will the regulator (either rail mounted or integrated into the fuel filter) not control the higher pressure capability of the GSS340?
I believe the 5CA400HP is the entire kit which contains the GSS340 pump. They are both the same 255 LPH pumps. You won't have to worry about running out of fuel unless you are well over 600whp.
https://walbrofuelpumps.com/walbro-5ca400hp-255lph-high-performance-fuel-pump-kit.html
https://walbrofuelpumps.com/255lph-walbro-gss340-intank-fuel-pump.html
5CA400HP that comes with a smaller generic "hydramat" / wicking "depth media inlet filter"; it's 3" x 1" which is fine for our tanks. You can also just buy the GSS340 pump and add your own install kit which they sell on Amazon and Ebay.
I have the 340 in my cart on Amazon already, but some of the reviews are claiming they are knock-offs, while others are claiming not. I can just order it straight from Walbro and pay a few bucks more to know that it’s the real deal. I’m shooting for 500~Hp so should be all good. Until boost comes knocking on my door
Most AC Deico is made in China.
