Pulled/sold my 575SCi and installing a known/new to me HP500 with 2.3 top mt whipple Dart Pro1 heads, good bolts, head gaskets and custom calibration on Dyno.

Going in a 28 Pantera, single. Fuel system was custom in the previous home for this engine and I have the components to use in my boat- high end billet filter, electric pump, regulator. Will be fed with 1/2" line from 140 gallon tank, regulator will bypass with 3/8" and return for constant fuel flow and a happy pump. Feed to engine is 1/2". Fuel is not flowing near any hot components aside from the obvious proximity to the engine on the way in but the bypass fuel is pretty far from the exhaust etc.

Water temp will range from 55 to 80 with mostly 70+, not a whole lot colder than air temp.

Will a fuel cooler really do me any good? I know merc uses them but the also keep the whole fuel system much closer to the engine and typically use a more marginal system. I will have a fuel pressure gage as well.

Thanks for any input

I used a cool can on a pro street car but under hood temps I think are higher due to no water jacketed headers.

Good question

With a return back to the tank- No need for the fuel cooler.

If you dump to the tank like Marty says you don't need it. The 28 is difficult to plumb back tot the tank so I think you'll be dumping back to the seperator like I am. In that case you'll need a cooler.

There's a T in my assy right before the filter and aeromotive pump- any issues with returning there vs back at the tank?
It would essentiall dump into the feed line to the assy.

I also need to determine the lesser of the evils with locating the assy. Too low and it could get wet with water in the bilge (Rare occasion) to high and the electric pump will be sucking rather than have a head- not pump friendly- will cruise aeromotive site for tips, but input is welcome pickup comes out the top of the tank so its sucking over that hump regardless- I guess as long as I'm downhill from there I'm good?

Just talked to the previous owner of the engine- he's twisting my arm to just return to the tank, Pepe confirms there is a bung there- I just need to either feed 3/8 AL line through the same bulkhead fitting or punch another hole. Will likely lay the filter/pump/ reg assy sideways across the bulkhead- anyone know how thick it is so i can get the right sized screws? Guess I can pull some other screws for comparison.

cattitude, post some pics please. I'm going to mount my fuel system in the next couple of day's and this thread has me reconcidering my plan. Are you running carbs or fuel injection?

I'll try, but the boats kinda dirty so I'm not real eager to show it off right now. 500EFI with Whipple- the blue paint on the Whipple's trashed too, original owner says it went bad after 3 weeks and was repainted twice- Dustin says it'll last just fine unless you spill fuel on it. I'll have to redo it eventually but likely will wait till fall- boat season and race season (Rockcrawling) coming on strong.

I can dig it. It's like having friends over and not cleaning the house

My main concern is the location of your pump in relation to the tank, etc., etc. and the return line. I'm not sure if I should run one or not( return line).

My set up is carb with aeromotive pump and regulator (of course filter first) I am remounting this new equip and only want to do it once.

Do you have anyplace to mount a mechanical pump? If so I would look at www.racepumps.com for carb or EFI. No return required and no bypass regulator.