haha, well I was assuming a 1 gallon tank which is typical of what guys use in the spare battery location in the engine bay. Where are you going to put a 6 gallon surge tank? With one that big why didnt you just go with a custom fuel cell?

I also neglected the fact that your intank pump will be filling the tank while your densos drain it....dependng on what that pump is it will probably extend the useful time of the surge tank by a factor of 3.

 

I figured this will be the quickest route compared to designing a new tank with a way to use the fuel level sender, and whatever else. It will go inside the bed, in front of the left wheel well. And a stock pump in the main tank, I don't think you could even consider its measly output into your gallons/second equation.

 

Ha, ha. Maybe after I get my ID2000 injectors.

 

Why would you put three pumps into a "surge tank".

Why not put three high flowing pumps in you main tank/fuel cell and have the two extra pumps come on via a hobbs switch? 4 pumps and 2 tanks seems foolish as hell to me. I think guys have talked on ls1tech.com that 3 walbro 255 pumps in the tank is good for nearly 1000 hp!? Maybe it is slightly less then that but I can promis you 4 pumps is over kill.

 

Unless you have at least half a tank, 3 pumps can drain the bucket faster than the venturi or return line can refill it, hell I have done it with 2 of these pumps, this is why you would want a surge tank. However, when you run big pumps in a small tank you run into the same problem, but surge tanks are usually baffeled so the pumps dont starve as easily. The best solution is a fully baffeled fuel cell so it doesnt have to be full and the pumps dont starve.

Pumps flow a lot more under a zero-pressure condition as would be the case when your are WOT and have 3 pumps draining a small tank, so the stock pump should be able to keep slow down the net loss of fuel from the surge tank an appreciable amount.

 

Design a way to absolutely guarantee that anything other than a stock-dimensioned pump in a bucket won't ever suck air. Thanks. I'm tired of having almost enough fuel. Like I said, I hope to be able to afford to run E85 someday.

 

I forgot about that.

 

I havn't delt with any of the huge fuel demand stuff my self but I have seen quite a few guys on tech with three intank pumps and they never talk about a surge tank. The make a manifold like was posted and let it eat.

I fully understand how quickly 2 or three pumps can starve them self of fuel. Like you said though three pumps in a 6 gallon tank isn't a very good answer in my book.

 

Look arond on tech and you should find an answer to this issue. I don't have it but I know quite a few guys have made them with out issue.

Edit: I searched for a minute and couldn't find pics. If I remember correctly they do three pumps just like two. They clamp them all three together so that three pumps are in held to the bottom of the tank just like a stock set up.

 

I havent delt with an fbody tank personally but I bet it is a better design than the truck tank. When you are low on fuel and accelerate hard all the fuel goes to the back of the tank. This wouldnt be a problem if the pumps were in the back of the tank but the are about 20 inches away in the middle of the tank.