And with you staying witha qjet...you now have a small fuel bowl to contend with....all the more reason to have a strong fuel supply
I hear you hugger, you are right about the fuel. The car will not be a dedicated drag car, so I will stick with the tank for now. But if I see I am having issues I will look into a fuel cell.
That's how I did mine when I was running nitrous oxide. I had a Carter pump pushing to the factory Stage 1 pump with the return line hooked up. Before nitrous oxide and the pusher pump, on the floor it would porpoise in 2nd gear at near red line. Like I was stabbing and releasing the gas as quick as I could. The pusher pump stopped that and the nitrous never starved it at +125HP setting on a mild 455 that I spun to 6,200 RPM lots of times.
Since we're on the topic (if the op objects here I'll delete), I'm in the early planning stages but thinking for a stock "appearing" build that I want to run an in-tank electric pump, ⅜" line (no return), regulator (hidden up near the tank), & a mechanical pump w/no arm (i.e. for looks only). Probably low 400 HP & Quadrajet. Thoughts, recommendations?
That's my setup but using the stock 1/4 in for return with an aeromotive dually bypass reg Hopefully 475hp with qjet
This car wouldn't have come w/a return line orig. & was hoping that wouldn't cause an issue w/the electric pump but figured if regulated it wouldn't be any different than a mechanical.
In case you don't know running the pump dead head causes the pump to actually to cavitate when using enough fuel........as it tries to pump the fuel against an already full fuel line.....this causes the amps to go up its pulling and all the heat builds up. Running it return style everything runs cooler, and quieter, the moving fuel actually helps pull the heat off the pump. The bigger of pump you try to run dead head the more the heat issue becomes which just equals shorter life and melted power wires
Here's a thought: Couldn't the return line be very short? Basically just tee off the main line after (before?) the requlator & have it all hidden up near the tank?
I theory yes. I don't know how the long travel at the lower psibwould effect the end volume, but as long as it's enough to meet thr motor yes. I like the areomotive a 1000 pumps. They are quite and move more fuel than most need........
A1000 is a brute....solved a few problems for me over the years....can mount it on the roof and it will work
l have used this system a couple times with very good results. one application was a 700 HP street car, that we sumped the back of the tank, and set the fuel pump down in the sump.. the other was a 625 hp motor with port efi, and a third was a motor pretty much like Walter's, carbed.. we used the deadhead version on that one, with no issues. https://www.summitracing.com/parts/...5yEruuQ05cPv1xGJJ6I86zLpwMv78K2RoC5KAQAvD_BwE BTW... all fuel tanks 71 and later have a baffle in them,right in the middle.. this was required to keep liquid fuel out of the vapor separator system they went to in 71... (that silver canister in the rear seat back) Using this fuel pump, you can use the stock 3/8 fuel line, and add a return.. which is best.
Thanks Jim. That seems what I'm looking for & even better if it can be run dead headed. Never thought about running a '71 tank in the '70 but...
General question to any who can answer. The car has a 1/4" return from the factory. Can that be used as a return or does a new larger line need to be installed?
I currently have the stage 1 pump with holley red in series using the factory return line . Supports 180hp of nitrous. No issues.
