a "real"--- Race Pump RPU-2000
Can a Carter M6903 mechanical fuel pump adequately feed a tunnel ram and two Holley 1850 600s on a mild (425 hp or so) 440? I have 3/8" pickup and line from the stock tank to the carb.
Or, if the Carter M6903 isn't up to snuff, is there another mechanical fuel pump that would do the job? Any real world experiences with something like this? I don't want to run an electric pump for a variety of reasons. Thanks!
Here you go... you asked for a real mechanical "racing" fuel pump...
Race Pump brand RPU-2000 for Big Block Mopars capable of 450gph @ 50psi, piston style race pump, almost any fuel capable,
you will need A/N fittings hoses & a bypass style fuel regulator {or fuel log} & a by-pass hose back to the fuel tank... they aren't cheap @ $319.95, but are a real race pump, are extremely reliable, very little to ever go wrong, also are capable of almost any type fuel system you put on-top of you BB Mopar, short of Nitro Methane,
they don't rob power at all, they don't wear out camshafts or the fuel eccentrics or actuation rods, either, they are far superior to any other
"so called" mechanical race fuel pumps, other than a Waterman, Enderle or Hilborn Etc. or some other camshaft direct &/or belt driven style modular race fuel pump... Summit Racing has them in stock... I also recommend you get a quality fuel pressure gauge, to monitor what the fuel system is doing, although with this
RPU-2000 pump you probably won't ever need to worry about it, after you set the fuel pressure initially... good luck
racing isn't cheap if you want to do it right...
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One the last things you really want to do, is run a race engine lean, fuel starving the engine on a full throttle pass, burning plugs pistons rings valves etc., then ultimately you will have death smoke out the rear & hurt the internals & cost a bunch more $$$ than buying the right stuff & doing it right the 1st time,
IMHFO more engine damage is done to many "real race engines", from lean conditions, than granading them because of parts {
results of leaning them out too much, or running out of adequate fuel supply, way too many times too} or oil failures....