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HAM1974
04-26-2009, 09:25 AM
ran my truck at the track , went from first to second then drive then it just fell on its face at about 1000 ft. I am running stock mech fuel pump pulling through old lines, 750 edelbrock carb maybe 350 hp.
jameskirk57
04-26-2009, 09:38 AM
I'd check fuel pressure while under load
oncearacer52
04-26-2009, 09:46 AM
When you run out of fuel going down the track the motor shuts off just like you turned a switch and as long as you hold the throttle wide open it will not run. Let off it and it will take back off. I have heard a lot of people say their motor is starving for fuel because it slows down. I don't really think that is possible. Once your bowl(s) go empty you will not get the level back until you stop drawing fuel into the intake. The ratio will be way to lean for the motor to run until the motor is about to quit rotating. If your motor is doing this then you are probably right. You need more fuel. I would suspect the fuel pump or filter tho because your lines should be big enough for what you have.
harleyboy
04-26-2009, 11:45 AM
you pump is not pumping enough fuel man you can get a bigger pump for it and/or a electric pump so there is no starving the motor.
jameskirk57
04-26-2009, 01:35 PM
Might also check valvesprings or valve adjustment
HAM1974
04-26-2009, 06:07 PM
Thought the valves could be a problem, but i ran it to about 6000 rpm in 1 st and2nd lost power at 4500 to 5000 IN DRIVE.
OH_YO
04-26-2009, 06:20 PM
Is the old electric pump still in the tank?
HAM1974
04-26-2009, 07:31 PM
Yes it is, like i said through the first to gears great then drive at about 1000 feet almost like its trying to stall.
manyfire
04-26-2009, 07:46 PM
Vacuum advance? could be going bad
OH_YO
04-26-2009, 08:13 PM
Bet the sock is bout stopped up, or it may be struggling get get it through the pump.

This was in my tank and was making my truck stumble.

http://i3.photobucket.com/albums/y66/luvinnc/100_1200.jpg

You could do this, I had it done for 70 bucks.

http://i3.photobucket.com/albums/y66/luvinnc/DSCN1460.jpg
HAM1974
04-28-2009, 07:51 PM
Nice tank! Something i forgot to mention my mech pump has a port for the return line! Maybe i should just plug off the port and fuel line.
OH_YO
04-28-2009, 08:21 PM
Let me know if you need help with it. 423-213-1289