C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

fuel delivery problems! need help please!

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Old Oct 10, 2013 | 10:57 PM
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Default fuel delivery problems! need help please!

I have a aeromotive pump in my 1992 feeding my s/c 383 stroker and I seem to be having delivery problems. If the car is under 1/4 tank I lose 10-12 psi and obviously thats no good. Another thing I noticed is if I put the car into a spin (doughnut) the car will stumble and lose pressure. Im thinking its a pickup/ fuel slosh issue but im not 100% sure. Has anyone had this issue? I have a big weekend coming up for the car and I cant run it like this obviously....so any help would be greatly appreciated exspecially of I can cut my diagnosis time and just fix the issue.
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Old Oct 10, 2013 | 11:19 PM
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Is well documented on here that less than 1/4 a tank will cause pickup problems with enthusiastic driving or a hard launch.
Put more fuel in
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Old Oct 10, 2013 | 11:28 PM
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Sorry, I should have searched but I was on my way out the door for work. Since I now know its a common problem I will search in the morning for threads related to my issue.
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Old Oct 10, 2013 | 11:59 PM
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Originally Posted by smooth1990
Sorry, I should have searched but I was on my way out the door for work.
What I meant was everybody has the same problem and there is no fast fix short of building a baffle in the tank to retain the fuel around the pickup.
Somebody posted their work doing it but I can't find the link at present
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Old Oct 11, 2013 | 05:59 AM
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when i hillclimb mine i need at least 3/4 of a tank to prevent fuel starvation,
I tried 4 blocks of this stuff in the bottom of the tank but it stops the fuel gauge from working properly so i took it out,
http://www.summitracing.com/int/part...050a/overview/
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Old Oct 12, 2013 | 01:40 AM
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Originally Posted by vetteoz
What I meant was everybody has the same problem and there is no fast fix short of building a baffle in the tank to retain the fuel around the pickup.
Somebody posted their work doing it but I can't find the link at present
leesvet wrote up a modification that he made to his fuel pickup. You might have trouble finding that post because he posts a lot. There's nothing like getting hundreds of hits on a search... Google might let you pinpoint it more effectively.
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