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Old Mar 6, 2011 | 09:26 PM
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Default lpe fuel pump

2 things guys..

I got the a& a charger kit for my c5, came with the lpe pump wondering how much rwhp it will support?

Secondly we were tuning car on the dyno. His dyno is showing only 480 hp around same ft lbs..

My mods are a&a charger at 7 psi
Small blower cam .581 .588
Long tubes
Ls6 manifold.

Any guess on what it will put down wheel? I'm kinda embarrased with that hp for what I got into it..

I see everyone mid 5xx hp why is mine lower?
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Old Mar 6, 2011 | 09:47 PM
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Originally Posted by C5sleeper
2 things guys..

I got the a& a charger kit for my c5, came with the lpe pump wondering how much rwhp it will support?

Secondly we were tuning car on the dyno. His dyno is showing only 480 hp around same ft lbs..

My mods are a&a charger at 7 psi
Small blower cam .581 .588
Long tubes
Ls6 manifold.

Any guess on what it will put down wheel? I'm kinda embarrased with that hp for what I got into it..

I see everyone mid 5xx hp why is mine lower?
Intank pump-550-with a BAP-600 fairly easy.

What size pulley did you get? Was the stall locked?

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Old Mar 6, 2011 | 10:01 PM
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Not locked, and intank stock one that comes with standard kit

The largest pulley idk the size supposed to make 8psi

Last edited by C5sleeper; Mar 6, 2011 at 10:02 PM. Reason: forgot information
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Old Mar 6, 2011 | 10:05 PM
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Originally Posted by C5sleeper
Not locked, and intank stock one that comes with standard kit

The largest pulley idk the size supposed to make 8psi
Im pretty sure thats the 3.8 pulley
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Old Mar 6, 2011 | 10:15 PM
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I was gunna say that size but I wasn't sure.. Yea a 3.8 is what size it is
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Old Mar 7, 2011 | 01:08 PM
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With meth I was over 700 for years with 60# injectors on the 97-98 return setup with the LPE pump
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Old Mar 7, 2011 | 07:50 PM
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I told the tuner to hold onto the car and see what else he can squeezeoutta it but 475 wheel with mods listed above is weak I'm thinking of running it down to ecs to get a speed density tune that's plain embassasing at 6 -7 psi couldn't run up past 5k rpms.. Hopefully o ce he gets it to drive it puts down more for like 6000 plus boltons imnot impressed at all... I realize dynojets differ from one to the other but damn I was thinking 520 wheel..

I called a&a and they said same number is where I should be
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Old Mar 7, 2011 | 08:28 PM
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That doesn't sound right with the mods you have. Are the cats clogged?
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Old Mar 7, 2011 | 08:47 PM
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Originally Posted by C5sleeper
couldn't run up past 5k rpms..
There is an issue if the car won't pull past 5k post the sheets, i'm another vote to check the cats as a hopefully first check.
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Old Mar 7, 2011 | 09:47 PM
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the car shouldn't fall off or be limited in rpms. I agree. Get rid of the cats.
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Old Mar 7, 2011 | 09:58 PM
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I'll look but we will see
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Old Mar 8, 2011 | 12:02 AM
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What kind of dyno is it? Dyno jets their semi high numbers and mustang dynos throw lower because they alter load more.or something like that. I've got an 01c5z with returnless fuel and the car made 640/586rwtq on 10# and its hopefully about to go turbo here shortly on 13#
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Old Mar 8, 2011 | 12:49 AM
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Dynojet read more than mustang dyno ... Like I said I left the car there so I'll start complaning after I get it back all tuned, worst case I'll put a smaller pulley on it. Once it is done and I have final numbers I will post.

As for hp per pound of boost what is a general rule? Actual rwhp not being optimistic, 20 hp? 18hp? 15hp?
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