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C5 Z06 with new setup... Need help!!!

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Old Dec 19, 2014 | 01:04 AM
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Default C5 Z06 with new setup... Need help!!!

Okay guys car is a 2003 with a brand new set up. Fully forged 347 with stage 1 317 port and polish 72cc heads, and a stage 2 blower can 227/236 115 + 4 lsa and fast 92mm intake. Car is equipped with a Vortech v-1 T trim kit with a 4.00 pulley making 8lbs of boost. Compression ratio is 9:5:1 I believe (zr1 head gaskets) also the car has american racing headers and mid pipe combo with a borla catback. My question is can the car make 700hp on pump or will I need to upgrade the fuel system and run meth? Car has 80lbs injectors, boost a pump and walbro 340. Any input or suggestions are appreciated.

Last edited by redformulaws6; Dec 19, 2014 at 01:42 AM.
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Old Dec 27, 2014 | 03:32 PM
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I make 700 on pump only but I am nitrous. Not sure about blowers. Most run meth for safety.
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Old Dec 28, 2014 | 01:22 PM
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Default E85...

Too much cylinder pressure for a 3.9 cylinder bore to go to 700 wheel horse power on pump gas imo.

Fuel pump you have should be sufficient, you should be able to run 12 psi with pump gas.

You can do anything you want with e85
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Old Jan 12, 2015 | 03:22 PM
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You'll probably either need a 2nd in-tank pump or an external pump. I think the walbro peters out ~600-650hp.
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Old Jan 14, 2015 | 12:40 AM
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ysb02 is correct. I was running two 340s before making 610rwhp on 8psi. I had enough pump for more but I switched to e85 and walbro 450s making 690rwhp with 11psi and conservative timing. I dont care for boost a pumps so I had two pumps hard wired in. Better to go with a return style fuel system too.
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Old Jan 14, 2015 | 12:43 AM
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Still got the two 340 pumps laying around if you need one.
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