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1968 Camaro ls1 help

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Old 09-19-2015, 08:41 PM
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Default 1968 Camaro ls1 help

Hello,
I have a 68 Camaro with a budget lm7 ls1(intake) t56 swap. It pulls hard thru first - third but begins to stutter in fourth - sixth gears. Exhaust smells like raw fuel. At speed. If you ease into it it will go.

Also suspension banging and shift issues into 2nd and 4th.
Any advice would help.


Old 09-20-2015, 09:37 AM
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Is it tuned?
Old 09-20-2015, 11:31 AM
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Yes it has. All factory except shorty headers. I have an in line MSD fuel pump from speedway and I feel like it's starving.
Old 09-22-2015, 08:38 PM
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What fuel system (tank) are you running? What is the tank level when it has these symptoms?
Old 09-24-2015, 06:19 PM
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Originally Posted by 130fe
What fuel system (tank) are you running? What is the tank level when it has these symptoms?
It is a new factory tank with a jegs style weld in sump. Two AN hoses out. One is the return line from regulator and one is the feed line for the fuel pump
Old 09-24-2015, 07:05 PM
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Just ran thru the gears with fuel pressure gauge taped to windshield. Showed 60psi the whole time
Old 09-24-2015, 08:08 PM
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It is definitely way to rich. Going to check plugs tomorrow to verify. Any thoughts why it would be rich?
Old 09-25-2015, 11:23 AM
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Exhaust leak!
Old 09-25-2015, 07:45 PM
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Actually runs worse!! Are my vacuum hoses right?

Old 09-25-2015, 08:35 PM
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I see you have the intake pcv port plugged. Where is the pcv valve? I dont see a port on the valley cover, so I assume you are running an LS1 style PCV setup? The hose from the TB to valve cover is correct, but I dont see the rest of the pcv system.
Old 09-26-2015, 06:58 AM
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Originally Posted by SS69LS1
I see you have the intake pcv port plugged. Where is the pcv valve? I dont see a port on the valley cover, so I assume you are running an LS1 style PCV setup? The hose from the TB to valve cover is correct, but I dont see the rest of the pcv system.
Does it have to have it? I have a brand new one but it won't work with my valve cover without modification. I been told of an inline one but haven't found one yet.
Currently the other valve cover is capped, the other side of the throttle body is capped, and the sensor at the back of the intake (HVAC and vacuum for Brake) is capped.
Old 09-26-2015, 07:06 AM
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Yes, def have to have one. It will suck oil out of the motor without it. The sensor at the back of the intake is the MAP sensor, and is def needed. If youre referring to the vacuum ports, no problem capping those. Also no problem capping the EVAP port on the driver side of the TB. The port on the pass side of the intake near the throttle linkage is for the PVC. You need to run that w inline PCV valve both to valve covers (or at least 1)
Old 09-26-2015, 07:45 AM
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Originally Posted by SS69LS1
Yes, def have to have one. It will suck oil out of the motor without it. The sensor at the back of the intake is the MAP sensor, and is def needed. If youre referring to the vacuum ports, no problem capping those. Also no problem capping the EVAP port on the driver side of the TB. The port on the pass side of the intake near the throttle linkage is for the PVC. You need to run that w inline PCV valve both to valve covers (or at least 1)

Where do I find an inline one?
Old 10-01-2015, 07:22 AM
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Codes from last night still running rich

P0102
Mass Or Volume Air Flow A Circuit Low Input
P0200
Injector Circuit
P1635
5 Voltage Reference
1 Circuit
Old 10-05-2015, 05:16 PM
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Old 10-05-2015, 05:36 PM
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Disconnected MAF and the IAT stayed at -38.
Old 10-11-2015, 09:09 PM
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Update. Mag connector had some crossed wired. Rewired it and now have both iat and coolant sensor at 70 before starting. Going to check plugs tomorrow still runs like crap.
Old 10-12-2015, 02:19 PM
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Originally Posted by SS69LS1
Yes, def have to have one. It will suck oil out of the motor without it. The sensor at the back of the intake is the MAP sensor, and is def needed. If youre referring to the vacuum ports, no problem capping those. Also no problem capping the EVAP port on the driver side of the TB. The port on the pass side of the intake near the throttle linkage is for the PVC. You need to run that w inline PCV valve both to valve covers (or at least 1)

Still has huge dead spot!! Any ideas?



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