- Jul 20, 2008
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I have a:
1991 LX hatchback 5.0L w/ 5 speed manual & 3:08 traction lok
circa 1999 GT40P crate motor w/ about 12K miles on it
Ford Cobra cast intake
FMS E303 cam w/ 1.7 roller rockers w/ stock GT40P valve springs
65 mm FMS throttle body
24# injectors
73mm C&L mass airbody calibrated for 24# injectors
FMS shorty headers for GT40P drop in conversion
To review recent mods I have changed to new OEM coil, new cap & rotor, platinum plugs w/ stock motorcraft gap, new wires and new OEM pressure regulator. I put in a BBK 155 lph fuel pump last summer. Of note it seems quieter than the stock factory 89 lph unit. Also set the timing back to 10~12 degrees. Was about 16~18 initially. No pertinant error codes form a hand held box.
At 4500~5000 RPM it begins to miss / cutout. It is worse under a load. It did all this with the, stock fuel pump, stock mass air body & 24# injectors too.
It tends to idle at about 1000 RPM also.
Any suggestions please??
1991 LX hatchback 5.0L w/ 5 speed manual & 3:08 traction lok
circa 1999 GT40P crate motor w/ about 12K miles on it
Ford Cobra cast intake
FMS E303 cam w/ 1.7 roller rockers w/ stock GT40P valve springs
65 mm FMS throttle body
24# injectors
73mm C&L mass airbody calibrated for 24# injectors
FMS shorty headers for GT40P drop in conversion
To review recent mods I have changed to new OEM coil, new cap & rotor, platinum plugs w/ stock motorcraft gap, new wires and new OEM pressure regulator. I put in a BBK 155 lph fuel pump last summer. Of note it seems quieter than the stock factory 89 lph unit. Also set the timing back to 10~12 degrees. Was about 16~18 initially. No pertinant error codes form a hand held box.
At 4500~5000 RPM it begins to miss / cutout. It is worse under a load. It did all this with the, stock fuel pump, stock mass air body & 24# injectors too.
It tends to idle at about 1000 RPM also.
Any suggestions please??