Ford Mustang Camshaft Specs 1985-1993

[Darren5.0L]

Ford Mustang Camshaft Specs 1985-1993

1985-1988
PN# E5ZE-AA

H.O. Motors equipped with a manual transmission were fitted with a hydraulic roller-tappet camshaft for the first time in 1985. Previous to this Windsor motors were reliant on the flat-tappet hydraulic cam used in the 1982-84 H.O Mustangs

LIFT (in.)
Intake - .278
Exhaust - .278

DURATION (degrees)
Intake – 266
Exhaust – 266

EVENT PHASING (degrees)
Intake Open – 17
Intake Close – 69
Exhaust Open – 67
Exhaust Close – 19

OVERLAP
Degrees – 36
Factor – 9.04

LOBE CENTER
Intake – 115
Exhaust – 115

1989-90
PN# E8ZE-CA

In late 1988, the roller camshaft was modified slightly. The intake lobe's opeing and closing ramp contours were adjusted to reduce valvetrain noise. This change was effective on build dates of August 8, 1988 and afterwrads. Even though this camshaft has a less aggresive contour it does not affect it's lift specs. The change in the valve-open area under this grind's curve degrades the 1989-93 Mustangs' performance by 3 HP. Some engines assembled with this cam may have been installed in Mustangs built late in the 1988 model run.

LIFT (in.)
Intake - .278
Exhaust - .278

DURATION (degrees)
Intake – 276
Exhaust – 266

EVENT PHASING (degrees)
Intake Open – 20
Intake Close – 76
Exhaust Open – 67
Exhaust Close – 19

OVERLAP
Degrees – 39
Factor – 19.51

LOBE CENTER
Intake – 116
Exhaust – 115

1991-1993
PN# F1ZE-AA

Due to a minor revision in the camshaft's front bolt hole depth, Ford changed the part number from the previous year to reflect this. The revision does not affect the cam's lift or phasing specs and the shaft remains interchangeable with all other 5-liter roller blocks.

LIFT (in.)
Intake - .278
Exhaust - .278

DURATION (degrees)
Intake – 276
Exhaust – 266

EVENT PHASING (degrees)
Intake Open – 20
Intake Close – 76
Exhaust Open – 67
Exhaust Close – 19

OVERLAP
Degrees – 39
Factor – 19.51

LOBE CENTER
Intake – 116
Exhaust – 115

1993 COBRA & COBRA R
PN # F3ZE-CA

SVT designed the Cobra's GT40 engine camshaft to meet the extra High Output combination this motor featured. This camshaft was used in all 1993 SVT Cobra and Cobra R models

LIFT (in.)
Intake - .282
Exhaust - .282

DURATION (degrees)
Intake – 270
Exhaust – 270

EVENT PHASING (degrees)
Intake Open – 19
Intake Close – 71
Exhaust Open – 75.5
Exhaust Close – 14.5

OVERLAP
Degrees – 33.5
Factor – 15.24

LOBE CENTER
Intake – 115
Exhaust – 121.5