Mk4 Running Gear & Specifications

The Mk4 base kit is configured to use the entire engine/transmission/rear-end out of a 1987-2004 Mustang donor car (5.0 or 4.6 liter V-8, T-5, T-45, TKO, T-56, or 3650 transmission, and Ford 8.8” rear end). The kit is designed so that these parts literally bolt right in. You can use almost any Ford engine in the Factory Five Mk4. Select from:

  • 289/302
  • 351W and derivatives
  • 390/427 FE
  • 4.6L SOHC & DOHC Modular V8
  • 5.0L Coyote Modular V8

Suspension

  • Front Suspension type: Independent double arm
  • Rear Suspension type: Solid rear axle 4-link, 3-link with panhard bar, or IRS
  • Shock-Springs: KONI coil-over with ride height adjustability
  • Steering: Manual or power assisted rack and pinion
  • Brakes: Vented 11/11.65 disc f/r
  • Wheels: Vintage or modern 15”, 17”, or 18” diameter
  • Tires: Common sizes are 245 series front/315 series rear

Vehicle

  • Weight: 2,250 lbs.
  • Weight Distribution F/R: 46.9/53.1 (percent)
  • Wheelbase: 90 inches
  • Overall Length: 158 inches
  • Front Track: 58.5 inches
  • Rear Track: 58.5 inches
  • Overall Height: 48.0 inches
  • Overall Width: 70.5 inches
  • Ground Clearance: 4.5 inches
  • Fuel Capacity: 15 gallons

Construction

  • Layout: Front/mid engine RWD Roadster
  • Frame: Twin tube space frame with integral backbone
  • Roll Cage: 3-point, structurally mounted 1.5” DOM Tubing
  • Sub-Structure: Aluminum paneling riveted and bonded to frame
  • Restraint System: 5-point Simpson Harness

"...We like the Factory Five not only for the level of enjoyment a person can have with it strapped to his backside, but for the great engineering and business feat it is…"

Jim Smart | Editor, Mustang & Fords Magazinemustang-fords-logo