Mk3.1 Specifications

The following specifications describe this build of the FFR Mk3.1 with the Breeze EFI Master EzePak featuring the Ford Racing Boss 302 engine.

ALL NEW PARTS WERE EXCLUSIVELY USED.

• 2460 lbs. curb weight (approximate)
• front/rear weight distribution 46.9/53.1%
• wheelbase 90”
• overall length 158”
• front track 58.5”
• rear track 58.5”
• overall height 48.0”
• overall width 70.5”
• ground clearance 4.50” front, 4.75” rear at full curb weight
• fuel capacity 15 gallons, pro forma 255 to 300 mile range per tank
• fuel sending unit and fuel pump access panels in trunk
• VIN plate located on driver side cockpit cross brace

• Aston LeMans style polished aluminum fuel cap
• British Racing Green (see Paint Selection) with matching Finish Line side louvers
• dual roll bars, POR-15 durable black finish, Russ Thompson trim rings
• Breeze trunk hinge system, prop rod, and trunk lock
• FFR hood hinge system, Breeze prop rod, and dual hood locks
• rolled edges, fender edges, widened tail light platforms, precision fit; see discussion of body modifications
• period-correct separate bolt-on hood scoop
• black side pipes with chrome heat shields
• chrome over-rider bumpers front and rear (can be easily swapped for quick jacks)
• DOT-approved vintage headlight assemblies with halogen lamps, WeatherPak connectors
• British style front amber turn signals, and red rear taillights, WeatherPak connectors
• period-correct 427 side and Cobra nose/deck badges
• brake duct and oil cooler aluminum mesh screens
• custom radiator cowling

• Ford Racing BOSS 302 M-6007-X302E
• 302 cubic inch ¹⁾
• 340 hp @ 5500 RPM, peak torque @ 2,500 RPM
• 9.0:1 compression ratio (nominal)
• Mahle forged pistons
• forged steel connecting rods and crankshaft
• BOSS 4-bolt main block M-6010-BOSS302 for lower-end stability at high power outputs
• hydraulic roller camshaft M-6250-E303, .498” lift intake and exhaust, duration at .050” is 220 degrees intake and exhaust
• double roller timing chain set M-6268-A302
• Hi-Po SFI approved harmonic damper
• Ford Racing aluminum GT-40 cylinder heads M-6049-X306 with 1.94” intake valves and 1.54” exhaust valves
• ARP cylinder head bolts
• roller rocker arms M-6564-B351
• fuel pump eccentric M-6287-B302
• reverse rotation water pump
• valve covers M-6582-BOSS302
• SFI billet steel flywheel with dowel pins pre-installed M-6375-D302
• Canton racing oil pan with rear sump trap doors
• firing order 1-3-7-2-6-5-4-8
• high-tin 41,000 PSI tensile strength iron alloy and nodular iron main caps for additional strength
• screw-in freeze plugs
• front cross-over lifter oiling for high RPM valve train capability
• Siamese bores with specifically engineered drillings between cylinders for maximum wall stability and gasket sealing with street capable cooling performance
• 1.4Kw mini starter
• SFI high performance balancer with two 0-40° timing marks (use set to left, facing engine, for reverse water pump configuration)

Ford Racing offers two versions of the 302 BOSS engine ∼ models B and E ∼ that differ primarily in the camshaft used. The B model suffers a rougher idle to yield 5 more horsepower at peek RPM. Either engine works well with the Mk3.1, but this build is oriented towards a vintage street version of the Cobra, and the 302 E, with a tamer idle, is the preferred choice.

• Mass-Flo electronic fuel injection with single plane intake manifold and integrated fuel injector bungs ²⁾
• Mallory distributor, TFI mount, EFI Ford 302, HEI cap style, Series 79 (797040-002) with NAPA MP711 pickup
• Aeromotive fuel regulator, 40 psi operating pressure
• computer-controlled radiator fan, fuel pump
• self-test connector for diagnosis codes, under dash passenger side
• BBK 4-into-4 exhaust headers with welded oxygen bungs and sensors
• pro-forma 17-22 mpg highway driving

• separate fuse boxes for EFI and main harness
• 3G, 95-amp alternator
• 100 amp mega-fuse for alternator connection
• multiple grounds for horn, radiator fan, lights, fuel pump, wipers, computer case
• WeatherPack connectors on all body-mounted lighting
• engine bay-mounted Breeze battery box
• Optima 51R deep cycle battery (yellow top)

• T5 M-7003-Z 5-speed manual transmission with short throw shifter
• heavy duty 300 ft-lbs torque capacity
• gear ratios: 1st 2.95; 2nd 1.94; 3rd 1.34; 4th 1.00; 5th 0.63 (same as 1984 T5 ratios)
• double moly 2nd speed, 3rd speed and countershaft cluster gears
• carbon fiber 3-4 blocker rings
• 1.0625” diameter 10 spline input shaft, 28 spline output shaft
• 7 tooth speedometer drive gear
• Cobra style pocket bearing
• steel input bearing retainer
• limited slip powder coated differential with cast iron housing and aluminum cover, 3.55:1 final gear ratio (same as 2004-05 ratio)
• Mustang HD clutch M-7560-C302N 10.5 inch single disc

• independent front suspension, adjustable upper control arm
• independent rear suspension, adjustable upper and lower control arms
• Koni coil over shocks with ride height adjustment sleeve
• ground clearance 4.50” front, 4.75” rear at curb weight (full fuel tank, 2 passengers)
• FFR coil springs, 500 lb front, 750 lb rear
• Ford Mustang GT twin piston calipers with 11” front 5-lug vented rotors (1994 style)
• Ford Cobra rear calipers with 11.65” 5-lug vented rotors (1994-98 style)
• Wilwood 0.75” bore dual master brake cylinders
• front/rear balance bar brake adjustment, removable access cover on footbox
• dual remote fluid reservoirs with convenient hood access
• 15:1 manual steering rack
• front alignment
  • -1.00° camber ± 0.10
  • 5.0° ± 0.8° caster
  • 1/16” (.25° ± 0.05°) total toe in
• rear alignment
  • -1.00° camber ± 0.30
  • 1/16” (.25° ± 0.10°) total toe in
  • caster not adjustable in rear

• Team III Halibrand wheels, 17×8” front, 17×10.5” rear, with spinners
• Sumitomo HRT Z tires, 245/45 R 17 front, 315/35 R 17 rear
• AC Interiors wheel well liners, front and rear
• tire pressure 26 PSI front, 24 PSI rear
  • average 10 PSI per 1000 LB of vehicle curb weight, with 2 PSI differential between front and rear

• vintage door latches and leather check straps
• Herb's leather door panels
• upgraded Bentley black carpet with edging, driver floor and side scuff pads
• full cockpit and trunk sound, vibration, and heat insulation
• adjustable fresh air vents
• stainless shifter handle, shift knob, boot, polished ring
• wipers, two-speed
• left and right indicator lights (green), high beam indicator light (blue), check engine light (red)
• dual horns
• vintage leather seats with Breeze adjustable tilt mount
• dual roll bars with Breeze circular head rests
• Wilwood pedal box
• adjustable, non-skid accelerator pedal
• pedals matching height for heel-toe performance driving
• battery cutoff switch with keep-alive memory fuse
• vintage windscreen, tinted with Whitby custom side bars; DOT safety glass compliant
• windscreen-mounted mirrors, rear and driver side
• FFR wind wings
• Lokar handbrake mounted driver side of transmission tunnel
• vintage wood and aluminum 14” steering wheel, impact-design column, machined aluminum hub
• Russ Thompson steering column self-cancel turn signal with high beam/flasher
• 12-volt underdash recessed accessory plug
• vintage all-electronic gauges
  • speedometer, reverse read†
  • tachometer†
  • oil pressure
  • clock†
  • fuel level†
  • voltmeter
  • water (coolant) temperature, degrees celsius

†under dash calibration patch bay

• tubular powder coated space frame with integral backbone
• 3-point roll cage, structurally mounted 2” DOM tubing
• aluminum paneling — .040” thickness, alloy 6061-T6
• sub-structure riveted and bonded to frame with silicon
• hand-laid vinylester composite body
• molded liners for hood, doors and trunk, D-shaped edge seals
• full cockpit and trunk heat, fire, and sound insulation
• upgraded Bentley black carpet, cockpit and trunk, with edging

• Simpson harness restraint 5-point system with floor mounted anti-submarine strap
• driver and passenger roll bars with Breeze circular head rests
• cockpit fire extinguisher
• dedicated front and rear brake master cylinders with balance bar adjustment
• inertia switch, behind dash on passenger side
• neutral safety switch
• heat shields on side exhaust pipes
• DOT-approved windshield and exterior lighting
• emergency flasher
• dual speed wipers