The following table lists the present and future (indicated by 💡 symbol) specifications of our 1972 XJ6 restomod.

1972 XJ6 MODIFIED SPECIFICATIONS
ENGINE
Manufacturer General Motors (Chevrolet)
Model – configuration Gen IV LS3 (similar to 2010 Corvette) – V8
Displacement 6162cc (6.2L)
Bore x Stroke 4.06 x 3.62"
Block and cylinder head material cast aluminum with cast-in-place iron bore liners
Valvetrain valve-in-head; two valves per cylinder; roller lifters
Starter Powermaster PowerMAX 9201
Ignition system distributorless ignition solid state direct-fire
Fuel delivery returnless – multiport fuel injection
Air intake over-the-radiator cold air (OTRCAI) XAIR
Engine mounts custom fabrication pedestal
Compression ratio 10.7:1
Horsepower 426hp @ 5900 rpm
Torque 420lb-ft @ 4600 rpm
Maximum engine speed 6600 rpm
ENGINE/TRANSMISSION COOLING
Configuration modified Corvette style with expansion tank
Radiator custom crossflow aluminum
Fan dual electric 3000 CFM
Expansion tank Radium 20-0270-00
Overflow tank Griffin KM-101
Transmission radiator integrated cooler
ENGINE FRONT DRIVE ACCESSORIES
Manufacturer Holley 20-185 integrated system
Alternator Holley 197-302 150 amp
A/C refrigerant pump Sanden SD7 (compact)
Power steering pump Holley 198-101 with cast iron reservoir
Belt configuration serpentine with tensioners
DRIVETRAIN
Transmission type 4-speed electronic automatic
Transmission manufacturer General Motors
Transmission model 4L65E
Differential type posi-traction (Powr-Lok)
Rear axle ratio 3.54
First gear ratio 3.06
Second gear ratio 1.63
Third gear ratio 1.00
Fourth gear ratio 0.70
Shifter type electronic push button
Shifter manufacturer (model) Powertrain Control Systems (GSM)
Sport mode A/B rocker switch – customized profile
BRAKES
Type four-wheel disc brakes with vacuum servo booster
Servo type Jaguar XJ6 Series 3 type
Rotors EBC non-vented front and rear
Brake pads EBC Green Stuff front and rear
Brake lines Federal Hill Cunifer custom
SUSPENSION and STEERING
Steering column IDIDIT with integrated controls
Steering type rack and pinion XJ6 Series 3 short tower version
Steering turns 3.25 lock-to-lock
Steering wheel Mota-Lita Eagle 4 wood rim 14" – horn boss
Front suspension type independent coil springs
Front spring rate 400 lbs per inch
Front spring max travel 4.73"
Anti-roll bar heavy duty replacement
Rear suspension type coilover quad shocks
Front wheel alignment 1/16 to 1/8" toe-in
Camber front 0.50º ± 0.25º positive
Camber rear 0.75º ± 0.25º negative
Castor 2.25º ± 0.25º
FUEL SYSTEM
Fuel tank custom aluminum mounted in spare tire hold
Pump configuration – model in-tank – Aeromotive Stealth 340
Fuel level sender 240 (empty) to 33 (full) ohms
Filters 10 micron external and in-tank sock style
Pressure regulator Aeromotive 13109 EFI bypass
Pressure gauge 0 to 100 PSI Aeromotive 15633 LS3 mount
Fuel line 3/8" (matches 3/8" NPT and -6AN fittings)
ELECTRICAL
Voltage operating 12 VDC
Battery orientation negative ground with cutoff switch
Battery brand and group Optima
Keyless ignition S2000 push button with illumination
CAN bus Infinitybox Mastercell 5v control circuit
Power modules Infinitybox Powercell and inMOTION
Remote control Infinitybox inLINK
Engine and transmission harness General Motors
Electronic shifter harness GSM
LIGHTS
LED front and rear markers BA9s amber front/red rear
LED license plate light (bumper mounted) festoon
LED boot light mercury tilt switch activated
LED front & rear turn signals BA15s
LED reverse light festoon 42mm
LED rear brake & tail light BAY15D dual function
LED interior center console end light Grote G6261 chrome
LED interior under seat OPT7 Aura programmable strips
Headlamps Hella H1 and H4
Fog lights exterior mount type
FLUID CAPACITIES
Engine oil capacity 8.9 quarts
Coolant engine capacity 11.2 quarts
Coolant total capacity ~12 qts radiator and surge tank
Transmission oil 14 qts (maximum with torque converter)
Differential oil 3.25 pts
Petrol tank type custom aluminum
Fuel capacity 22 gal
Recommended fuel premium
DIMENSIONS and CHARACTERISTICS (inches unless noted)
Length overall 189.50
Width overall 69.75
Height overall 56.88
Wheelbase 108.88
Front track 58.00
Rear track 58.33
Ground clearance (minimum) 6
Turning circle between walls 40 ft
Turning circle between curbs 36 ft
Drag (Cd estimated by a-c) 0.46 coefficient
Frontal area (A estimated by a-c) 3302 sq in
Drag area (CdA estimated by a-c) 1516 sq in
Trunk capacity (before modification) 17 cu ft
PRESSURES and WEIGHTS
Front tire pressure see mfg recommendations
Rear tire pressure see mft recommendations
Oil pressure minimum hot 24 PSI @ 1000 RPM
Fuel pump pressure range 58 PSI
Curb weight reduced 145 lbs to 3560 lbs due to LS3
CLIMATE CONTROL
Type integrated heating and cooling HVAC
Brand and model Vintage Air Gen II ComPac
Vents dash center and sides – top defrost – bottom heat
Fresh air vents 3D printed louvers in foot box housings
Refrigerant type R134a
Refrigerant capacity 1.8 lbs
ACCESSORIES
USB port Tesla dual outlets with voltmeter
Head unit Pioneer AVH-3400NEX 1-DIN receiver
Video display 7" WVGA flip-up with adjustable tilt angle
Smart phone integration 3D printed custom USB port to Pioneer head unit
Antenna hidden
Front speakers and tweeters Pioneer TS-A1306C 5.25"
Tweeter dash mounts 3D printed custom inserts
Rear speakers Pioneer TS-A1376R 5.25"
Subwoofer (trunk location) Pioneer TS-WX130DA
Subwoofer control (center console) 3d printed custom housing
Interior lighting control center console programmable
Microphone integrated with Pioneer AVH-3400NEX
Voice commands via iPhone with Siri application
Navigation via iPhone
Backup camera Pioneer ND-BC8
Communications calls-message-voice commands via iPhone
Body color Porsche Lapis Blue
Power door locks Infinitybox inMOTION CAN bux
Power windows Infinitybox inMOTION CAN bus
Power truck lock opener Infinitybox Powercell CAN bus
Tread plates stainless steel door sills with etched logo
INSTRUMENTATION and CONTROLS
Instrumentation Dakota Digital HDX-2018 combo
Climate control Dakota Digital DCC 2300
Washer/wiper 22mm LED push button momentary/rotary switch
Headlights/fog lights 22mm LED rotary switch
External lights 22mm LED push button
Internal lights 22mm LED push button
Backlight demist 22mm LED push button
PERFORMANCE
Power-to-weight ratio 8.3 (versus 7.3 Corvette)
Efficiency 18 city/29 highway (estimated)
Maximum range 600 miles (estimated highway)
Acceleration
Maximum speed (sustained) 150 MPH (estimated)
WHEELS and TIRES
Type aluminum alloy 15×6"
Brand Kent reproduction
Tire size 205/70 R15 or 215/70 R15
INTERIOR
Upholstery kit John Skinner Manufacturing (UK)
Color New Tan with beige headliner/black boot
Insulation CLD – MLV – CCF – heat barrier
Window sweeps & channels flocked rubber
Fixed windows Everseal 3/16" glass seal with flocked channel
Materials leather – vinyl – wool carpet – moquette
Seat belts push button style
Underdash custom vinyl covered aluminum
VEHICLE IDENTIFICATION and SECURITY
VIN number IL65224
VIN plate updated – driver side engine bay
Differential type ID tag attached to casing bolt
Keys fuel caps – doors – trunk
Spare key driver side of front engine bay
Alarm keyless entry push button start with power shutoff
Open door warning lights and/or ignition on
Seat belt warning integrated with HDX
OTHER MODIFICATIONS
Hood release lever moved to left (driver) side
Fuel covers right fill tube; left battery cutoff switch
Anti-sway bar heavy duty 1" diameter
Heat shield reflective aluminum foil
Hood vent closed off from cabin for HVAC fitment
Firewall fans removed; harness pass-through driver side
Rear inboard brakes remote bleeder system
License plate lens customized with "Kriss Motors" engraving
INCIDENTALS
Jaguar factory tool kit tool roll tie-down in spare tire hold 💡
Jaguar Owners Manual custom printed version