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Superformance SPF GT40 - Familiarity Breeds Perfection

Superformance Spf Gt40 Right Superformance Spf Gt40 Front Superformance Spf Gt40 Front
1966 Ford GT 40 Mk II Le Mans WinnerSuperformance GT MKII A
GENERAL
Test weight with 150-lb driver2,8622,550
Race weight, lb2,6822,400
Weight Distribution front/rear, %38/6240/60
Wheelbase, in95.095.2
Track front/rear, in57.0/56.056/59
Overall length, in163.0163
Width (over scoops), in70.070.5
Height, in40.539.5-40.5
Frontal area, sq ft15.815.8
Fuel tank capacity, gal4220
ENGINE
FamilyFord FEFord 351W
N. cyl & typeV-8V-8
Bore x stroke, in4.232 x 3.7844.125 x 4.000
Displacement, cu in427427
Compression ratio10.510.25
Bhp @ rpm485 @ 6,200550 @ 5,600
Torque @ rpm, lb-ft475 @ 4,000535 @ 5,200
Carburetion1 x 4 bblEFI
DRIVE TRAIN
TransaxleFord T-44RBT
Speeds45
Gear ratios, transmission/overall
1st2.22 / 6.182.58 / 9.73
2nd1.43 / 3.961.61 / 6.07
3rd1.19 / 3.301.14 / 4.30
4th1.00 / 2.770.846 / 3.19
5th0.642 / 2.42
Differential ratio3.093.77
Transfer gear ratio0.899
CHASSIS & SUSPENSION
Frame typeSemi-monocoque, sheet steelSemi-monocoque, sheet steel
Brake typeVented disc, single caliperVented disc, single caliper
TiresGoodyear "A"Yokohama Avid
Front9.75-15(250/60-15 approx.)225/60R15 (test)
225/50R15 (opt)
Rear12.8-15
(325/60-15 approx.)
275/60R15 (test)
295/50R15 (opt)
Wheels
Front15x8
Rear15x10
Steering typeRack-and-pinion Rack-and-pinion
Front suspensionIndependent with unequal-length A-arms, coil springs, tube shocks, anti-roll barIndependent, with unequal-length A-arms, coil springs, tube Shocks, anti-roll bar
Rear suspensionIndependent with trailing arms, unequal-length lateral arms, coil springs, tube shocks, anti-roll barIndependent with trailing arms, unequal-length lateral arms, coil springs, tube shocks, anti-roll bar
INSTRUMENTATION
Instruments7,000-rpm tach
oil temperature
water temperature
fuel pressure
ammeter
gearbox oil temperature
8,000-rpm tach
oil pressure
water temperature
oil temperature
fuel level
ammeter
200mph speedometer
Warning lightsdifferential oil pressure
engine oil pressure
high beam
alternator
turn signal
radiator cooling fans
CALCULATED DATA
Engine rpm @ 60 mph19051811
Lb / hp (with driver)5.84.6
SPEED IN GEARS
mph @ rpm
1st89 @ 620053 @ 6400
2nd140 @ 620085 @6400
3rd170 @ 6200120 @ 6400
4th205 @ 6200161 @6400
5th207 @ 6230
ACCELERATION
Time to speed
0-40 mph, sec2.82.1
0-60 mph, sec4.23.7
0-80 mph, sec5.64.8
0-100 mph, sec8.26.9
0-120 mph, sec10.89.2
0-140 mph, sec14.011.8
0-160 mph, sec19.115.3
0-180 mph, sec27.021.7
Time to distance
Quarter mile, sec @ mph12.0 @ 12911.2 @ 135
FUEL ECONOMY
Steady state mpg in top gear
70 mph16.516.0
100 mph15.715.1
150 mph10.19.62
200 mph6.25.9
*Comparison Data from Superformance LLC


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Superformance Spf Gt40 Front Left Superformance Spf Gt40 Interior
Superformance Spf Gt40 Engine Superformance Spf Gt40 Interior
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