Iso Grifo A3 Corsa group P (1964)

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1966: Bizzarrini 5300 GT Strada


22 units built (Iso Grifo)
133 units built (Bizzarrini Strada)
Click here and here and here
Click here and here for Bizzarrini Strada

Chevrolet Small Block gen. I 327, V8 (90o) cyl, 4 stroke, petrol engine, located front longitudinally. Click here and here and here
5354cc, 101.6 x 82.55 mm
405 bhp / 302 KW @ 6200 rpm
488 Nm / 360 ft lbs @ 4000 rpm
cast-iron block 229.2mm height, 111.8mm bore spacing, aluminum alloy head
tufftride-hardened forged 1053-steel crankshaft with 5 main bearings 58.4mm diameter
connecting rod length between centers 144.8mm, 50.8mm big end bearing diameter
side camshaft with overhead valves (OHV), 2 valves / cylinder - 16 valves total
aspiration: natural with 4 x Weber 45 DCOE Carburetors
Firing order: 1-8-4-3-6-5-7-2
water cooled
dry sump
Borg-Warner T4 4 speed Manual gearbox
1st: 2.54:1
2nd: 1.92:1
3rd: 1.51:1
4th: 1.10:1
limited slip rear differential, 3.55/1
Aluminum Body over Sheet Steel Semi-Monocoque w/Tubular box-shaped Steel Superstructure chassis
Front suspension unequal length wishbones, coil springs over telescopic dampers, anti-roll bar
Rear suspension DeDion axle, twin radius arms, Watt's linkage, coil springs over telescopic dampers
Burmann recirculating ball steering
discs, all-round, inboard at the rear
Length 4369 mm (172 in)
Width 1730 mm (68.1 in)
Height 1135 mm (44.7 in)
Wheelbase 2451 mm (96.5 in)
Track (fr/r) 1410 mm (55.5 in) / 1435 mm (56.5 in)
wheels, front 7 x 15" in, rear 9 x 15"
tires, front 6.00Lx15 Dunlop R7, rear 7.25Lx15 Dunlop R7

Results in WSCC

Season races for Prototypes
Car entry, chassis number Car number/ result
Sebring Targa Florio Consuma Nurb Rossfeld Le Man Reims Freiburg Tourist Trophy Sierra Montagna Brigde Hampton Paris
Team 12h Hill climb 1000km Hill climb 24h 12h Hill climb Hill climb 500km 1000km
William McLaughlin, B0202 #5, 39th
Giotto Bizzarini, B0201 #138, 19th #14, 21st
Giotto Bizzarini, B0207 #1, 14th #2, valve #74, 10th #15, 11th
Total points
Works Starts/finishes 7/6 1/1 1/1 1/1 1/0 1/1 2/2
Drivers Team entries and car number
William McLaughlin
William McLaughlin 5
Enus Wilson 5
Ed Hugus 5
Giotto Bizzarini
Pierre Noblet 138 1 2 14
Edgar Berney 138 1 2 74 14
Mario Casoni 15
Odoardo Govoni 15

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Bizzarinni 5300 GT '66


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Typical Borg-Warner gearbox

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