Chaparral 1 group P (1961)

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Source

Specifications

5 units built
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Chevrolet Small Block gen. I 283 resized to 317ci by Traco, V8 (90º) cyl, 4 stroke, petrol engine
5205cc
98.3 x 85.7 mm
300-350 bhp / 224 KW @ 6,500 rpm
cast-iron block and head
OHV, 2 valves / cyl - 16 valves total
aspiration, natural with 2 x triple Stromberg Carburetors on Edelbrock inlet manifold
4" exhaust tubes
Aluminium flywheel using Schiefer dry clutch 10.5" diameter
Borg-Warner aluminium T-10, 4 speed Manual gearbox
Halibrand differential with Mercury ring and pinion
1¼-inch diameter steel chrome molybdenum tubular spaceframe, aluminium bodyshell
Front suspension, double unequal wishbones, coil springs over Monroe dampers, anti-roll bar
Rear suspension, reverse lower A-arms, single top link, twin trailing arms, coil springs over Monroe dampers, anti-roll bar
rack-and-pinion steering
cast iron discs brakes, with front 10.5" diameter and rear 10" diameter, using Girling calipers
Length, 3,886 mm (153 in)
Width, 1,575 mm (62 in)
Height, 787 mm (31 in)
Wheelbase, 2,235 mm (88 in)
Track (fr/r), 1,270 mm (50 in) / 1,270 mm (50 in)
wheels, 6" - 8" x 15"
tires, Goodyear "Blue Streak"
670kg

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Results in WSCC

1962Season races for Sports/Prototypes

Car entry, chassis number	Car number/ result
	Dayt	Sebring	Targa Florio	Nurb	Le Man	d' Auvergne	Bridgeh
Team	3h	12h		1000km	24h		400km
Chaparral Cars Inc, 1-001	#66, 3rd	#11, steering
Chaparral Cars Inc, 1-002	#0, 6th						#1, in entry list*
Chaparral Cars Inc, 1-003		#10, 6th
Total points 18	13	5
Statistics
Works Starts/finishes 4/3	2/2	2/1
Drivers	Team entries and car number
Chaparral Cars Inc
Jim Hall	66	10
Dick Rathmann	0
Harry Heuer	0						1
Hap Sharp		10
Ronnie Hissom		10
Chuck Daigh		10, 11
Chuck Hall		11

*Peter Hand Brewery entry

1963Season races for Prototypes 2.0+

Car entry, chassis number	Car number/ result
	Sebring	Targa Florio	Nurb	Rossfeld	Le Man	d' Auvergne	Freiburg	Ollon
Team	12h		1000km	Hill climb	24h		Hill climb	Hill climb
Chaparral Cars, 1-003	#9, eng ine
Chaparral Cars, 1-001	#10, diffe rential
Total points 3
Statistics
Works Starts/finishes 2/0	2/0
Drivers	Team entries and car number
Chaparral Cars
Jim Hall	9
Hap Sharp	9, 10
Bob Donner	10
Ronnie Hissom	10

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Source
Source
Source
Edelbrock inlet manifold