Manufacturer:	Porsche					Class: B
Model:		356A/1500GS, 1500GT "Carrerra"
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DESCRIPTION:
	Steel Coupe and Roadster
	(Some have aluminum doors and deck lids)
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ENGINE:	Type ..............	4 cyl opposed - 4 ohc
	Bore & stroke .....	3.35" x 2.59"
	Capacity ..........	1498 cc
	Comp ratio ........	9:1, 10:1
	Head material .....	Aluminum Alloy
	Port size .........	Intake 45mm (1.772"), Exhaust 38mm (1.495")
	Piston material ...	Aluminum Alloy
	Piston weight .....	17.07 oz (with rings)
	Timing data:		(Intake cam lobe: 0.505")
		Intake ....	Open 38° BTDC, Close 78° ABDC
		Exhaust ...	Open 78° BBDC, Close 38° ATDC
	Valve lift: .......	
	Valve head dia:
		Intake ....	1.89"
		Exhaust ...	1.615"
	Valve spring ......	Outer 84 lb @ 1.062" (37Kg @ 27.0mm), +/-10%
				Inner 58 lb @ 1.000" (26Kg @ 25.4mm), +/-10%
	Carburation .......	Two Solex 40PJJ
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TRANSMISSION AND DRIVE TRAIN:
	Ratios:	
		1	11.34	13.33	11.35
		2	17.30	16.31	18.29
		3	22.27	24.25	23.26
		4	25.24	26.23	27.22
		5
	Final drive ratios: 4.428(31/7), 4.857(34/7), 5.167(31/6)
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CHASSIS
	Wheelbase ...................	82.7"
	Track dimension, front ......	51.4"
	Track dimension, rear .......	50.1"
	Shock absorber ..............	Telescopic
	Steering ratio ..............	16:1
	Brakes ......................	
	Tire size ...................	5.90 x 15
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APPROVED OPTIONAL EQUIPMENT
	Carburator velocity stacks
	Two Solex 40PJJ-4 Carburators
	6V or 12V electrical system
	Compensating spring (rear axle)
	Two Weber 40 DCM, DCM1, DCM2 Carburators
	Ventilated brake backing plates
	80 Litre fuel tank
	Induction venturi
	Bucket sports seats
	Center-lock wheels
	Stabilizer-16mm
	Sodium-cooled intake valves
	Limited-slip differential
	Light-weight wheels

	Note: Flywheel weight -
		14.0 lbs
		(7.71 lb in Roller-crank engines)
		(17.0 lb in Plain bearing engines)