ENGINE PRO PERFORMANCE CAMS FOR AUTOS AND LIGHT TRUCKS
CAMSHAFT RANGE & SELECTION CHART
NEED A GOOD TORqUE CAM?
SEE INDIVIDUAL LISTINGS FOR MORE INFORMATION
LOOK FOR THIS ICON IN THE LISTINGS
STAGE 1
CHARACTERISTICS
RECOMMENDATIONS
IDLE QUALITY:
SMOOTH STOCK
TOWING:
GOOD FOR PULLING HEAVY LOADS
TORQUE:
IMPROVED LOW END,
RACING:
NOT RECOMMENDED
1600-2000 RPM
COMPUTER
MODIFICATIONS NOT NEEDED
FUEL ECONOMY: VERY GOOD
CONTROLLED
VEHICLES:
TRANSMISSION:
STOCK AUTOMATIC OR MANUAL
DURATION @ .050'':
COMPRESSION
UP TO 200 HYDRAULIC
RATIO:
9.0:1 OR LESS
STAGE 2
CHARACTERISTICS
RECOMMENDATIONS
IDLE QUALITY:
SMOOTH
TOWING:
GOOD FOR LIGHT PULLING AND RV USE
TORQUE:
GOOD LOW AND MID-RANGES
RACING:
NOT RECOMMENDED
1800-2600 RPM
COMPUTER
MODIFICATIONS MAY BE NEEDED
FUEL ECONOMY: GOOD
CONTROLLED
VEHICLES:
TRANSMISSION:
STOCK AUTOMATIC OR MANUAL
DURATION @ .050'':
COMPRESSION
9.5:1 OR LESSSR
200-215 HYDRAULIC
RATIO
STAGE 3
CHARACTERISTICS
RECOMMENDATIONS
IDLE QUALITY:
FAIR WITH SOME LOPE
TOWING:
NOT RECOMMENDED
TORQUE:
MID-RANGE 2400-3200 RPM
RACING:
MILD BRACKET RACING
FUEL ECONOMY: FAIR
COMPUTER
MODIFIED COMPUTER CHIP MAY BE REQUIRED TO
CONTROLLED
COMPENSATE FOR LOW VACUUM
VEHICLES:
TRANSMISSION: STOCK AUTOMATIC OR MANUAL
DURATION @ .050'':
COMPRESSION
10.3:1 OR LESS. CHECK VALVE TO PISTON CLEARANCE
210-225 HYDRAULIC
RATIO:
STAGE 4
CHARACTERISTICS
RECOMMENDATIONS
IDLE QUALITY:
ROUGH. MANIFOLD VACUUM
TOWING:
NOT RECOMMENDED
WILL NOT OPERATE POWER
BRAKES
RACING:
BRACKET DRAG RACING, LIMITED OVAL TRACK
TORQUE:
MID-RANGE 3000-4000 RPM
COMPUTER
NOT RECOMMENDED
CONTROLLED
FUEL ECONOMY: POOR
VEHICLES:
TRANSMISSION:
AUTOMATIC WITH HIGH STALL CONVERTER OR MANUAL
COMPRESSION
10.5:1 TO 11.0:1. CHECK VALVE TO PISTON CLEARANCE
DURATION @ .050'':
RATIO:
225-240 HYDRAULIC
STAGE 5
CHARACTERISTICS
RECOMMENDATIONS
IDLE QUALITY:
ROUGH WITH HEAVY LOPE.
TOWING:
NOT RECOMMENDED
WILL NOT OPERATE POWER
BRAKES
RACING:
BRACKET DRAG RACING, OVAL TRACK
TORQUE:
MID TO HIGH RANGES
COMPUTER
NOT RECOMMENDED
3800-5000 RPM
CONTROLLED
VEHICLES:
FUEL ECONOMY: POOR
TRANSMISSION:
AUTOMATIC WITH HIGH STALL CONVERTER OR
HEAVY DUTY MANUAL
DURATION @ .050'':
240-255 HYDRAULIC
COMPRESSION
10.5:1 TO 12.0:1. CHECK VALVE TO PISTON CLEARANCE
250-265 MECHANICAL
RATIO:
THESE ARE GENERAL GUIDELINES. TO ACHIEVE BEST PERFORMANCE, MATCH CARBURETION, INTAKE MANIFOLD, IGNITION AND HEADERS TO THE CAMSHAFT.
NEW NUMBERS SHOWN IN BOLD FACE TYPE
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