#2157

ENGINE: PONTIAC 350-455 V8
RPM RANGE: 1500-5500

Duration at 0.006" Lift:	Intake: 278°	Exhaust: 288°
Duration at 0.050" Lift:	Intake: 204°	Exhaust: 214°
Lift at Cam:	Intake: 0.280"	Exhaust: 0.295"
Lift at Valve:	Intake: 0.420"	Exhaust: 0.442"
Timing at 0.050" lift:	Open	Close
Intake:	3° ATDC	27° ABDC
Exhaust:	42° BBDC	8° BTDC
Centerlines:	Lobe Separation - 110°	Intake Centerline - 105°

CAUTION: Use Edelbrock Performer-Link Timing Chain and Gear Set #7812. Do not use late model timing chain and gear sets that are designed for emission-controlled engines. These timing sets are machined in a retarded position and are not recommended for this camshaft installation. Edelbrock Timing Sets feature three keyways for specified timing selection. Use "0" position for most applications.

Do not use high pressure valve springs.Use only recommended Edelbrock Sure Seat Valve Springs #5857 (non-rotators). Use stock ratio rocker arms only.

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#7157

ENGINE: PONTIAC 350-455 V8
RPM RANGE: 1500-6500

Duration at 0.006" Lift:	Intake: 308°	Exhaust: 320°
Duration at 0.050" Lift:	Intake: 231°	Exhaust: 240°
Lift at Cam:	Intake: 0.313"	Exhaust: 0.313"
Lift at Valve:	Intake: 0.470"	Exhaust: 0.470"
Timing at 0.050" lift:	Open	Close
Intake:	3° BTDC	48° ABDC
Exhaust:	54° BBDC	6° ATDC
Centerlines:	Lobe Separation - 113.5°	Intake Centerline - 112°

Note: Adjustable pushrods or rocker arms required.

CAUTION: Use Edelbrock Performer-Link Timing Chain and Gear Set #7812. Do not use late model timing chain & gear sets that are designed for emission-controlled engines. These timing sets are machined in a retarded position and are not recommended for this camshaft installation. Edelbrock Timing Sets feature three keyways for specified timing selection. Use "0" position for most applications

Do not use dual valve springs.Use only recommended Edelbrock Sure Seat Valve Springs #5757. Use stock ratio rocker arms only.

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#5057

ENGINE: PONTIAC 350-455 V8
RPM RANGE: 2500-6500

Duration at 0.006" Lift:	Intake: 298°	Exhaust: 304°
Duration at 0.050" Lift:	Intake: 224°	Exhaust: 234°
Lift at Cam:	Intake: 0.310"	Exhaust: 0.325"
Lift at Valve:	Intake: 0.465"	Exhaust: 0.488"
Timing at 0.050" lift:	Open	Close
Intake:	3° BTDC	41° ABDC
Exhaust:	56° BBDC	2° BTDC
Centerlines:	Lobe Separation - 114°	Intake Centerline - 109°

Note: Adjustable pushrods or rocker arms required.

CAUTION: Use Edelbrock Performer-Link Timing Chain and Gear Set #7812. Do not use late model timing chain & gear sets that are designed for emission-controlled engines. These timing sets are machined in a retarded position and are not recommended for this camshaft installation. Edelbrock Timing Sets feature three keyways for specified timing selection. Use "0" position for most applications.

Do not use dual valve springs. Use only recommended Edelbrock Sure Seat Valve Springs #5757. Use stock ratio rocker arms only.

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