Edelbrock 2281 User Manual

CAUTION: Do not use dual valve springs. Use recommended valve
springs with closed pressure of 120-130 lbs., open pressure of
320-340 lbs, and max lift of .700”. Use stock ratio rockers only.

Duration at .004" Lift:

Intake 299° 

Exhaust 302°

Duration at .050" Lift:

Intake 235°

Exhaust 238°

Lift at cam:

Intake .358"

Exhaust .364"

Lift at valve:

Intake .573"

Exhaust .582"

Timing at .050 Lift:

Open

Close

Intake

11° BTDC

44° ABDC

Exhaust

56° BBDC

2° ATDC

Intake Centerline:

107° ATDC

Lobe Separation:

112°

CAUTION: Use Edelbrock Performer-Link Timing Chain and Gear
Set #7811 or 7814, Accu-Drive gear drive #7892, or Hex-A-Just
Timing Set #7335. Do not use late model timing sets 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.

Catalog #2281
Rev.4/07 - RS/mc

©2007 Edelbrock Corporation

Brochure #63-2281C

CAUTION: Do not use dual valve springs. Use recommended valve
springs with closed pressure of 120-130 lbs., open pressure of
320-340 lbs, and max lift of .700”. Use stock ratio rockers only.

Duration at .004" Lift:

Intake 299° 

Exhaust 302°

Duration at .050" Lift:

Intake 235°

Exhaust 238°

Lift at cam:

Intake .358"

Exhaust .364"

Lift at valve:

Intake .573"

Exhaust .582"

Timing at .050 Lift:

Open

Close

Intake

11° BTDC

44° ABDC

Exhaust

56° BBDC

2° ATDC

Intake Centerline:

107° ATDC

Lobe Separation:

112°

CAUTION: Use Edelbrock Performer-Link Timing Chain and Gear
Set #7811 or 7814, Accu-Drive gear drive #7892, or Hex-A-Just
Timing Set #7335. Do not use late model timing sets 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.

Catalog #2281
Rev.4/07 - RS/mc

©2007 Edelbrock Corporation

Brochure #63-2281C

CAUTION: Do not use dual valve springs. Use recommended valve
springs with closed pressure of 120-130 lbs., open pressure of
320-340 lbs, and max lift of .700”. Use stock ratio rockers only.

Duration at .004" Lift:

Intake 299° 

Exhaust 302°

Duration at .050" Lift:

Intake 235°

Exhaust 238°

Lift at cam:

Intake .358"

Exhaust .364"

Lift at valve:

Intake .573"

Exhaust .582"

Timing at .050 Lift:

Open

Close

Intake

11° BTDC

44° ABDC

Exhaust

56° BBDC

2° ATDC

Intake Centerline:

107° ATDC

Lobe Separation:

112°

CAUTION: Use Edelbrock Performer-Link Timing Chain and Gear
Set #7811 or 7814, Accu-Drive gear drive #7892, or Hex-A-Just
Timing Set #7335. Do not use late model timing sets 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.

Catalog #2281
Rev.4/07 - RS/mc

©2007 Edelbrock Corporation

Brochure #63-2281C

CAUTION: Do not use dual valve springs. Use recommended valve
springs with closed pressure of 120-130 lbs., open pressure of
320-340 lbs, and max lift of .700”. Use stock ratio rockers only.

Duration at .004" Lift:

Intake 299° 

Exhaust 302°

Duration at .050" Lift:

Intake 235°

Exhaust 238°

Lift at cam:

Intake .358"

Exhaust .364"

Lift at valve:

Intake .573"

Exhaust .582"

Timing at .050 Lift:

Open

Close

Intake

11° BTDC

44° ABDC

Exhaust

56° BBDC

2° ATDC

Intake Centerline:

107° ATDC

Lobe Separation:

112°

CAUTION: Use Edelbrock Performer-Link Timing Chain and Gear
Set #7811 or 7814, Accu-Drive gear drive #7892, or Hex-A-Just
Timing Set #7335. Do not use late model timing sets 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.

Catalog #2281
Rev.4/07 - RS/mc

©2007 Edelbrock Corporation

Brochure #63-2281C