Camshaft Comparison

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There are basically four factory camshaft grinds:

• small bore grind
• large bore grind
• performance grind, used in GX, Twin-carb, and EFI engines
• emission grind, used in 1981-1982 USA engines

However, these can be fitted to any engine. The emission grind cam was used in A12A, A14 and A15 engine -- all with same cam part number.

Duration

"Advertised Duration" means you should only compare these numbers with grinds from the same manufacturer. Other vendors may measure it differently.

1974-up

• 13001-H9800 CAMSHAFT [Typical use: 1981-1982 USA]

  244/248 duration

  • USA B310 A14,A15 B310 0880-
  • USA B310 A12A 0880- B310
• 13001-H5700 CAMSHAFT [Typical use: Performance engine]

  248/256 duration .331 lift

  • JPN B210 A12T, A14T
  • JPN B310 A14E, A15E
• 13001-H5000 CAMSHAFT [Typical use: A12S]

  248/248 duration

  • JPN B120 A12S
  • JPN B210 A12S
  • JPN B310 A12S, A13S
  • USA B310 A12A 0879-0780
  • CAN B310 A12A
• 13001-H6200 ASSY-CAMSHAFT [Typical use: A14/A15]

  248/256 duration

  • JPN B210 A14S
  • USA B210 A13, A14
  • USA B210 F10 A14
  • USA B310 A14,A15 -0780
  • JPN B310 A14S, A15S

ADVERTISED DURATION

248/248 duration (standard small bore)

• 13001-H5000

248/256 duration (standard large bore)

• 13001-H6200

256/256 duration (performance engines)

• 13001-H5700 .331 lift

244/248 duration (Late USA emission)

• 13001-H9800

1967-1973

• 13001-H7000 ASSY-CAMSHAFT USA B110 A12 0772- 0 13001-H2300
• 13001-H2300 CAMSHAFT B110 JPN A12 GX
• 13001-H1000 CAMSHAFT B110 USA JPN A12
• 13001-18001 CAMSHAFT B10 JPN A10 0470- replaces 13001-18000 & 13001-H0100
• 13001-18000 CAMSHAFT JPN B10 A10
• 13001-H0100 CAMSHAFT JPN B10 A10

ADVERTISED DURATION

248/248 duration

• 13001-H1000 A12

256/256 duration .331 lift

• 13001-H2300 A12 GX