Ford SB 221-302 1963-1995, 351W 1969-1993
Advertised Duration: 270/278
Duration @ .050": 217/225
Valve Lift: .528/.533
Lobe Separation Angle: 112
Lifters Included: No
1200-5600. Small Base Circle, Good rough idle. Good torque & power. 1800+ stall.

Ford SB 221-302 1963-1995, 351W 1969-1993
Adv. Duration: 272/272
Duration @ .050": 219/219
Lift: .544/.544
Lobe Separation: 110 LC
Lifters Included: No

1200-5600. Small Base Circle, Fair idle, strong Street Performance. Requires 9.0+ CR, 5-speed or 2800+ stall.

Ford SB 221-302 1963-1995, 351W 1969-1993
Adv. Duration: 288/294
Duration @ .050": 235/241
Lift: .581/.581
Lobe Separation: 110 LC
Includes Lifters: No
2400-6400. Small Base Circle, Lopey idle, hot street & bracket racing. 10.0:1-up CR advised.

Ford SB 221-302 1963-1995, 351W 1969-1993
Adv. Duration: 288/294
Duration @ .050": 235/241
Lift: .581/.581
Lobe Separation: 112 LC
Includes Lifters: No
2400-6400. Small Base Circle, Lopey idle, hot street & bracket racing. 10.0:1-up CR advised.

Ford SB 221-302 1963-1995, 351W 1969-1993
Adv. Duration: 278/278
Duration @ .050": 225/225
Lift: .533/.533
Lobe Separation: 112 LC
Includes Lifters: No
2000-6000. Small Base Circle, Best with 5-speed or 2200-2500 stall.

Ford SB 221-302 1963-1995, 351W 1969-1996
Adv. Duration: 278/284
Duration @ .050": 225/231
Valve Lift: .533/544
Lobe Separation: 108
Included Lifters: No
2000-6200. Noticeable idle, street & mild performance usage. Crisp throttle.

Ford SB 221-302 1963-1995, 351W 1969-1993
Adv. Duration: 278/284
Duration @ .050": 225/231
Valve Lift: .533/544
Lobe Separation: 112
Included Lifters: No
2000-6200. Small Base Circle, Noticeable idle, street & mild performance usage. Crisp throttle.

Ford SB 221-302 1963-1995,  351W 1969-1996
Adv. Duration: 270/270
Duration @ .050": 217/217
Valve Lift: .496/496
Lobe Separation Angle: 113
Included Lifters: No
1500-5500. Small Base Circle, Good idle, strong low end & mid-range performance. Needs 2800+ stall.

Ford SB 221-302 1963-1995, 351W 1969-1996
Adv. Duration: 306/312
Duration @ .050": 253/259
Lift: .640/.640
Lobe Separation: 112 LC
Included Lifters: No
3200-7200. Small Base Circle, Best with big cubic inch. Needs 11.0:1+ CR, good heads.

Ford SB 221-302 1963-1995, 351W 1969-1993
Adv. Duration: 294/300
Duration @ .050": 241/247
Lift: .581/.603
Lobe Separation: 110 LC
Includes Lifters: No
2600-6600. Small Base Circle, Rough idle, Hot Street & Bracket Racing. 10.5:1-up CR advised.

Ford SB 221-302 1963-1995, 351W 1969-1996
Adv. Duration: 300/300
Duration @ .050": 247/247
Lift: .603/.603
Lobe Separation: 110 LC
Included Lifters: No
2600-6600. Small Base Circle, Rough idle, Street/Strip, good mid range performance. 3200+ stall, good intake.

Ford SB 221-302 1963-1995, 351W 1969-1996
Adv. Duration: 300/304
Duration @ .050": 247/251
Lift: .576/.576
Lobe Separation: 110 LC
Includes Lifters: No
2800-6700. Small Base Circle, Hot Street/Brackets. Requires aftermarket heads, 3500+ stall.