Holden V8 252-308 1970-1988

| Cam Part No. | Cam & Lifter Set Part No. | Duration IN |
Advertised EX |
Duration IN |
@.050" EX |
Valve w/1.60 IN |
Lift Rockers EX |
Lobe Separation Angle | Intake Centerline | Valve IN |
Lash EX |
Notes |
| 660931-10 | NA | 267 | 267 | 213 | 213 | .480 | .480 | 110 | 106 | Hyd. | Hyd. | 1 |
| 2000-4800 | Smooth idle, Street Performance, Towing, fuel economy. | |||||||||||
| 661211-12 | NA | 269 | 275 | 215 | 221 | .485 | .475 | 112 | 108 | Hyd. | Hyd. | 1 |
| 2000-5000 | Strong low & mid-range torque & horsepower. | |||||||||||
| 660991-08 | NA | 275 | 275 | 221 | 221 | .501 | .501 | 108 | 104 | Hyd. | Hyd. | 1 |
| 2200-5600 | Mild idle, Good low & mid-range horsepower. 9.5:1 CR, good exhaust & intake. | |||||||||||
| 660651-10 | NA | 277 | 285 | 223 | 231 | .496 | .501 | 110 | 106 | Hyd. | Hyd. | 1 |
| 2600-5700 | Fair idle, Strong mid range & top end. 9.5-10.5:1, 2800+ stall & gears. | |||||||||||
| 660011-10 | NA | 279 | 279 | 225 | 225 | .496 | .496 | 110 | 106 | Hyd. | Hyd. | 1 |
| 2600-5800 | Fair idle, Nice single pattern cam. Hot Street/Strip performance. | |||||||||||
| 660961-10 | NA | 285 | 285 | 231 | 231 | .501 | .501 | 110 | 106 | Hyd. | Hyd. | 1 |
| 2800-5800 | Fair idle, Street/Strip, strong mid-range torque & horsepower. | |||||||||||
| 661751-08 | NA | 289 | 299 | 235 | 245 | .520 | .544 | 108 | 104 | Hyd. | Hyd. | 1 |
| 2800-6000 | Lopey idle, Serious Street/Strip. Needs 3200+ stall, header & gears. | |||||||||||
| 660971-10 | NA | 289 | 289 | 235 | 235 | .501 | .501 | 110 | 106 | Hyd. | Hyd. | 1 |
| 3000-6100 | Lopey idle, Hot Street/Strip, strong mid-range torque & horsepower. 3200+ stall. | |||||||||||
| 660841-10 | NA | 291 | 291 | 237 | 237 | .520 | .520 | 110 | 106 | Hyd. | Hyd. | 1 |
| 3000-6400 | Rough idle, Street/Strip, strong mid range & top end power. 3500+ stall, 10.0:1+ CR. | |||||||||||
| 661731-08 | NA | 291 | 297 | 237 | 243 | .520 | .541 | 108 | 104 | Hyd. | Hyd. | 1 |
| 3000-6600 | Rough idle, Hot Street/Strip. Good mid range & top end performance. 10.5:1+ CR. | |||||||||||
| 661811-08 | NA | 297 | 297 | 243 | 243 | .541 | .541 | 108 | 104 | Hyd. | Hyd. | 1 |
| 3400-6700 | Rough idle, Hot Street/Bracket, Nice upper mid range & top end. | |||||||||||
| 661951-08 | NA | 307 | 307 | 253 | 253 | .565 | .565 | 108 | 104 | Hyd. | Hyd. | 1 |
| 3600-6800 | Rough idle, Hot Street/Strip, great mid range to top end performance. 11.0:1+ CR, 3500+. | |||||||||||
| 669991 | NA | Custom Grind Camshaft Hydraulic Flat Tappet Special Order Camshaft. |
Hyd. | Hyd. | 1 | |||||||
Howard Cams, always synonymous with high performance camshafts and valve train innovation, our comments have been top fuel favorites since the early days of drag racing and the basic timing of Howards blown alcohol cams is still used today. All Howards™ Cams use the highest-grade race quality billets available. All hydraulic and mechanical flat tappet camshafts are 100% Rockwell checked and Parkerized to ensure the highest quality control standards available anywhere. Howards™ Cams are manufactured on dedicated high precision cam grinding machines. All Howards™ Cams are packaged and shipped in our unique, hard, high impact plastic reusable cases. This ensures that the high quality camshaft that went into the case comes out in the same condition, when delivered, as when it was packed.

| Cam Part No. | Cam & Lifter Set Part No. | Duration IN |
Advertised EX |
Duration IN |
@.050" EX |
Valve w/1.60 IN |
Lift Rockers EX |
Lobe Separation Angle | Intake Centerline | Valve IN |
Lash EX |
Notes |
| 661442-10 | NA | 271 | 279 | 236 | 244 | .512 | .512 | 110 | 106 | .022 | .022 | 1 |
| 2600-5600 | Mild lopey idle, Street Performance, broad mid range power band. 3200+ stall, 9.5:1 CR. | |||||||||||
| 660102-09 | NA | 275 | 281 | 240 | 246 | .539 | .549 | 109 | 105 | .022 | .022 | 1 |
| 2800-5800 | Hot Street/Bracket. Needs 10.0+ CR, 3200+ stall & gears. | |||||||||||
| 662352-08 | NA | 281 | 287 | 246 | 252 | .555 | .565 | 108 | 104 | .022 | .022 | 1 |
| 3200-6100 | Hot Street/Bracket, good mid-range performance. | |||||||||||
| 660822-06 | NA | 287 | 295 | 252 | 260 | .581 | .592 | 106 | 102 | .022 | .022 | 1 |
| 3400-6500 | Rough idle, Pro Street/Strip. Great mid range torque & power. 10.0:1+ CR. | |||||||||||
| 660822-08 | NA | 287 | 295 | 252 | 260 | .581 | .592 | 108 | 104 | .016 | .016 | 1 |
| 3400-6600 | Rough idle, Street/Strip, good mid range with strong top end performance. 10.0:1+ CR. | |||||||||||
| 661772-06 | NA | 295 | 301 | 260 | 266 | .603 | .592 | 106 | 102 | .022 | .022 | 1 |
| 3800-7000 | Pro Street/Serious Competition. Great mid range to top end power. | |||||||||||
| 661772-08 | NA | 295 | 301 | 260 | 266 | .603 | .592 | 108 | 104 | .022 | .022 | 1 |
| 3800-7000 | Pro Street/Competition. Good mid & upper end performance. 4000+ stall. | |||||||||||
| 669992 | NA | Custom Grind Camshaft Mechanical Flat Tappet Special Order Camshaft. |
1 | |||||||||
Howard Cams, always synonymous with high performance camshafts and valve train innovation, our comments have been top fuel favorites since the early days of drag racing and the basic timing of Howards blown alcohol cams is still used today. All Howards™ Cams use the highest-grade race quality billets available. All hydraulic and mechanical flat tappet camshafts are 100% Rockwell checked and Parkerized to ensure the highest quality control standards available anywhere. Howards™ Cams are manufactured on dedicated high precision cam grinding machines. All Howards™ Cams are packaged and shipped in our unique, hard, high impact plastic reusable cases. This ensures that the high quality camshaft that went into the case comes out in the same condition, when delivered, as when it was packed.



