For big engines (96+ cubic inches) or highly modified smaller motors and running compression ratios of 10.5 or higher, Andrews Products has high lift cams available which will put more usable power at the rear wheel than anything else going. These grinds are specially designed for highly modified motors.
Installation requires expert knowledge and machining capability!
Evolution 80 Cams (Rocker ratio = 1.63)
| Part # | Grind | Timing (*) |
Duration |
Valve Lift |
Lift @ TDC |
Springs | Application | |
| 0.053 | 0.020 | |||||||
| 291581 | EV81 | 32/60 | 272 | 306 | 0.610 | 0.262 | Hi-Lift | For 80-88 inches, 10.5+ CR, head work. Broad nose, quick ramps for wide torque band. 6500+ RPM. |
| 66/30 | 276 | 310 | 0.610 | 0.244 | 160 lbs. | |||
| 291584 | EV84 | 32/64 | 276 | 310 | 0.640 | 0.269 | Hi-Lift | Quick ramps, broad nose type design means more power for 90-100 inch motors. 6500+ RPM. |
| 70/30 | 280 | 314 | 0.640 | 0.246 | 160 lbs. | |||
| 291588 | EV88 | 34/70 | 284 | 318 | 0.680 | 0.288 | Hi-Lift | Same as above but more stuff for 100+ inch motors. Expert installation knowledge required. 6500+ RPM. |
| 76/32 | 288 | 322 | 0.680 | 0.264 | 160 lbs. | |||
|
(*) Timing @ .053 cam lift. |
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Evolution Sportster Cams (Rocker ratio = 1.63)
| Part # | Grind | Timing (*) |
Duration |
Valve Lift |
Lift @ TDC |
Springs | Application | |
| 0.053 | 0.020 | |||||||
| 298880 ('86) | V80 | 32/60 | 272 | 306 | 0.600 | 0.264 | Hi-Lift | .600 Lift for Sportsters with 10.5+ CR and head flow work will pull strong to 6500+ RPM. 61-77 inches. |
| 298885 ('91) | N80 | 66/30 | 276 | 310 | 0.600 | 0.244 | 160 lbs. | |
| 298830 ('86) | V83 | 32/64 | 276 | 310 | 0.630 | 0.267 | Hi-Lift | For 80-96 inch motors with head work and 10.5+ compression. Quick ramps for 6500+ RPM. |
| 298835 ('91) | N83 | 70/30 | 280 | 314 | 0.630 | 0.248 | 160 lbs. | |
| 298870 ('86) | V87 | 34/70 | 284 | 318 | 0.670 | 0.283 | Hi-Lift | Still more stuff for 100+ cubic inches. Quick ramp, broad tip design will pull strong to 6500+ RPM. |
| 298875 ('91) | N87 | 76/32 | 288 | 322 | 0.670 | 0.269 | 160 lbs. | |
|
(*) Timing @ .053 cam lift. |
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Shovelhead Cams (Rocker ratio = 1.43)
| Part # | Grind | Timing (*) |
Duration |
Valve Lift |
Lift @ TDC |
Springs | Application | |
| 0.053 | 0.020 | |||||||
| 212823 ('70) | S82 | 32/60 | 272 | 306 | 0.590 | 0.237 | Hi-Lift | 74-84 inch Shovels with 10.5+ CR. New design technique for wide, strong power band. 6500+ RPM. |
| 212825 ('78) | 66/30 | 276 | 310 | 0.590 | 0.220 | 160 lbs. | ||
| 212834 ('70) | S84 | 32/64 | 276 | 310 | 0.630 | 0.241 | Hi-Lift | Shovels: 84-96 inches, 10.5+ pistons and head flow work for maximum HP in these larger engines. 6500+ RPM. |
| 212836 ('78) | 70/30 | 280 | 314 | 0.630 | 0.223 | 160 lbs. | ||
| 212855 ('70) | S86 | 34/70 | 284 | 318 | 0.660 | 0.254 | Hi-Lift | 100+ inch Shovels will benefit most from this quick ramp design. Broad power band to 6500+ RPM. |
| 212857 ('78) | 76/32 | 288 | 322 | 0.660 | 0.235 | 160 lbs. | ||
|
(*) Timing @ .053 cam lift. |
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ANDREWS PRODUCTS, INC.
431 Kingston Ct., Mt. Prospect, IL 60056
Phone 847-759-0190 Fax 847-759-0848
andrewsproducts.com