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V-THUNDER CAMS FOR SHOVELHEAD BIG TWIN 1970-1984
ANDREWS SPORTSTER EVOLUTION CAMS
S&S CAMSHAFTS FOR EVOLUTION SPORTSTER & BUELL
Andrews has a number of performance cam designs for Evolution Sportster engines. All the cams listed will run to 6500 RPM with stock hydraulic lifters. Since the stock lifters are such proven units, we continue to recommend that they not be changed to solids. Andrews Evolution Sportster cams have stock base circle sizes so stock (non-adjustable) pushrods can be used (except for V9 or BV cams). Adjustable aluminum or chrome-moly steel pushrods are also available as shown (fixed length for 1991). The no. 2 (36 teeth) cam drive gear used in models 2000-2022 is not the same as in models 1991-1999.
For this reason separate part numbers are listed for models 2000 to present.
Note: Sportster 1991 engines are considerably different than earlier Evolution Sportsters. Cam gears for earlier Evolution Sportsters will not fit 1991-1999 engines. Models 2000-2022 use a different no. 2 cam drive gear as models 1991-1999. For these reasons different part numbers are listed.
Models 2004 to present have different valve stem diameter and valve springs, installation of cams with more than .515" lift may need different valves, springs and collars.
Instructions
Specifications
V2/N2 CAM KIT
Bolt in cams for stock 883, 1100 or 1200 engines. More duration and lift means extra power thru whole RPM range. Stock springs and hydraulic lifters recommended, Power range 2000 to 6000 RPM.
N3 CAM KIT
The N3 cams are specifically designed as bolt-in cams for use in Sportster 883 and 1200cc 2004-2022 with stock springs, stock hydraulic lifters and heads. Provide extra power thru the entire RPM range.
V4/N4 CAM KIT
Street/Drags, for stock or modified 883, 1100 and 1200 engines. Slightly higher idle speed but stock springs and hydraulic lifters recommended. Power range 2000 to 6000 RPM.
V6/N6 CAM KIT
Modified 1200 engines up to 80CI (1340cc). Stock springs and hydraulic lifters recommended. Power range 2500 to 6500 RPM.
V8/N8 CAM KIT
Cams for modified 1100-1200, and stroked 883's with stock springs and hydraulic lifters. Same intake cam as N4 but more exhaust cam duration. Gives great mid-range power. Power range 2000 to 6000 RPM.
The following two grinds were originally designed for the Iron Sportster, Andrews altered the lobes shapes with the correct timing for the different roller diameter and rocker ratio. They are proven cam designs and produce lots of usable power for larger Evolution Sportster engines.
V9/N9 CAM KIT
Medium lift cams for stroked engines from 80 to 88CI. Broad torque range to 6000+ RPM with hydraulic lifters, Andrews springs collars and pushrods required (Models 1991 to present need long pushrods).
BV/NV CAM KIT
High lift cams for 88CI and larger motors. Andrews pushrods, high lift springs and collars required. BV cams are easy starting and run strong from 2000 to 6000+ RPM with stock hydraulics (models 1991 to present need long pushrods).
| Grind | Open | Close | Duration @ .053" Lift | Valve lift |
| V2/N2 | ||||
| Intake | 22° | 38° | 240° | .465" |
| Exhaust | 46° | 18° | 244° | .440" |
| N3 | ||||
| Intake | 17° | 33° | 230° | .465" |
| Exhaust | 43° | 11° | 234° | .482" |
| V4/N4 | ||||
| Intake | 30° | 46° | 256° | .490" |
| Exhaust | 52° | 24° | 256° | .490" |
| V6/N6 | ||||
| Intake | 34° | 50° | 264° | .490" |
| Exhaust | 56° | 28° | 264° | .490" |
| V8/N8 | ||||
| Intake | 32° | 44° | 256° | .490" |
| Exhaust | 56° | 28° | 264° | .490" |
| V9/N9 | ||||
| Intake | 33° | 53° | 266° | .555" |
| Exhaust | 53° | 33° | 266° | .555" |
| BV/NV | ||||
| Intake | 35° | 59° | 274° | .590" |
| Exhaust | 59° | 35° | 274° | .590" |
Recommended Retail Prices include 25.00% sales tax.
Prices exclude shipping and installation.
Prices are based on EUR to NOK interbank rates obtained daily. The interbank rate is the rate that banks trade currency to each other. These prices must be used as a guide.