It seems amazing, but there are still a lot of Knuckle engines going strong. Some of them have been around for more than 50 years! How many other bikes can make this kind of claim for long life and durability. Rocker ratio for all Knuckle heads is 1 to 1.
| Part # | Grind | Timing(*) |
Duration |
Valve Lift |
Lift @ TDC |
Springs | Application | |
| 0.053 | 0.020 | |||||||
| 212965 | N | 13/41 | 234 | 270 | 0.348 | 0.089 | Stock | Stock Knuckle replacement cam. For stock motors and restorations, this is the cam to use. |
| 44/16 | 240 | 276 | 0.348 | 0.105 | ||||
| 212970 | S | 27/55 | 262 | 308 | .0370 | 0.130 | Stock | Bolt-in Knuckle performance cam for stock motors; smooth idle, strong pull to 6000 RPM. This cam is the Knuckle equivalent of a "B" cam in a shovel motor. |
| 55/27 | 262 | 308 | .0370 | .0130 | ||||
| 212980 | K | 35/63 | 278 | 318 | 0.368 | 0.156 | Hi-lift | Knuckle performance cam for stroked motors; strong pull to 6000 RPM. This is the Knuckle equivalent of a "C" cam. |
| 63/35 | 278 | 318 | 0.368 | 0.156 | ||||
ANDREWS PRODUCTS, INC.
431 Kingston Ct., Mt. Prospect, IL 60056
Phone 847-759-0190 Fax 847-759-0848
andrewsproducts.com