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A camshaft upgrade is the most logical step after air filter, exhaust, carburetor, and ignition system improvements have been made. It will improve mid and upper-end power. All camshafts listed are ground with stock size base circle and can be used with stock push rods. Instructions included.
Cam Specifications – with stock 1.43:1 rocker arm ratio
Cam Grind Valve Timing Duration @ .053″ Duration @ .020″ Valve Lift Overlap @ .053″ Lobe Centerline Lobe Separation Angle TDC Lift at Valve
Q stock
(76/85) 10/32
35/07 222
222 262
262 .400
.380 17 101
104 102.5 .114
.114
Y 35/47
53/29 262
262 310
310 .425
.425 64 96
102 99 .206
.182
V9 32/52
52/32 264
264 311
311 .490
.490 64 100
100 100 .207
.207
Cam Specifications – with stock 1.625:1 rocker arm ratio
Cam Grind Valve Timing* Duration @ .053″ Duration @ .020″ Valve Lift Overlap @ .053″ Lobe Centerline Lobe Separation Angle TDC Lift at Valve
D stock (88-91) 02/41
41/02 223
223 270
270 .458
.458 04 109.5
109.5 109.5 .094
.094
V2
N2 22/38
46/18 240
244 290
290 .465
.440 40 98
104 101 .180
.155
N4 52/24 256 296 .490 54 104 101 .189
N8 56/28 264 302 .500 60 104 100 .212
* timing listed for .053 lift figures.
Street 900/1000: Great mid-range and upper end power. Biggest cam available for no head work installation. Can use stock springs, need 9:1 or higher compression, 1982 engines may require spring spacing. Special requirements: bolt-in. Power range: 2000/7000 RPM. Grind: Y. Fits Ironhead Sportster 1971/1980
