CAM AND GEAR SETS FOR SPORTSTER

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. Cam Grind: Y. Fits Ironhead Sportster 1957/1970
By: ANDREWS PRODUCTS INC