Absolutely the finest cam for a shovelhead on the market today for bottom and
mid-range power. Requires minor head work. 2SA or. 2ST. L31 IN .480. 32/65.
CAMS FOR SHOVELHEADS & PANHEADS VALVE
PART #
OPEN/CLOSE
LIFT
at .053
LOBE CTR
TDC LIFT
V-V
at .020
DURATION
DESCRIPTION
**
L1* H-S
IN EX
.419 .419
38/65 70/32
283 282
247.5 247.5
103.5 109
.159 .143
.240 min
L2S* H-S
IN EX
.443 .443
40/66 74/32
286 286
250 250
103 111
.173 .136
.245 min
L2 H-S
IN EX
.443 .443
39/71 70/34
290 284
254 249
106 108
.167 .153
L3S H-S
IN EX
.482 .482
33/59 66/26
272 272
241 241
103 110
L31 S
IN EX
.480 .480
32/65 65/30
277 275
244 243
L3 S
IN EX
.486 .486
44/69 77/36
293 293
J2 S
IN EX
.483 .483
50/80 74/41
TL3 S
IN EX
.480 .480
J4 S
IN EX
L51 S
RECOMMENDED SPRINGS
A bolt in camshaft that has good low and mid-range power. Designed to increase performance on street machines. No valve spacing required. Gives a broad power band, it requires no head work.
STOCK O.K.
.252 min
For stock or smaller stroker engines. Good midrange and top end cam. Requires valve spacing.
2SA or 2ST
.152 .107
.213 min
2SA or 2ST
106.5 107.5
.159 .131
.233 min
Absolutely the finest cam for a shovelhead on the market today for bottom and mid-range power. Requires minor head work. Similar to the L3S, designed for larger motors.
260 260
102.5 110.5
.228 .153
.290 min
Excellent bottom-end cam for street use. Mild stroker OK. Requires valve spacing for lift.
2SA or 2ST
310 295
278 265
105 106.5
.237 .187
.317 min
28/65 74/22
273 276
241 245
108.5 116
.143 .096
.201 min
.496 .486
46/78 73/40
304 293
271 260
106 106.5
.240 .168
.307 min
Street or strip. Requires valve spacing. Great midrange and top-end RPM. Good for all stroker engines. Works well on stroked motors that are running a turbo. Will require head modifications to fit. Most powerful turbo cam available. For street or strip strokers. Requires solid lifters and valve spacing. All around great RPM range.
IN EX
.508 .508
40/65 74/30
285 284
256 255
102.5 112
.218 .146
.280 min
Similar to L5 with lower RPM band.
2ST or 3ST
L5 S
IN EX
.519 .519
42/72 75/38
294 293
264 263
105 108.5
.220 .192
.310 min
A good street or strip camshaft. Excellent stroker cam with good mid-range and top-end.
2ST or 3ST
L61 S
IN EX
.550 .520
43/85 78/34
308 292
278 263
111 112
.215 .169
.292 min
L6 S
IN EX
.550 .520
47/81 74/38
308 292
278 263
107 108
.239 .192
.322 min
L7 S
IN EX
.565 .544
48/86 80/36
314 296
281 265
109 112
.250 .166
.312 min
L8 S
IN EX
.598 .568
50/82 83/39
312 302
281 270
106 112
.266 .176
.329 min
Drag racing camshaft for stroked motors. Power band developed through the 3000 - 7000 RPM range. Serious racers only. Similar to the L61 in performance, but with different lobe centers. Again drag racing only. Heavy mods required including extra valve clearance. All out racing cam. Best for Fuel or Alcohol. Requires extensive head work. Excellent torque cam with high RPM potential. All out drag racing cam designed for Fuel and Alcohol use. Heavy modifications needed to use this cam. For the expert engine builder only.
PANHEAD ROCKER RATIO: 1.5 TO 1 EARLY 1948-1969 GENERATOR * ** H-S S NOTE:
STOCK O.K.
2SA or 2ST
2ST or 3ST 2ST or 3ST 2ST or 3ST
3ST 3ST 3ST 3ST
SHOVELHEAD ROCKER RATIO: 1.43 TO 1
LATE 1970 – 1976 EARLY CONE
LATE LATE 1977-1984 LATE CONE
BOLT IN CAMSHAFT VALVE TO VALVE CLEARANCE WITH THE VALVES ON THE SEAT INDICATES STOCK HYDRAULIC OR SOLID LIFTERS INDICATES SOLID LIFTERS JIMS or VELVA TOUCH HYDRAULIC LIFTER KIT CAN BE USED WITH ANY CAMSHAFT ON THIS PAGE
TO ORDER, OR FOR MORE INFORMATION CALL (760) 364-4432
