Racer Brown Cam Specs

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Profile

 Effective Duration

Valve Lift '@ Zero Lash
Designation Duration @ .050" Rocker Arm Ratio
      1.5 1.6
EH-5 244 192 .369 .394
EH-10 260 206 .416 .444
EH-4 250 200 .405 .431
EH-12 256 202 .407 .434
EH-8 260 214 .456 .486
EH-20 264 220 .450 .480
EH-22 268 222 .456 .487
EH-18 274 224 .462 .493
SS-H-45 260 213 .417 .445
ST-2 260 218 .450 .480
SS-H-23 270 224 .455 .485
SS-H-50 274 222 .477 .509
SS-H-51 276 226 .474 .506
ST-14 266 236 .486 .519
SS-H-24 274 232 .470 .501
ST-22 276 242 .509 .543
ST-23 278 246 .502 .56
ST-15 280 240 .485 .517
SS-H-25 286 238 .485 .517
ST-21 286 254 .520 .554
SS-H-44 292 242 .510 .543
ST-8 292 256 .445 .474
ST-12 294 251 .480 .512
SS-H-26 296 249 .485 .517
STX-64* 286 252 .527 .562
STX-19M 294 257 .527 .562
STX-19M 296 262 .527 .562
ST-H-42 300 254 .520 .554
STX-17 302 264 .525 .560
         
Profile Effective Duration Valve Lift '@ Zero Lash
Designation Duration @ .050" Rocker Arm Ratio
      1.5 1.6
STX-20 302 267 .540 .576
STX-21M 304 266 .560 .597
STX-18** 306 268 .572 .610
STX-21M 306 272 .560 .597
STX-22 310 276 .590 .629
STX-60** 310 271 .632 .674
STX-23m 312 272 .570 .608
STX-62** 312 280 .653 .697
STX-23 314 276 .570 .608
STX-24 318 284 .583 .621
STX-42 320 290 .631 .673
ST-H-41 324 272 .560 .597
STX-57 330 291 .573 .611
STX-40M 340 300 .600 .640
**Must use 1.000" Diameter Mushroom Lifter Any of the above profiles can be combined for dual -profile camshafts when the applications warrant.  Sometimes, this is valid, sometimes it isn't.
199-R 264 218 .579 .617
54-R 270 239 .484 .516
X-103M 280 240 .520 .555
X-103 284 246 .520 .555
X-112 288 253 .516 .551
82-RM 292 252 .527 .562
77-RM 294 247 .645 .688
82-R 298 262 .527 .562
77-R 298 254 .645 .688
43-RM 300 259 .519 .554
         
Profile Effective Duration Valve Lift '@ Zero Lash
Designation Duration @ .050" Rocker Arm Ratio
      1.5 1.6
170-RM 300 256 .624 .666
180-RM 302 253 .596 .636
108-RM 302 262 .601 .641
170-R 304 262 .624 .666
188-RM6 304 265 .728 .777
108-R 306 263 .601 .641
180-R 308 260 .596 .536
102-RM 308 266 .623 .656
189-RM6 308 268 .651 .692
102-R 310 272 .623 .665
125-R 312 262 .631 .673
67-RM 314 256 .604 .665
97-RM 314 266 .635 .677
171-R 314 272 .625 .667
178-RM 315 271 .671 .713
97-R 315 272 .635 .677
67-R 318 263 .604 .665
126-R 322 271 .647 .699
140-RM2 322 278 .676 .721
140-RM6 324 280 .676 .721
140-R 324 284 .676 .721
146-RM6 328 283 .687 .733
138-RM4 332 285 .631 .673
150-RM6 332 278 .646 .690
146-R 332 286 .687 .733
121-R 332 290 .701 .748
151-R 334 283 .648 .692
138-RM6 336 288 .631 .673
Profile Effective Duration Valve Lift '@ Zero Lash
Designation Duration @ .050" Rocker Arm Ratio  
      1.5 1.6
138-R 336 291 .631 .673
176-R 336 291 .729 .778
152-R 340 289 .653 .697
Profile Effective Duration Valve Lift @ Zero Lash
Designation Duration @ .050" Rocker Arm Ratio  
      1.70 1.73
EH-5 244 192 .418 .426
EH-11 244 194 .440