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SOLID ROLLER<br />
40<br />
SOLID ROLLER<br />
NC SERIES ROLLERS<br />
Designed with aggressive opening side of the RT Series lobe and the easier closing rate of the ever popular Hi-Tech <br />
-5 Series, the NC Series allows good engine speed, stability and durability. This fast open, slower closing design<br />
works very well on the exhaust side of many applications.<br />
CAMSHAFT TYPE<br />
NC Series<br />
Rated Duration @<br />
.020” Tappet Lift<br />
LOBE RATED DURATION IN LOBE TAPPET LIFT @ THEORETICAL VALVE LIFT<br />
NUMBER DURATION DEGREES LIFT TDC @ “0” LASH ROCKER ARM RATIO<br />
@ .050” @ .200” 106° 110° 1.5 1.6 1.7<br />
4151 284 252 172 .405 .115 .099 .608 .648 .689<br />
4152 286 254 173 .405 .117 .101 .608 .648 .689<br />
4150 288 256 177 .415 .123 .107 .623 .664 .706<br />
4153 290 258 178 .415 .125 .109 .623 .664 .706<br />
4149 292 260 181 .421 .131 .114 .632 .674 .716<br />
4145 295 262 183 .421 .138 .122 .632 .674 .716<br />
4147 296 264 183 .421 .140 .123 .632 .674 .716<br />
4144 298 266 185 .425 .143 .127 .638 .680 .723<br />
4146 300 268 187 .430 .146 .130 .645 .688 .731<br />
4143 302 270 190 .430 .153 .136 .645 .688 .731<br />
4148 304 272 192 .430 .158 .141 .645 .688 .731<br />
RZ SERIES ROLLERS<br />
The RZ Rollers are designed for high rpm circle track, drag race and endurance applications that benefit from<br />
higher lift while requiring stability and reliability. Designed for 1.6:1 to 1.8:1 rockers, these profiles incorporate the<br />
latest developments in high rpm and high rocker ratio developments.<br />
CAMSHAFT TYPE<br />
RZ Series<br />
Rated Duration @<br />
.020” Tappet Lift<br />
LOBE RATED DURATION IN LOBE TAPPET LIFT @ THEORETICAL VALVE LIFT<br />
NUMBER DURATION DEGREES LIFT TDC @ “0” LASH ROCKER ARM RATIO<br />
@ .050” @ .200” 106° 110° 1.5 1.6 1.7<br />
4260 RZ293 260 174 .428 .122 .107 .643 .685 .728<br />
4262 RZ297 264 178 .430 .129 .114 .645 .688 .731<br />
4264 RZ301 268 182 .432 .137 .122 .648 .691 .734<br />
4265 RZ303 270 184 .433 .141 .125 .650 .693 .736<br />
4266 RZ305 272 186 .434 .145 .129 .651 .694 .738<br />
4267 RZ307 274 188 .435 .149 .133 .653 .696 .740<br />
4268 RZ309 276 190 .436 .153 .137 .654 .698 .741<br />
4269 RZ311 278 192 .437 .157 .141 .656 .699 .743<br />
4270 RZ313 280 194 .438 .161 .145 .657 .701 .745<br />
4271 RZ315 282 196 .439 .164 .148 .659 .702 .746<br />
4272 RZ317 284 197 .440 .168 .152 .660 .704 .748<br />
4273 RZ319 286 199 .441 .172 .156 .662 .706 .750<br />
4274 RZ321 288 201 .442 .176 .160 .663 .707 .751<br />
4276 RZ325 292 205 .444 .183 .167 .666 .710 .755<br />
1 . 8 0 0 . 9 9 9 . 0 8 5 3
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