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SOLID ROLLER<br />
38<br />
SOLID ROLLER<br />
HI-TECH ROLLERS<br />
These designs are typically used with high rocker ratios (1.65-1.75) and efficient cylinder heads. The Hi-Tech .400”<br />
is great for Big Block Chevrolets, Big Block Fords and Clevelands. Due to their lower acceleration rates, these lobe<br />
designs are also very well suited for small block high endurance applications.<br />
CAMSHAFT TYPE<br />
Hi-Tech <br />
Rated Duration @<br />
.020” Tappet Lift<br />
HI-TORQUE .406" ROLLERS<br />
The Hi-Torque .406” , when coupled with higher rocker ratios (1.7 and up), results in very aggressive valve motion.<br />
These provide excellent torque curves and great responsiveness. The smaller lobes are great for restricted<br />
applications, and the larger lobes provide stronger alternatives to the Hi-Torque .440" profiles when coupled with<br />
higher rocker ratios to achieve equivalent valve lift.<br />
CAMSHAFT TYPE<br />
Hi-Torque .406"<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 />
4600 280-6 248 169 .406 .106 .091 .609 .650 .690<br />
4601 284-6 252 172 .406 .114 .098 .609 .650 .690<br />
1477 288-6 256 176 .406 .122 .106 .609 .650 .690<br />
4209 292-6 260 180 .406 .131 .114 .609 .650 .690<br />
4206 296-4 264 184 .406 .139 .122 .609 .650 .690<br />
4207 300-7 268 188 .406 .148 .131 .609 .650 .690<br />
4208 304-7 272 192 .406 .156 .136 .609 .650 .690<br />
4205 308-7 276 195 .406 .164 .147 .609 .650 .690<br />
1481 312-14 280 199 .406 .173 .156 .609 .650 .690<br />
HI-TECH .420" EXHAUST ROLLERS<br />
These designs are used primarily on the exhaust side of the motor. The Hi-Tech .420“ offers controlled valve<br />
opening, which promotes torque over broad ranges. These lobes are great for oval track cams.<br />
CAMSHAFT TYPE<br />
Hi-Tech <br />
.420” Exhaust<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 />
1461 288-7 251 167 .400 .116 .102 .600 .640 .680<br />
4210 296-7 259 175 .400 .129 .114 .600 .640 .680<br />
4211 306-7 269 182 .400 .146 .131 .600 .640 .680<br />
4058 316-7 279 190 .400 .161 .146 .600 .640 .680<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 />
4005 294-6 256 171 .420 .117 .103 .630 .672 .714<br />
4007 296-6 258 173 .420 .123 .108 .630 .672 .714<br />
4003 298-6 260 175 .420 .125 .111 .630 .672 .714<br />
4027 300-6 262 177 .420 .130 .115 .630 .672 .714<br />
4029 302-6 264 179 .420 .133 .117 .630 .672 .714<br />
4023 304-6 266 180 .420 .137 .122 .630 .672 .714<br />
4046 306-6 268 182 .420 .141 .126 .630 .672 .714<br />
4045 308-6 270 183 .420 .144 .129 .630 .672 .714<br />
4047 310-6 272 185 .420 .148 .133 .630 .672 .714<br />
4019 312-6 274 187 .420 .151 .136 .630 .672 .714<br />
4049 316-6 278 189 .420 .158 .142 .630 .672 .714<br />
1 . 8 0 0 . 9 9 9 . 0 8 5 3
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