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SOLID FLAT TAPPET<br />
32<br />
SOLID FLAT TAPPET<br />
N SERIES SOLIDS<br />
Being our most popular NASCAR Nextel Cup designs, these provide excellent power and reliability. Very stable at<br />
high rpm (8600+) with #927 springs and proper valve train selection. Excellent high end power with slightly less<br />
low end torque than XX series. Needs .875" HTL tappet and true lifter bores with very careful break-in.<br />
CAMSHAFT TYPE<br />
Intake Designs<br />
N Series<br />
Rated Duration @<br />
.020” Tappet Lift<br />
.875" Min. Dia.<br />
Exhaust Designs<br />
N Series<br />
Rated Duration @<br />
.020” Tappet Lift<br />
.875" Min. Dia.<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 />
7020 294N-1 262 174 .401 .129 .115 .602 .642 .682<br />
7021 298N-2 266 176 .410 .134 .120 .615 .656 .697<br />
7022 300N-1 268 173 .406 .132 .121 .609 .650 .690<br />
7028 302N-1 270 181 .410 .143 .128 .615 .656 .697<br />
7023 304N-1 272 183 .412 .147 .132 .618 .659 .700<br />
7084 306N-1 274 186 .411 .151 .136 .617 .658 .699<br />
7085 308N-1 276 187 .411 .155 .141 .617 .658 .699<br />
7086 310N-1 278 189 .411 .158 .143 .617 .658 .699<br />
7087 312N-1 280 191 .411 .161 .147 .617 .658 .699<br />
7120 304N-3E 266 174 .390 .128 .114 .585 .624 .663<br />
7121 308N-1E 270 179 .400 .133 .119 .600 .640 .680<br />
7122 310N-1E 271 178 .390 .137 .123 .585 .624 .663<br />
7123 314N-1E 276 183 .400 .145 .131 .600 .640 .680<br />
7124 318N-1E 280 186 .405 .149 .135 .608 .648 .689<br />
OVAL + SOLIDS<br />
These profiles have their design based on the ever popular N-1 series but have been optimized for the higher<br />
rocker ratios, tighter lash settings and lower compression used in today's NASCAR Nextel Cup engines. For use<br />
with 1.7 to 1.8:1 rockers (or more in qualifying.) Requires the same care as the N-1 for break-in.<br />
CAMSHAFT TYPE<br />
Oval + Solids<br />
Rated Duration @<br />
.020” Tappet Lift<br />
.875" Min. Dia.<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° 1.7 1.75 1.8<br />
7037 299 266 177 .399 .136 .122 .678 .698 .718<br />
7038 301 268 179 .401 .140 .125 .682 .702 .722<br />
7039 303 270 181 .403 .143 .128 .685 .705 .725<br />
7040 305 272 183 .405 .147 .132 .689 .709 .729<br />
7041 307 274 185 .407 .151 .136 .692 .712 .733<br />
7042 309 276 187 .409 .154 .140 .695 .716 .736<br />
7043 311 278 189 .411 .158 .143 .699 .719 .740<br />
7044 313 280 191 .413 .162 .147 .702 .723 .743<br />
7049 315 282 193 .415 .165 .151 .706 .726 .747<br />
1 . 8 0 0 . 9 9 9 . 0 8 5 3
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