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Mechanical Flat Tappet Lifters<br />
MECHANICAL FLAT TAPPET<br />
Description<br />
Lifter Body Pushrod<br />
Diameter Seat Height<br />
AMC Coolface .903” 1.485” 99.5g 55-59 66945X980-16<br />
CHRYSLER Standard, no pushrod oiling .903” 1.532” 94.1g 55-59 66931-16<br />
CHRYSLER Coolface, Polished face, with pushrod oiling .903” 1.532” 100.3g 62-64 66931P980-16<br />
CHRYSLER Billet, Super polished face .903” 1.640” 86g 64-65 66970P980SP-16<br />
FORD Standard .874” 1.640” 98.2g 55-59 66915-16<br />
FORD Coolface .874” 1.640” 107.9g 55-59 66915X980-16<br />
FORD Billet, Super polished face .874” 1.640” 88.9g 64-65 66974X980SP-16<br />
GENERAL MOTORS Standard .842” 1.570” 97.5g 55-59 66900-16<br />
GENERAL MOTORS Coolface .842” 1.570” 84.3g 55-59 66900X980-16<br />
GENERAL MOTORS Billet, Super polished face .903” 1.570” 75.9g 64-65 66970P980SP-16<br />
Lifter<br />
Weight<br />
RC<br />
Hardness<br />
Part No.<br />
LIGHT WEIGHT MECHANICAL FLAT TAPPET<br />
Description<br />
Lifter Body Pushrod<br />
Diameter Seat Height<br />
CHRYSLER Light weight 78g 66931LW-16<br />
CHRYSLER Light weight, Coolface 78g 66931LW980-16<br />
FORD Light weight 75g 66915LW-16<br />
FORD Light weight, Coolface 75g 66915LW980-16<br />
GENERAL MOTORS Light weight 72g 66900LW-16<br />
GENERAL MOTORS Light weight, Coolface 72g 66900LW980-16<br />
GENERAL MOTORS Light weight, Dual Coolface oiling option* 72g 66900LW982-16<br />
*Dual Coolface option requires the use of a high volume oil pump<br />
Lifter<br />
Weight<br />
RC<br />
Hardness<br />
Part No.<br />
Coolface<br />
The CROWER Coolface option<br />
sends oil to the lifter face<br />
for reduced lobe wear<br />
130 For technical support call 619-661-6477 or visit www.crower.com
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