20R
Our mr280 is designed for 20r heads using the shorter (.100) OEM 22r valves. While this affordable implement allows a larger valve advantage, it also reduces your maximum allowable lift to 405@valve. The mr280 is the most effective cam for this combination, allowing maximum torque gains, and affords the maximum safe lift to prevent spring bind, and retainer to guide seal contact.
22R
For 22R carb'd motors we recommend the C284.
22RE/RTE
For RE and RTE motors we recommend the C270 cam for the best torque and broad horsepower range.
| 20R - MR280
camshaft
22R - C284 camshaft 22RE/RTE - C270 camshaft |
$185
$185 $185 |
For those building their own motors we also have custom cams available for various specialty applications. Please call us to discuss your cam needs.
NOTE: It is the builder's responsibilty to calculate correct installed height, and valve retainer to guide clearance.
D.O.A. Racing Engines
Tim Jenkins, owner
128 Milbros Lane
Mooresville, NC 28117
DOARACING@AOL.COM
(704) 799-6261
NOTE: Items may only be returned with prior approval;
all returns are subject to a 25% restocking fee.
Absolutely no returns or refunds on custom ordered components or custom work.
Please read our full order, core return, and shipping policies before ordering.