Interchange questions between LA 360 and the Magnum 5.9

If you have a Magnum block with no head oiling holes and you successfully drilled the two holes, you then install LA style camshaft bearings and LA style camshaft drilled for LA oiling as well. That is it. Then you can run any LA head and treat the top end as an LA with rocker shaft oiling.

Trick flow heads can be used on Magnum blocks without the oiling holes but you have to use pushrod oiling. That means lifters, pushrods, and rocker arms that have pushrod oiling provisions built in. Trick has a Harland Sharp rocker arm kit part number they recommend for this.

You can actually run any LA head on a Magnum block as long as the correct pushrod oiling setup is used. Comp Cams Ultra Pro Magnum rocker arms, and the copies like PRW, have the pushrod oiling provisions too.