N-61 Camshaft.  Requires aftermarket pistons and 1.6 roller rockers.
RPM range 2500-6500

302-331 c.i.d. Best performer for 302 c.i.d. at 6200/6300 shift point. Great with TFS or Edelbrock heads 24 or 30lb injectors and 80mm mas air. Recommend 4.10 or 4.30 gears. Good drivability down to 2200 rpm, lumpy idle, rpm range 2500-6500, needs 2800 to 3100 converter. Must use AFM valve springs. N-61 Camshaft.  Requires aftermarket pistons and 1.6 roller rockers.
RPM range 2500-6500

302-331 c.i.d. Best performer for 302 c.i.d. at 6200/6300 shift point. Great with TFS or Edelbrock heads 24 or 30lb injectors and 80mm mas air. Recommend 4.10 or 4.30 gears. Good drivability down to 2200 rpm, lumpy idle, rpm range 2500-6500, needs 2800 to 3100 converter. Must use AFM valve springs.