302 c.i.d. This cam is to be used with 1.6 R.R. Best cam for GT-40. Great with TFS or Edelbrock heads. Minimum 24lb injectors and 75mm mass air. Recommend 3.73 to 4.30 gears. Good drivability down to 2100 rpm, lumpy idle, rpm range 2600-6200, works best with 89-93 EEC, needs 2800-3000