Description
Radical camshaft intended for highly modified 40 engines whereas a true roller rocker is mandatory. 7/16th screw in rocker studs a must. Deep exhaust tone. Heavy chop in exhaust. Compression ratios of 10.8 to 11.5. Aftermarket intake manifold , Holley 750 or 950 cfm carb, enhanced ignition, Headers, True dual exhaust, 3000 to 3800 stall speed converter for automatic transmission. Recommended gear ratio for automatic 3.90 to 4.56. Manual transmission 4.10 to 4.56 gear ratios. RPM range 3500 to 6500.
@.050 236 int.
@.050 244 exh.
Lobe separation 109
Lift Int. .575
Lift exh. 560
suggested lifters https://oldsperformanceproducts.com/product/lifters-hydraulic/
