Description
True roller rockers a must. 7/16th rocker studs required. Deep exhaust tone. Heavy Chop in exhaust. Suggested compression ratio 10.9 to 11.5. Stall speed suggested minimum 2800 to 3500 for automatic transmission applications. Can be used with manual transmission as well. Suggested gear ratio with automatic 3.73 to 4.30. Manual transmission gear ratio suggested 3.93 to 4.56. Aftermarket intake, headers, enhanced ignition system suggested. RPM range 2600 to 6000
@.050 238 int.
@.050 251 exh.
Lobe separation 112
Int. Lift .560
Exh. Lift .552
suggested lifters https://oldsperformanceproducts.com/product/lifters-hydraulic/
