Description
Must use true roller rocker arm with 7/16th rocker studs. Deep sound in exhaust. Moderate to heavy chop in exhaust. Suggested compression ratio 10.4 to 10.6. Dual exhaust a must, headers, aftermarket ignition, aftermarket single plane intake manifold such as a Holley Street Dominator. 750 carb. Performer rpm intake manifold would be a good second choice. Suggested stall converter at 2800-3500. Gear ratio with automatic 3.73 to 4.10. Manual transmission gear ratios 3.90-4.56. RPM range 3000-6500
@.050 228 int.
@.050 235 exh.
Lobe separation 110
Int. Lift .538
Exh. Lift .525
suggested lifters https://oldsperformanceproducts.com/product/lifters-hydraulic/
