Edelbrock part #2981 Victor Jr. 351W (9.5" deck) intake manifold is designed for competition 351 Windsor Ford V8's from 1969 and later with the following heads: Edelbrock Performer RPM heads #60259, Victor Jr. heads #77169, Victor heads #77219 or similar heads. This intake manifold fits SVO blocks with a 9.5" deck height. Ideal for both oval track and drag racing engines operating between 3500 and 7500 rpm. Runners have a 2.70 square-inch cross sectional area. The Edelbrock Victor Jr. is a single-plane, high-rise intake designed for maximum race-winning power at higher engine speeds.