Product Description Specifications Jet boat A impeller, hydro or flat bottom river racer. Use tunnel ram. 4 speed or 4500 stall in 460c.i. and 5000 stall in 429. 11:1+ compression. CARB: This product is not CARB Legal and not for sale in California Category: Engine Components>Camshafts Core: N LTL: N MPN: 34-653-5 Proposition 65: Y Special Order: Y