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- Professional Racing Series designed for high spring pressures
Your New Manta Cat Back System Includes
- Vertical tie bars
Can also be used in naturally aspirated applications wanting to retain factory stall convertors and still make great power
Callies Magnum Series III 8 Counterweight 4.00" Crankshaft | 58x Reluctor LS1 Camshafts - Professional Racing Series designedLSX Performance Parts are proud to supply the Callies Magnum Series III crankshafts! Magnum crankshafts are the result of years of precision engineering from Callies who have established themselves as one of the most trusted brands in the world. The Magnum crank is the most durable competition crankshafts ever produced. Magnum crankshafts are manufactured from ultra pure AISI 4340 steel which contains nickel, chromium & molybdenum. AISI 4340 steel is