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Burst panel is designed to blow open or release excessive manifold pressure in the event of an internal engine explosion
NO HOLES NEEDED in head
Fits Simpson Viper
1975-1985 Chevrolet G20
Callies BB Chevy 4340 Forged Magnum Crank 4.250 Stroke 1205003 Burst panel is designed toProduct Description: Crankshaft Magnum 4. 250 in Stroke Internal Balance Forged Steel 2 Piece Seal Big Block Chevy Sold Individually Callies Performance Products began manufacturing high performance crankshafts in 1989. With many years of engineering and employee experience, Callies has grown to be the industry leader for innovative product design. Callies Performance Products takes pride in staying ahead of the competition with the latest high tech
