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Speedmaster LS-series cylinder heads are rapidly expanding
Four corner water ports
They feature extra-thick steel that's double-welded to the ring gear for added strength and anodized for corrosion resistance
Bearing wear is dramatically reduced and the fatigue strength is greatly improved
Crafted from high-quality aluminum
Mopar Chrysler SB 318 340 360 BB 383 440 Internal Bal. Heavy Duty SFI Flexplate Speedmaster LS-series cylinder heads areSpeedmaster flexplates make excellent upgrades to your stock design. They feature extra thick steel that's double welded to the ring gear for added strength and anodized for corrosion resistance. Speedmaster flexplates will withstand the extreme power and rpm of today's engines. Bolts directly to torqueflite converters
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