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An engine with a 4340 billet steel crankshaft will rev faster and cleaner due to the different harmonics produced from the high grade material
Like all Speedmaster cylinder heads
Speedmaster H Beam Street / Strip connecting rods are manufactured from aircraft quality 4340 Chromoly steel
They distribute the ever-increasing valve spring loads over the retainer better than typical 7 degree locks by reducing the chance of "pull-through" failure
Chevy SBC 350 BBC 454 Billet Aluminum Starter End Plate 10" & 11" An engine with a 4340Put your starter on a Speedmaster mounting block. Designed for Speedmaster starters, these durable mounting blocks are precision machined from billet aluminum. These mounting blocks keep your starter secured and properly adjusted.
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