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they have hardened stem tips for durability and are swirl-polished
Positive stop bushing areaArea for staking bushing (prevents bushing spin)Snap ring to prevent seal blow-outLube reliefs on outer gear pocketsBillet 4140 HTSR steel stator shaft will never spin-out
The Speedmaster top plates allow air to enter smoothly through the top
Speedmaster lightweight crankshafts are perfect for engines wanting quicker rpm
These MidAir Series Manifolds includes a 4150 Series 1200 CFM Billet Throttle Body
Chevy BBC 454 Gen 5 & 6 1991 - Up 1Pc RMS Rubber Oil Pan Gasket they have hardened stem tipsSpeedmaster gaskets are designed for today's performance engines, which can create excessive amounts of vacuum and pressure in the oil pan. They're constructed from a cellulose nitrile material that features excellent tensile strength and superior blowout resistance, and their latex coating conforms to minor sealing surface irregularities for a better seal.
