Sportsman Series 400 SBC

Sportsman Series 400 SBC – 640 HP @ 6800 RPM 🏁

Built for racers who demand proven performance and reliability, the Sportsman Series 400 is the perfect balance of horsepower, durability, and budget. Making a strong 640 HP @ 6800 RPM, this small block Chevy is race-ready and backed by premium components throughout.

🛠️ Premium Components

-Dart SHP Block

-4340 Forged Crankshaft & Rods 

-Mahle Forged Pistons 

-AFR Cylinder Heads 

-Comp Cams Roller Camshaft 

-Crower Severe Duty Lifters

-ARP Fasteners

-Plus more top-shelf components chosen for strength and consistency

⚡ Upgrade Options Available

Take your engine to the next level with Siebert Performance upgrades:

-Sportsman Series Carburetor (tuned in-house for max performance)

-Billet Carburetor Spacer

-Electric Water Pump

-High-Torque Mini Starter

-SFI-Approved Flexplate

🏆 Why Choose the Sportsman 400?

This engine is engineered for bracket racers and serious drag racers who want consistency, reliability, and real horsepower. Every component is selected for long-lasting performance and proven results at the track.

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👉 Performance That’s Proven to WIN!