Carrillo BC1122-STD Bullet Series Forged Piston Set Small Block Chevy 400 23° 4.125 Bore

The Carrillo BC1122-STD Bullet Series pistons are precision-engineered forged aluminum pistons designed specifically for small block Chevy 400 cubic inch engines with 23-degree cylinder heads. These high-performance pistons deliver exceptional strength and reliability for performance street builds and racing applications.

Key Specifications:

• Bore: 4.125 inches (standard bore)
• Stroke: 3.750 inches
• Rod Length: 5.850 inches
• Compression Height: 1.270 inches
• Dish Volume: -27.2cc
• Compression Ratio: 9.1:1 (with 64cc cylinder heads)
• Ring Pack: 1.5mm x 1.5mm x 3.0mm
• Wrist Pin: 0.927 inch diameter x 2.500 inches length
• Valve Relief Depth: 0.310 inches (both intake and exhaust)
• Piston Weight: 401 grams per piston

Features and Benefits:

• Forged from high-strength 2618 aluminum alloy for superior durability
• Dished piston design optimized for pump gas street performance
• Compatible with all 23-degree aftermarket cylinder heads
• Precision CNC machined for optimal fit and balance
• Includes matched ring sets and wrist pins
• Recommended piston-to-bore clearance: 0.0030 to 0.0035 inches
• Proudly manufactured in the USA by CP-Carrillo

These pistons are ideal for naturally aspirated, nitrous, or mild boost applications. The 9.1:1 compression ratio makes them perfect for pump gas street engines while providing excellent power potential. Complete kits include pistons, rings, wrist pins, and clips.