Specifications
- Brand
- Eagle
- Part #
- 12500030
- UPC
- 793348538600

Eagle Chevy 400 3.750in Crank 5.700in H-Beam -20cc 4.155in Pistons Rotating Assembly
$2713.28
Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.
Eagle Chevy 400 rotating assembly with 3.750" forged crank, 5.700" H-beam rods, and -20cc Mahle pistons. Built for competition.
Key Features
- Fits Chevy 400 engines.
- Features a 3.750-inch forged 4340 crankshaft.
- Includes 5.700-inch H-beam connecting rods with 7/16-inch ARP 8740 bolts.
- Comes with forged 4032 Mahle pistons, -20cc inverted dome, 4.155-inch bore.
- Equipped with plasma-moly file-fit rings for custom gapping.
- Includes King XP rod and main bearings.
⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more
Product Details
This Eagle Competition Rotating Assembly starts with a 3.750-inch forged 4340 crankshaft, a solid foundation for a high-performance Chevy 400 engine build. It's designed to handle the rigors of racing, including applications using nitrous oxide or forced induction, meaning it's built with durability and strength in mind for demanding conditions.
The assembly includes 5.700-inch H-beam connecting rods, known for their robust construction and ability to withstand significant stress. These rods are paired with 7/16-inch ARP 8740 bolts, a popular choice for their reliability in high-stress environments. For the pistons, you get forged 4032 Mahle units with an inverted dome design, featuring a -20cc volume and a 4.155-inch bore size. These pistons are matched with plasma-moly file-fit rings, allowing for precise gap setting to optimize performance and sealing. To complete the rotating assembly, King XP rod and main bearings are included, offering excellent wear resistance and smooth operation under load.
This is a comprehensive package for anyone looking to build a powerful and reliable engine for competition. Please note that this assembly is not CARB approved and cannot be shipped to California. Always refer to manufacturer instructions for proper installation and break-in procedures.
Specifications
- Brand
- Eagle
- Manufacturer Part #
- 12500030
- UPC
- 793348538600
Frequently Asked Questions
You Might Also Like
Similar products from the same category

Eagle Nissan RB26 Engine Connecting Rods (Set of 6)

Eagle Chevy 454 1Pc 4.250in Crank 6.385in I-Beam Rods 18cc Dome 4.280in Pistons Rotating Assembly

Eagle Oldsmobile 455 4.250in Stroke Cast Crankshaft

Eagle Chevy LS7 4.125in Crank 24 Tth Reluctor 6.125in H-Beam -5cc 4.135in Pistons Rotating Assembly
Eagle Chevy 400 3.750in Crank 5.700in H-Beam -20cc 4.155in Pistons Rotating Assembly
