Application: Compatible for Chevrolet Small block(2.100" rod journal) For General Motors/Compatible for GM/Chevrolet - LS-Series V8 engine Available in 5.7" or 6.0" lengths; Specification: *Type: Forged 4340 aircraft chrome moly quality steel for racing *H-beam Conrods Quantity: 8 Pieces as showing in picture *Bolts: Including ARP 8740 7/16" bolts *Advertised Horsepower Rating: 200HP/piece *Top acceleration: 9000rpm *package size: 28cm*24cm*14cm Dimension: Center to center length: 155.58mm/6.125" Big end diameter: 56.515mm/2.225" Small end diameter: 23.55mm/0.927" Big end width: 23.9mm/0.941" Small end width: 25.65mm/1.01" Feature: 1. Material: Forged SAE 4340 Chrome Moly Steel for the highest strength and durability, dedicated for Racing; 2. H-Beam design reduces weight without compromising strength; 3. Heat-treating Shot-peened for remained consistent and strong. Shot-peened finish to remove the potential for stress risers; 4. High precision CNC machined, Precision rod cap alignment dowels; 5. Bores finished to +/- .01 mm; 6. Balanced to within +/- 1 g per rod; 7. Each rod is magnetic particle tested to ensure free of flaws; 8. Use X-rayed, sonic tested; 9. Custom Service. Note: *Professional installation is highly recommended ; *Custom Service: If there's no conrods you need on our site, we would be happy to help determine your requirements and develop a solution with you to satisfy your needs.