Forged S/B Chevy Rotating Ass.-434 Dome-350 Main Journal-6 Rod-.040 OSCategory: Chevy Main BearingSpeedway introduces forged rotating assemblies, with an optional balance job. Includes new 2-pc rear main seal crank, rods and pistons. Cranks are new so they use standard size bearings.All Scat 4340 cranks are 2-piece rear main seal, internally balanced and weigh approximately 51-55 lbs. All balancing is done with our state-of-the-art "hines" balancer by race mechanics with over 30 years of experience! A kit purchased with the optional balance job will ship in 24-48 hours. These rotating assembly engine rebuild kits may require additional charges for heavy metal.If you are going to run this crank in a sprint car motor, you must have the crank flange turned down prior to balancing the crank to allow it to go through the motor plate.Chevy 434: 4.125" bore x 4.00" strokeNOTE: Piston rings are not included and must be purchased separately. Use Style C rings.Item Details.180" dome, 460 g.Comp. 76cc: 12.7C/R 64cc=14.5, 69cc=13.5Piston/Pin Weight: 589 gRod Length: 6"