Speedway introduces premium rotating assemblies, with an optional balance job. Includes new cast crank, rods and pistons. Cranks are new so they use standard size bearings.
- New cast steel crank-standard size journals
- Keith Black Hypereutectic pistons
- Speedway 4340 full floating H-beam rods.
NOTE: 377 kits include main bearing spacers.
NOTE: 350 and 383 assemblies available with piston oversize of .030, .040 and .060. 400 available with .030 and .040 oversize. YOU MUST SPECIFY THE PISTON OVERSIZE IN THE COMMENTS SECTION WHEN YOU CHECK OUT.
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.
NOTE: Piston rings and main/rod bearings are not included and must be purchased separately.