Eagle Oldsmobile 45 4.500in Crank 7.100in H-Beam -15cc Inv Dome 4.165in Pistons Balanced Assembly

If you're rebuilding the heart of your Oldsmobile 45 engine for street use, a balanced rotating assembly like this one from Eagle is a solid foundation. This assembly includes a 4.500-inch cast crankshaft, 7.100-inch H-beam connecting rods with ARP 7/16-inch bolts, and 4.165-inch forged pistons with a -15cc inverted dome. It's designed to work well with pump gas and naturally aspirated setups, making it a great choice for a street-driven vehicle.

Eagle has put together a well-built package here. The H-beam rods are known for their strength, and the inclusion of ARP 8740 bolts means you're getting reliable fasteners. The forged 4032 Diamond pistons are a good choice for street performance, and the -15cc inverted dome helps achieve a desired compression ratio. This assembly also comes with plasma-moly file-fit rings, which allow for proper piston-to-wall clearance, and King SI rod and main bearings, which are well-regarded for their performance in street applications. Everything is balanced as an assembly, which is crucial for smooth engine operation and longevity, reducing vibration and stress on your engine's internal components.

This balanced rotating assembly is a significant step towards a refreshed Oldsmobile 45 engine. Keep in mind that this assembly is not CARB approved and cannot be shipped to California. It's always a good idea to consult your engine builder or refer to Eagle's specific installation guidelines to ensure proper assembly and break-in procedures for your new rotating components.