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Eagle 42105030

Eagle Oldsmobile Street and Strip Rotating Assemblies

Eagle 42105030
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Eagle 42105030 Eagle Oldsmobile Street and Strip Rotating Assemblies $2,156.99
Street Performance Rotating Assembly
Stroke: 4.500
Disp. @ .030: 481
Rod Length: 7.100
Pistons: -22cc Dish
Rings: File Fit
Comp. Ratio 77cc/84cc: 10.0/9.5

Eagle 42105030 Details

Oldsmobile 455 Street and Strip Rotating Assemblies

Internal Balance - Flexplate/Flywheel and Balancer Not Included


Manufacturer's Part Number:

Eagle Oldsmobile Street and Strip Rotating Assemblies have the perfect balance of reliability, affordability, and performance for engines producing under 700 horsepower. These kits feature quality components including an Eagle cast steel crankshaft, Eagle H-Beam rods, Mahle forged pistons, Hastings rings, and Clevite or King bearings!


  • Assembly part numbers that begin with “B” are balanced by Eagle and require no additional balancing.  Part numbers that do not begin with “B” are unbalanced assemblies and must be balanced by a qualified machine shop before use.
  • All kits are designed for internal balance.
  • Oldsmobile 455 standard bore size is 4.125", kits are available in .030" and .060" oversizes.
  • Eagle Specialty Products reserves the right to substitute pistons due to availability.

Is the rotating assembly balanced?

Asked by: Bobby442
No, but this would be the balance rotating assembly 356-B42105030.
Answered by: BrandonJ
Date published: 2017-12-07
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