Unrivaled Customer Service
And Expert Tech Advice!  
Same Day Shipping Before 11 PM ET
My Cart
Shop By Vehicle
Shop By
Close Menu
Shop By Vehicle
Top Categories
All Categories

Top Categories

All Categories

Free Catalog
E-Mail Signup
My Account
Track Order
Gift Certificates

Eagle Eagle Chevy Street Performance Rotating Assemblies

Eagle B13504L04053
Representative Image
Product images may differ from actual product appearance.


jegs shipping
FREE Shipping
Ships directly from the manufacturer
Easy Returns
Easy Returns
Lowest Price Guarantee
Lowest Price Guarantee
Eagle Eagle Chevy Street Performance Rotating Assemblies $998.99
Street Performance Rotating Assembly
Stroke: 3.750
Disp. @ .040: 385
Rod Length: 5.700
Pistons: -12cc Dish
Rings: Standard Gap
Comp. Ratio 58cc/64cc/76cc: 10.4/9.8/8.7

Eagle B13504L04053 Details

Chevy 350 Internal Front/External Rear Balanced, 1pc Rear Main Seal (Includes LT1/Vortec)

O.E. balance - includes a 153 tooth Automatic transmission flexplate. The factory internal balance dampner and external balance flexplate or flywheel can be used or if you require a Manual transmission flywheel or different dampner, new components will need to be purchased separately.


Manufacturer's Part Number:

The Eagle Chevy Street Performance Rotating Assemblies offer great value, performance, and reliability for engines producing under 500 horsepower. All kits include quality components including an Eagle cast steel crankshaft, Eagle SIR I-Beam rods, Speed Pro hypereutectic 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.
  • Internally balanced assemblies do not include flexplate or dampener.
  • Externally balanced assemblies include a 153 tooth Pioneer flexplate for 1pc seal applications or a 168 tooth Pioneer flexplate for 2pc seal applications and a harmonic dampener.
  • Internal Front/External Rear Assemblies include a 153 tooth Pioneer flexplate.
  • Eagle Specialty Products reserves the right to substitute pistons due to availability.

Some parts are not legal for use in California or other states with similar laws / regulations