Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
Vehicle Info NeededEAGLEPART NUMBER: 356-B13102L03053
Eagle Chevy Small Block 1pc Seal Balanced Street and Strip Rotating Assemblies
$1,83199
Ships on 09/16/2026
Lowest Price GuaranteeChevy 305 Small Block 1pc Seal Balanced Rotating Assemblies3.750" Stroke 5.700" Rods Hypereutectic Pistons Externally Balanced
- Street and Strip Rotating Assembly -
305 1pc External
Stroke: 3.750
Disp. @ .030: 334
Rod Length: 5.700
Pistons: -10cc Dish
Rings: Standard
Comp. Ratio 58cc/64cc: 10.1/9.4
External balance - includes a street dampner and 153 tooth Automatic transmission flexplate. If you require the same kit with a 168 tooth flexplate, order part number - 356-B13102L03068. If you require a Manual transmission flywheel or different dampner, the factory GM 400 small block external balanced dampner and the factory 1-piece rear main seal external balance flexplate or flywheel can be used or new components will need to be purchased separately. From the factory 1-piece rear main seal small block Chevy 305, 350, LT1 and Vortec engines are balanced internally in the front and externally in the rear. When building these engines with an internal or external balance Eagle rotating assembly the balance is changed. This kit cannot be used for the 1992-97 LT1 engines due to the fact that a suitable external balance dampner/harmonic balancer does not exist for these engines.
Performance Small Block Chevy Rotating Assemblies
These rotating assemblies are designed for 1986-Up small block Chevy with 1-piece rear main seals. They offer affordable performance and reliability for engines making less than 500 horsepower. Kits include an Eagle Cast Steel Crankshaft; Eagle "SIR" I-Beam Rods; KB Hypereutectic, SRP, or Mahle Forged Pistons; Hastings Rings; and Clevite or King Bearings. Kits available with internal or external balance.
Show More
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. Kits available in a standard bore or .020 in., .030 in., .040 in., and .060 in. oversized. Eagle Specialty Products reserves the right to substitute pistons due to availability.Part TypeEngine Rotating Assembly Kit
Product LineEagle SBC 1pc Seal Balanced Street and Strip Rotating Assemblies
BrandEAGLE
Part CategoryPerformance Parts
Crankshaft MaterialCast steel
Piston And Ring Oversize0.03 in (0.8 mm)
Main Bearing Undersize (Mm)Stock
Wrist Pin StyleFloating
Connecting Rod Beam StyleI-beam
Rod Bearing Undersize (Mm)Stock
Piston Ring Facing MaterialPlasmamoly
Piston StyleDish, with a D-shaped cup
Assembly Lubricant IncludedNo
Piston Head Volume (Cc)10
Gaskets IncludedNo
Rear Main Seal Style1-piece
Main Bearing Undersize (In.)Stock
Crankshaft IncludedYes
Piston Rings IncludedYes
Bore (Mm)95.656
Actual Engine Cid334
Engine Stroke3.75 in (95.25 mm)
Connecting Rod MaterialForged 5140 steel
Pistons IncludedYes
Rod Bearing Undersize (In.)Stock
QuantitySold as a kit
Main Bearings IncludedYes
Engine BalanceExternal
Rod Bearings IncludedYes
Connecting Rods IncludedYes
Oil Pump IncludedNo
Camshaft IncludedNo
Timing Chain And Gears IncludedNo
BalancedYes
Piston MaterialHypereutectic aluminum
Cam Bearings IncludedNo
Part FitmentSemi Universal
Plastigage IncludedNo
Lifters IncludedNo
Bore3.766 in (95.656 mm)
Vendor Part NumberB13102L03053
Package Qty1
Package TypeEA
No Questions
No Reviews
Items You Need
JEGS
32-Blade Feeler Gauge Kit 0.0015" to 0.035" (0.038mm to 0.889mm)
Part Number : 555-80500
$999$10.99
You Save$1.00
![Engine Assembly Lube [4 oz. Bottle]](https://www.jegs.com/images/mini_200/500/555/555-28000.jpg)
JEGS
Connecting Rod Guide Tools Fits Rods with 3/8"-24 Rod Bolts or Cap Screws
Part Number : 555-80840
$2609$31.99
You Save$5.90
JEGS
Wrinkle Band Ring Compressor Adjustable for 3" -5" Bore Sizes
Part Number : 555-W80574
$1599$17.99
You Save$2.00
![Break-In/Engine Oil Supplement [12 oz. Bottle]](https://www.jegs.com/images/mini_200/500/555/555-28060.jpg)
![Flywheel 168 Tooth for 1986-1999 Small Block Chevy w/1-Piece Rear Main Seal [External Balance]](https://www.jegs.com/images/mini_200/500/555/555-601256.jpg)
JEGS
Flywheel 168 Tooth for 1986-1999 Small Block Chevy w/1-Piece Rear Main Seal [External Balance]
Part Number : 555-601256
$12899$139.29
You Save$10.30
![Flywheel for 1986-1992 Small Block Chevy 305 5.0L & 350 5.7L, 153-Tooth [Externally Balanced]](https://www.jegs.com/images/mini_200/500/555/555-601250.jpg)
JEGS
Flywheel for 1986-1992 Small Block Chevy 305 5.0L & 350 5.7L, 153-Tooth [Externally Balanced]
Part Number : 555-601250
$12499$134.99
You Save$10.00
![Flywheel for 1986-1992 Small Block Chevy 305 5.0L, 153-Tooth [Externally Balanced]](https://www.jegs.com/images/mini_200/500/555/555-601257.jpg)
JEGS
Flywheel for 1986-1992 Small Block Chevy 305 5.0L, 153-Tooth [Externally Balanced]
Part Number : 555-601257
$12499$134.99
You Save$10.00
JEGS
Part Number : 555-80500
$999$10.99
You Save$1.00
Some parts are not legal for use in California or other states with similar laws / regulations
