- Engines & Components
- Rotating Assembly Kits
- Eagle SBC 400 Competition Rotating Assemblies
Eagle Chevy Small Block 400 Competition Rotating Assemblies are designed to offer the ultimate strength and reliability at affordable pricing for the most demanding applications using a Chevy 400 small block. Kits include high-quality components including an Eagle Forged 4340 Steel Crankshaft; Eagle H-Beam Rods; JE or Mahle Premium Forged Pistons; Hastings Rings; and high-performance Clevite or King Bearings.
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Notes
- 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 are designed for internal balance.
- Chevy 400 standard bore size is 4.125", kits are available in standard bore, .020", .030", .040" and .060" oversizes.
- Eagle Specialty Products reserves the right to substitute pistons due to availability.
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PART TYPE
PART TYPE
BRAND
BRAND
Part Fitment
Part Category
Vendor Part Number
Piston Material
Rod Bearing Undersize mm
Oil Pump Included
Actual Engine CID
Connecting Rod Material
Main Bearings Included
Piston Rings Included
Piston Head Volume cc
Rod Bearings Included
Piston Ring Facing Material
Assembly Lubricant Included
Timing Chain and Gears Included
RATING
PRICE
Chevy Small Block 400 Competition Rotating Assemblies3.480" Stroke 6.250" Rods Forged Pistons
Competition Rotating Assembly -
400, 2.65 Main
Stroke: 3.480
Disp. @ .030: 377
Rod Length: 6.250
Pistons: 3cc Dome
Rings: File Fit
Comp. Ratio 64cc/76cc: 11.0/9.6
400, 2.65 Main
Stroke: 3.480
Disp. @ .030: 377
Rod Length: 6.250
Pistons: 3cc Dome
Rings: File Fit
Comp. Ratio 64cc/76cc: 11.0/9.6
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$3,201.99
Estimated to ship direct from manufacturer on 07/29/26, pending manufacturer availability.
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Chevy Small Block 400 Competition Rotating Assemblies3.750" Stroke 5.700" Rods Forged Pistons
Competition Rotating Assembly -
400, 2.65 Main
Stroke: 3.750
Disp. @ .030: 407
Rod Length: 5.700
Pistons: -5cc Flat Top
Rings: File Fit
Comp. Ratio 64cc/76cc: 11.0/9.7
400, 2.65 Main
Stroke: 3.750
Disp. @ .030: 407
Rod Length: 5.700
Pistons: -5cc Flat Top
Rings: File Fit
Comp. Ratio 64cc/76cc: 11.0/9.7
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$2,569.99
Estimated to ship direct from manufacturer on 07/29/26, pending manufacturer availability.
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Chevy Small Block 400 Competition Rotating Assemblies3.750" Stroke 6.000" Rods Forged Pistons
Competition Rotating Assembly -
400, 2.65 Main
Stroke: 3.750
Disp. @ .030: 407
Rod Length: 6.000
Pistons: -5cc Flat Top
Rings: File Fit
Comp. Ratio 64cc/76cc: 11.0/9.7
400, 2.65 Main
Stroke: 3.750
Disp. @ .030: 407
Rod Length: 6.000
Pistons: -5cc Flat Top
Rings: File Fit
Comp. Ratio 64cc/76cc: 11.0/9.7
View Details
$2,309.99
Estimated to ship direct from manufacturer on 07/29/26, pending manufacturer availability.
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Competition Rotating Assembly -
400, 2.65 Main
Stroke: 3.750
Disp. @ .040: 409
Rod Length: 6.000
Pistons: -5cc Flat Top
Rings: File Fit
Comp. Ratio 64cc/76cc: 11.0/9.7
400, 2.65 Main
Stroke: 3.750
Disp. @ .040: 409
Rod Length: 6.000
Pistons: -5cc Flat Top
Rings: File Fit
Comp. Ratio 64cc/76cc: 11.0/9.7
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$2,490.99
Estimated to ship direct from manufacturer on 07/29/26, pending manufacturer availability.
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Chevy Small Block 400 Competition Rotating Assemblies3.875" Stroke 6.000" Rods Forged Pistons
Competition Rotating Assembly -
400, 2.65 Main
Stroke: 3.875
Disp. @ .040: 422
Rod Length: 6.000
Pistons: -5cc Flat Top
Rings: File Fit
Comp. Ratio 64cc/76cc: 11.3/10.0
400, 2.65 Main
Stroke: 3.875
Disp. @ .040: 422
Rod Length: 6.000
Pistons: -5cc Flat Top
Rings: File Fit
Comp. Ratio 64cc/76cc: 11.3/10.0
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$2,649.99
Estimated to ship direct from manufacturer on 07/29/26, pending manufacturer availability.
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Chevy Small Block 400 Competition Rotating Assemblies4.000" Stroke 6.000" Rods Forged Pistons
Competition Rotating Assembly -
400, 2.65 Main
Stroke: 4.000
Disp. @ .030: 434
Rod Length: 6.000
Pistons: -5cc Flat Top
Rings: File Fit
Comp. Ratio 64cc/76cc: 11.7/10.3
400, 2.65 Main
Stroke: 4.000
Disp. @ .030: 434
Rod Length: 6.000
Pistons: -5cc Flat Top
Rings: File Fit
Comp. Ratio 64cc/76cc: 11.7/10.3
View Details
$3,050.99
Estimated to ship direct from manufacturer on 07/29/26, pending manufacturer availability.
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Competition Rotating Assembly -
400, 2.65 Main
Stroke: 4.000
Disp. @ .030: 434
Rod Length: *6.000
Pistons: -20cc Dish
Rings: File Fit
Comp. Ratio 64cc/76cc: 10.0/9.1
400, 2.65 Main
Stroke: 4.000
Disp. @ .030: 434
Rod Length: *6.000
Pistons: -20cc Dish
Rings: File Fit
Comp. Ratio 64cc/76cc: 10.0/9.1
View Details
$2,669.99
Estimated to ship direct from manufacturer on 07/29/26, pending manufacturer availability.
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Lowest Price Guarantee