Part Number:
ESP-12142
SB Chevy 377 Rotating Assembly Kit, Eagle 4340 Forged steel Crankshaft 3.480 Stroke, 350 Main, Eagle 6.250 H-Beam Rods, JE Forged +6.2cc Dome Pistons, 2-PC Rear Seal, Performance Rings and Bearings Included
Special Price
$2,874.95
Regular Price
$2,924.95
⚠ PROP 65 WARNING
⚠ WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer. Please contact us to obtain a list of harmful chemicals.
For more information, go to www.P65Warnings.ca.gov.
Eagle competition rotating assemblies are designed to support engine builds up to 750 horsepower. With added rod bolt upgrades these kits can surpass 900 plus horsepower ratings. *Engine builds exceeding 1000 horsepower please call us for a quote
Eagle 4340 forged steel crankshaft, 3.480 stoke, 2 piece rear seal, *350 Main*
Eagle 4340 steel H-Beam rods with 7/16" ARP 8740 rod bolts, 6.250 length
2618 Forged JE pistons with performance ring set
Performance racing rod and main bearings
Rotating assembly kit is unbalanced, Internal balancing required before installation (Part number B12008 for balanced version)
Compression Ratio with 58cc 12.3:1
Compression Ratio with 64cc 11.4:1
Compression Ratio with 76cc 10.0:1
Eagle 4340 forged steel crankshaft, 3.480 stoke, 2 piece rear seal, *350 Main*
Eagle 4340 steel H-Beam rods with 7/16" ARP 8740 rod bolts, 6.250 length
2618 Forged JE pistons with performance ring set
Performance racing rod and main bearings
Rotating assembly kit is unbalanced, Internal balancing required before installation (Part number B12008 for balanced version)
Compression Ratio with 58cc 12.3:1
Compression Ratio with 64cc 11.4:1
Compression Ratio with 76cc 10.0:1
| CNC Part Number | ESP-12142 |
|---|---|
| Price | $2,924.95 |
| Sold As | Kit |
| Manufacturer's Part Number | 12142 |
| Brands | Eagle, JE |
| Part Types | Engine Rotating Assembly Kit |
| Departments | Parts |
| Vehicle Make | SB Chevy |
| Balanced Assembly | No |
| Balance Type | Internal |
| Crankshaft Material | 4340 Forged Steel |
| Crankshaft Stroke | 3.480 |
| Piston Brand | JE |
| Piston Type | Dome |
| Rod Length | 6.250 |
| Rear Main Seal | 2 Piece |
| Piston Material | Forged |
| Custom Notices | ⚠ PROP 65 WARNING |









