$3,063.71

$3,404.12

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Rotating Assembly, Forged Pistons, H-beam Connecting Rods, Internal Balance, 3.750 in. Stroke, 5.850 in. Rod Length, Ford, 300, Kit
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Manley Rotating Assemblies 29220UBR

Manley Rotating Assemblies 29220UBR

MAN-29220UBR

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Part Number: MAN-29220UBR

Estimated Ship Date: Nov 6, 2026

$3,063.71

$3,404.12

(Save $340.41)

Estimated Ship Date: Nov 6, 2026 Would you rather pick it up?

Overview

Brand:
Manufacturer's Part Number:
29220UBR
Part Type:
Product Line:
Summit Racing Part Number:
MAN-29220UBR
UPC:
807298107554
Actual Engine Displacement:
4.9L/300
Rear Main Seal Style:
1-piece
Bore (in.):
3.572 in.
Bore (mm):
90.729mm
Engine Stroke (in.):
3.750 in.
Balanced:
No
Piston Material:
Forged aluminum
Piston Style:
Dish, with no valve reliefs
Harmonic Balancer Included:
No
Flexplate Included:
No
Flywheel Included:
No
Pistons Included:
Yes
Piston Head Volume (cc):
+18.00cc
Wrist Pin Style:
Floating
Piston Rings Included:
Yes
Piston Ring Facing Material:
Plasmamoly
Crankshaft Included:
Yes
Crankshaft Material:
Forged 4340 steel
Engine Balance:
Internal
Connecting Rods Included:
Yes
Connecting Rod Length Center to Center (in.):
5.850 in.
Connecting Rod Material:
Forged 4340 steel
Connecting Rod Beam Style:
H-beam
Rod Bearings Included:
Yes
Rod Bearing Undersize (in.):
Stock
Rod Bearing Undersize (mm):
Stock
Main Bearings Included:
No
Cam Bearings Included:
No
Gaskets Included:
No
Oil Pump Included:
No
Camshaft Included:
No
Lifters Included:
No
Timing Chain and Gears Included:
No
Plastigage Included:
No
Assembly Lubricant Included:
No
Quantity:
Sold as a kit.
Notes:
Kit includes 3/8 in. ARP 2000 rod bolts. Fits models with a 2-valve or 4-valve engine.

Manley Rotating Assemblies

When it comes to building horsepower and torque, you need to start at the bottom and work your way up. Manley rotating assemblies are designed for performance enthusiasts wanting to get the most out of their engines. Their assemblies feature 4340 forged steel crankshaft and H-beam connecting rods, either 7/16 in. ARP 8740 cap screws with a 750 hp rating for LS engines/900 hp for big blocks, or optional ARP 2000 cap screws for up to 1,500 hp. They use 2618 Platinum Series forged aluminum pistons, chromoly premium wrist pins, Total Seal piston rings, and Clevite "H" Series narrowed rods and "P" or "H" Series main engine bearings. Building high-horsepower performance engines takes a lot of thought and all the right parts. Start off right with Manley rotating assemblies.

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