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800.979.0122

(CST) 7am - 10pm

Race and Rod Tech Support

Mon-Fri 8am - 5pm

Canadian Order Line:

855.313.9180

International Order Line:

1.402.323.3200
Since 1952
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$1,430.99
$1,429.99
Forged Small Block Chevy Rotating Ass., 434 Dome, 400 Main Journal, 6 Rod
Forged Small Block Chevy Rotating Ass., 434 Dome, 400 Main Journal, 6 Rod

Forged Small Block Chevy Rotating Ass., 434 Dome, 400 Main Journal, 6 Rod

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Forged Small Block Chevy Rotating Ass., 434 Dome, 400 Main Journal, 6 Rod
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Forged Small Block Chevy Rotating Ass., 434 Dome, 400 Main Journal, 6 Rod
Forged Small Block Chevy Rotating Ass., 434 Dome, 400 Main Journal, 6 Rod
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Part # 9151285
$1,429.99
$1,430.99
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Details

Piston Material:
Forged Aluminum
Connecting Rod Type:
H-Beam
Connecting Rod Length:
6.000"
Crankshaft Material:
Forged 4340 Steel
Rear Main Seal Style:
2-piece
Main Journal Style:
400 mains
Piston Style:
Dome
Dome Height:
.180"
Piston Diameter:
Select Oversize to see
Piston Ring Style:
C
Piston Weight:
460 grams
Wrist Pin Diameter:
.9272"
Stroke:
4.00"
Connecting Rod Material:
Forged 4340 Steel
Connecting Rod Weight:
634 grams
Main Journal Diameter:
2.650
Rod Journal Diameter:
2.10"
Bearing Construction:
Bi-metal
Bearing Undersize:
Standard
Narrowed Bearing:
Yes
Coated Bearing:
No
Sold in Quantity:
Kit

Info

Speedway introduces forged rotating assemblies, with an optional balance job. Includes new 2-pc rear main seal crank, rods and pistons. Cranks are new so they use standard size bearings.

All Scat 4340 cranks are 2-piece rear main seal, internally balanced and weigh approximately 51-55 lbs.  All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience!  A kit purchased with the optional balance job will ship in 24-48 hours. These rotating assembly engine rebuild kits may require additional charges for heavy metal.

If you are going to run this crank in a sprint car motor, you must have the crank flange turned down prior to balancing the crank to allow it to go through the motor plate.

Chevy 434: 4.125" bore x 4.00" stroke

NOTE: Piston rings are not included and must be purchased separately. Use Style C rings.

Item Details

.180" dome, 460 g.
Comp. 76cc: 12.7

C/R 64cc=14.5, 69cc=13.5
Piston/Pin Weight: 589 g
Rod Length: 6"     

 

Notes

Kits feature: 

  • Scat 4340 Forged Steel Crankshaft   
    • Standard size journals
    • Straight shot and chamfered oil holes
    • Nitride hardened and shot peened
    • Lightening holes in all rod throws
    • Large radius on all journals
  • KB Signature Series Forged Pistons 
    • 2618 aluminum alloy construction
    • T-6 heat treated 
    • 4.000" bore pistons available in standard, .030, .040, or .060 sizes
    • 4.125" bore pistons available in .030 or .040 sizes
  • Speedway 4340 H-beam Connecting Rods
    • Full floating pin in silicon bronze bushing
    • Precision bolt bushings to positively locate cap
    • 6.0" lengths
    • 634 grams
    • Weight matched set of 8 rods
  • King HP Series Main & Rod Bearings
    • 0.015" thick top layer for superior macro particle embedability and conformability
    • 40 Vickers hardness to resist overlay migration and extrusion
    • 450°F heat threshold for superior protection against friction and overheating
    • Mains are 3/4 grooved for improved oiling to the rod journals
    • Bi-metal aluminum silicon alloy featuring fine micro-bore finish

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What's In The Kit

Each kit from Speedway Motors is carefully packaged and delivered right to your door. Below is a list of all the items you should expect to receive when you order this kit. Some of these items may also be available for sale individually if you're here looking for replacement parts.
Select a Oversize above to see what items are in this kit.

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