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#9151275
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400 mains Main Journal Style, 4.000" Engine Stroke
| MFG. Part # | Select Oversize |
| Cylinder Bore Size | Select Oversize |
| Connecting Rod Type | H-Beam |
| Piston Style | Flat Top |
| Piston Material | Forged Aluminum |
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Return PolicySpeedway 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 (must be purchased separately, part # 91510201). 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.
Flat top, 434 g.
Comp. 76cc: 10.7
C/R 58cc=13.4, 64cc=12.4, 69cc=11.7
Piston/Pin Weight: 554 g
Rod Length: 6"
Kits feature:
Kit Includes:
(1) Icon IC849.030 Forged Chevy 434 Pistons
(1) Small Block Chevy 6.0 H-Beam Connecting Rods, 4340 Steel, 7/16
(1) Scat 4-400-4000-6000 434 Chevy 4340 Forged Crankshaft, 4.00 Stroke
(1) King HP Series Chevy 350/400 Large Journal Engine Rod Bearings, Std
(1) King MB 509HP HP Series Chevy 400 Large Journal Main Bearings
| KEY SPECS | |
|---|---|
| MFG. Part # | Select Oversize to see |
| Brand | Speedway Motors |
| Cylinder Bore Size | Select Oversize to see |
| Connecting Rod Type | H-Beam |
| Piston Style | Flat Top |
| Piston Material | Forged Aluminum |
| GENERAL | |
| Main Journal Style | 400 mains |
| Engine Stroke | 4.000" |
| Connecting Rod Length | 6.000" |
| Connecting Rod Material | Forged 4340 Steel |
| Connecting Rod Weight | 634 grams |
| Connecting Rod Bolt Diameter | 7/16" |
| Piston Diameter | Select Oversize to see |
| Piston Weight | 434 grams |
| Piston Ring Style | C |
| Crankshaft Material | Forged 4340 Steel |
| Rear Main Seal Style | 2-piece |
| Wrist Pin Diameter | 0.9272" |
| Main Journal Diameter | 2.650" |
| Rod Journal Diameter | 2.10" |
| Bearing Construction | Bi-metal |
| Bearing Undersize | Standard |
| Narrowed Bearing | Yes |
| Coated Bearing | No |
| Notes | Torque rod bolts to 63 ft./lbs. |
| Sold in Quantity | Kit |
2 Questions • 2 Answers
Can this assembly fit in a GM production 400 block with clearancing?
by Evan
• 8 years ago
1 answer
View Answer
Does this rotating assembly coincide with itself without having any machine work only machine work needed will be two block
by Jesse
• 9 years ago
1 answer
View Answer
2 of 2 questions shown
