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#9151236
$2,331.99
/kit
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$2,366.66
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400 mains Main Journal Style, 3.750" Engine Stroke
Comes as a Kit
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| MFG. Part # | 9151236 |
| Brand | Speedway Motors |
| Connecting Rod Type | I-Beam |
| Piston Style | Dish |
| Piston Material | Forged Aluminum |
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855.313.9176Quick and Easy Returns
Return PolicyThese rotating assembly engine rebuild kits are designed for street use and include Keith Black forged pistons, Scat 4340 Pro-Comp I-beam rods and a Scat 4340 forged crankshaft.
All Scat 4340 cranks are 2-piece rear main seal, internally balanced and weigh approximately 51-55 lbs.
These assemblies will require balancing either by us or your machine shop. All kits can be internally balanced.
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.
NOTE: Piston rings are not included and must be purchased separately.
Kit includes:
| KEY SPECS | |
|---|---|
| MFG. Part # | 9151236 |
| Brand | Speedway Motors |
| Connecting Rod Type | I-Beam |
| Piston Style | Dish |
| Piston Material | Forged Aluminum |
| GENERAL | |
| Main Journal Style | 400 mains |
| Engine Stroke | 3.750" |
| Connecting Rod Length | 5.700" |
| Connecting Rod Material | Forged 4340 Steel |
| Connecting Rod Weight | 590 grams |
| Connecting Rod Bolt Diameter | 5/16" |
| Piston Weight | 535 grams |
| Piston Ring Style | C |
| Crankshaft Material | Forged 4340 Steel |
| Rear Main Seal Style | 2-piece |
| Wrist Pin Diameter | 0.9272" |
| Wrist Pin Weight | 132 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 |
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1 Review
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Great Forged assembly
5.0
a year ago
1320 truck
Apple Valley Ca
Verified
No block or cam clearance issues with this assembly. Rod and pistons are very close in weight. Good quality parts.
Would Recommend
Showing 1 of 1 reviews
2 Questions • 2 Answers
If this assembly is internally balanced, will I still have to run an external harmonic dampener?
by T
• 7 years ago
1 answer
View Answer
I was looking into the dished pistons for my small block 400 ci and I'll be running a set of dart iron eagles 220cc runner 72 cc combustion chamber 16 2.05 valves with lunati cam 500/500 gross lift would it's have proper valve to piston clearance and also what would the compression be? Thank you for your time hope to hear back soon
by Zac
• 11 years ago
1 answer
View Answer
2 of 2 questions shown
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