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#91510252
Street Small Block Chevy 400 Rotating Assembly, Dish, 6 Inch Rod
383 C.I.D. 5.7 Rod Length383 C.I.D. 6.0 Rod Length400 C.I.D. 5.7 Rod Length350/377 Balance383/400 Balance
$1,328.99
/kit
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$1,348.29
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Product Summary
400 mains Main Journal Style, 3.750" Engine Stroke
Comes as a Kit
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Key Specs
| MFG. Part # | 91510252 |
| Brand | Speedway Motors |
| Connecting Rod Type | I-Beam |
| Piston Style | Dish |
| Piston Material | Hypereutectic Aluminum |
Need To Know
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Speedway Motors 91510252 Details
These rotating assembly engine rebuild kits are designed for street use and include Keith Black Hypereutectic pistons, Speedway 5140 I-beam rods, main/rod bearings and a Speedway Cast Steel crankshaft. Rings not included. Journals are standard size.
Due to larger journal side radius on this aftermarket crankshaft, you must use Clevite H-series, King bearings (included in kit) or equivalent.
These assemblies will require balancing either by us or your machine shop.
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.
Kit features:
- Speedway Cast Steel Crankshaft
- Two-piece rear main
- 80-60-06 cast steel
- Speedway 5140 I-Beam Connecting Rods
- Heat treated, shot peened and magnafluxed
- 6.0 " length
- Bushed pin
- 597 grams
- Set of 8 rods
- KB Hypereutectic Dished Pistons
- T-5 heat treated aluminum construction
- 4.000 " bore pistons available in .030, .040, or .060 sizes
- 4.125 " bore pistons available in .030 or .040 sizes
Kit features:
- Speedway Cast Steel Crankshaft
- Two-piece rear main
- 80-60-06 cast steel
- Speedway 5140 I-Beam Connecting Rods
- Heat treated, shot peened and magnafluxed
- 6.0 " length
- Bushed pin
- 597 grams
- Set of 8 rods
- KB Hypereutectic Dished Pistons
- T-5 heat treated aluminum construction
- 4.000 " bore pistons available in .030, .040, or .060 sizes
- 4.125 " bore pistons available in .030 or .040 sizes
Speedway Motors 91510252 Specifications
Speedway Motors 91510252 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 91510252 |
| Brand | Speedway Motors |
| Connecting Rod Type | I-Beam |
| Piston Style | Dish |
| Piston Material | Hypereutectic Aluminum |
| GENERAL | |
| Main Journal Style | 400 mains |
| Engine Stroke | 3.750" |
| Connecting Rod Length | 6.000" |
| Connecting Rod Material | Forged 5140 Steel |
| Connecting Rod Weight | 620 grams |
| Connecting Rod Bolt Diameter | 3/8" |
| Piston Weight | 430 grams |
| Piston Ring Style | C |
| Crankshaft Material | Cast Steel |
| Rear Main Seal Style | 2-piece |
| Wrist Pin Diameter | 0.9272" |
| Wrist Pin Weight | 145 grams |
| Main Journal Diameter | 2.648" |
| Rod Journal Diameter | 2.10" |
| Bearing Construction | Bi-metal |
| Bearing Undersize | Standard |
| Narrowed Bearing | Yes |
| Coated Bearing | No |
| Sold in Quantity | Kit |
Ratings & Reviews
Ratings & Reviews
Questions & Answers
7 Questions • 7 Answers
Questions & Answers
7 Questions • 7 Answers
Are the pistons 4032 or 2617 hypereutectic?
by Jeffrey
• 9 months ago
1 answer
View Answer
What harmonic balancer and flywheel would be needed if l use you balancing option?
by Jeffrey
• 10 months ago
1 answer
View Answer
Is this a d-dish piston?
by Matt
• 3 years ago
1 answer
View Answer
Are these pistons grooved to have full floating piston pins and are the pin retaining clips included
by RICHARD
• 4 years ago
1 answer
View Answer
What compression ratios with 64 and 72 cc heads? etc?
by Larry
• 6 years ago
1 answer
View Answer
What is the dish volume and the compression distance
by Aero
• 9 years ago
1 answer
View Answer
I was wondering if the block needs too be clearenced for the 6 inch rods and if I would have too use a 520 base circle camshaft?
by fast eddie
• 15 years ago
1 answer
View Answer
7 of 7 questions shown
Fitment
Fitment
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