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Scat Engine Components 1-91055 Series 9000 Cast Street/Strip Rotating Assembly 383ci SBC

Manufacturer

Picture for manufacturer Scat Engine Components

Part Number

1-91055
5 reviews
Sale Price

$1,586.98

2 left at this price

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Usually delivered within 2 days

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Product Details

The Scat Engine Components 1-91055 is a complete Series 9000 Cast Street/Strip Rotating Assembly for Small Block Chevy applications, displacing 383 cubic inches with a 3.750-inch crankshaft stroke on 350 main journals. This unbalanced rotating assembly is engineered for performance street and strip engine builds, delivering a reliable foundation for high-output SBC builds.

Key Specifications:

  • Engine Displacement: 383 cubic inches (6.3L)
  • Bore: 4.030 inches
  • Crankshaft Stroke: 3.750 inches — Series 9000 cast steel
  • Rear Main Seal: 1-piece
  • Connecting Rod Length: 5.700 inches (center-to-center), I-beam design
  • Rod Bolts: ARP 3/8 in. cap screw bolts
  • Piston Style: Hypereutectic flat-top with floating wrist pin
  • Piston Rings: Included
  • Crankshaft Balance: 1,830 to 1,850 grams with standard weighted flywheel, neutral balancer, and one-piece Mallory in #1 counterweight
  • Assembly Balance: Unbalanced (external balancing required)

Complete Assembly Includes:

  • Series 9000 cast steel crankshaft
  • I-beam connecting rods with ARP 3/8 in. cap screw bolts
  • Hypereutectic flat-top pistons with floating wrist pins
  • Piston rings
  • Main and rod bearings

Note: This unbalanced assembly does not include a flexplate or harmonic damper. Rod and main bearings are sourced from industry-trusted suppliers such as King, Federal Mogul, or Clevite 77 depending on application. Piston rings feature a plasmamoly facing for durability and sealing performance.

Products specifications

Actual Engine CID

383

Balanced

No

Bore (in)

4.030 in.

Bore (mm)

102.362mm

Cam Bearings Included

No

Camshaft Included

No

Connecting Rod Beam Style

I-beam

Connecting Rod Material

Forged 5140 steel

Connecting Rods Included

Yes

Crankshaft Included

Yes

Crankshaft Material

Cast iron

Engine Balance

Internal/External

Engine Stroke (in)

3.750 in.

Main Bearing Undersize (in)

Stock

Main Bearing Undersize (mm)

Stock

Main Bearings Included

Yes

Notes

Crankshaft balances at 1,830 to 1,850 grams with standard weighted flywheel, neutral balancer, and one-piece Mallory in number one counterweight. Connecting rods include ARP 3/8 in. cap screw bolts.

Oil Pump Included

No

Piston and Ring Oversize (in)

0.030 in.

Piston Head Volume (cc)

+4.00cc

Piston Material

Forged aluminum

Piston Ring Facing Material

Plasmamoly

Piston Rings Included

Yes

Piston Style

Flat top, with two valve reliefs

Pistons Included

Yes

Plastigage Included

No

Quantity

Sold as a kit.

Rear Main Seal Style

1-piece

Rod Bearing Undersize (in)

Stock

Rod Bearing Undersize (mm)

Stock

Rod Bearings Included

Yes

Wrist Pin Style

Floating

Great price, exactly what I needed. I will definitely return to Autoplicity for future autoparts orders! Thanks!

My son lives about 1500 miles from me. He had asked me to get him an Industries SuperFlow Hi-Volume Air Compressor for Christmas. <br>With a couple of click on my computer, the compressor was ordered to be shipped to him and was paid for. He had the exact compressor he requested within five days.(and that included the weekend)<br>One word sums up my experience---EASY

Purchase process an amount of time from purchase, an product being shipped is short an sweet!

I ordered this product and Wednesday in the morning and it was on my door step Thursday morning with regular shipping. The ordering process was super easy and the price was $35 cheaper than any other online retailer. The Rack is awesome, easy to assemble took me about 20 minutes by myself, put on my jeep hooked up the bikes and off I went, fantastic design, I highly recommend the Rola NV2 bike rack and highly recommend Autoplicity

Very quick service and lowest price.

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