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What Are the Basic Specifications for a BP3830CTC1 383 Stroker Engine? (DISCONTINUED) 

If you're trying to identify a BP3830CTC1 engine or need basic information for service, parts ordering, or installation, this article summarizes the key specifications from the original BluePrint build documentation.

 What Is a BP3830CTC1 Engine?

The BP3830CTC1 is a 383 cubic inch Small Block Chevrolet stroker V8 built using a 350 Chevy block and a 3.750-inch stroke crankshaft.

Basic Specifications

  • Engine Model: BP3830CTC1
  • Displacement: 383 CID
  • Configuration: V8
  • Block: Chevrolet 350 4-bolt main
  • Rear Main Seal: One-piece rear main seal
  • Balance: Externally balanced front and rear
  • Dipstick Location: Passenger side
  • Water Pump: Long-style standard rotation
  • Fuel Pump: Mechanical fuel pump provision
What Cylinder Heads Does It Use? The engine was built with Vortec cylinder heads.

Cylinder Head Information

  • Casting Numbers:
    • 10239906
    • 12558062
  • Production Head Numbers:
    • HP4129N
    • HP4129NC
What Rotating Assembly Is Used?

Crankshaft

  • Manufacturer: Scat
  • Part Number: 9-350-3750-5700L
  • Stroke: 3.750 inches
  • Balance Style: External balance

Connecting Rods

  • Reconditioned 350 connecting rods
  • New Pioneer or ARP rod bolts

Pistons

  • Part Number: KB135
  • Type: Hypereutectic dished piston
What Bore Size Does It Have? The build sheet specifies:
  • Standard Bore: 4.000"
  • Finished Bore: 4.040" (.040 over)
Always verify actual bore size before ordering pistons or rings. What Camshaft Was Used? The documentation references:
  • Z010
  • MAP22305
The camshaft was required to be installed at:
  • 106°-107° intake centerline
Important Service Information Before ordering replacement parts, verify:
  • Block casting number
  • Bore size
  • Head casting number
  • Crankshaft balance style
  • Harmonic balancer type
  • Flywheel/flexplate balance type
  • Piston part number

Using incorrect internally-balanced components on this engine can cause vibration because the BP3830CTC1 was originally built as an externally balanced engine. 

 

 Frequently Asked Questions

Is the BP3830CTC1 a 383 stroker?

Yes. It is a 383 cubic inch Small Block Chevy stroker engine.

Does it use Vortec heads?

Yes. The original build used Vortec iron cylinder heads.

Is it internally balanced?

No. It is externally balanced front and rear.

What pistons were originally installed?

KB135 hypereutectic dished pistons.

What crankshaft stroke does it use?

3.750-inch stroke.

Does it have a one-piece rear main seal?

Yes.