SBC 383ci Street or Marine Short Block

SBC 383ci Street or Marine Short Block


This short block is direct replacement street or marine grade 100% CNC machined on a Centroid 4-Axis Block CNC machining center to blueprint perfection better than when it was made. Acceptable to 400hp with no power adders and is pump gas friendly with brass or stainless steel freeze plugs for marine applications. NO CORE REQUIRED


Core block hot tanked • Align honed (ind) • CNC blueprint bored • CNC blueprint square decked 90° from crank and cam bar • Plate honed up to 4.060″ • Hot washed, brass freeze plugs and cam bearings installed • Assembled with the rotator listed below (4.030 x 4.030 bore x 3.75 stroke x 8 x .7854 = 383ci) NOTE, Dead on 45° bores and deck surfaces can only be machined with a 4 axis CNC machining center with Probing to know where the exact angles are off the cam and crank. Its impossible with a 3 axis machine and down right dirty with old boring bar technology.


Scat 3.750″ Cast Crank internally balanced on a CWT Multi-Bal 5000 Machine to neutral .20 oz (no weight on the flex-plate or flywheel required) ­ ­• 5.700″ I Beam New 5140 Steel Rods • Up to 10.25:1 Compression with Flat top Speed Pro Cast Pistons • Moly Rings • Clevite or King Main and Rod Bearings • Rear Main Seal


DART #31162111 SHP Special High Performance 4.000″ Bore Race block
+ $1375.00
JE SRP, WISECO PRO TRUE or Mahle Forged Flat Top or Dish Pistons
+ $ 495.00
Internally Balanced 4340 Steel 3.750″ Crank, 5.7″ I-Beam Rods, Forged Mahle, JE SRP, WISECO Pro True Forged Flat Top or Dish Racing Pistons
+ $ 495.00
COMPETITION CAMS MAGNUM Hydraulic Flat Tappet Cam Shaft, Lifters and Timing Components Kit Installed
+ $ 475.00
Hydraulic or Solid Pro Street Roller Cam and Lifter Kit with Billet Professional 9 Keyway Indexable Timing Set
+ $ 975.00
Deluxe Short Block Kit Installed
+ $1295.00

Cam Shaft Kit

  1. COMPETITION CAMS Hydraulic Flat Tappet Cam Shaft up to .501″ Lift
  2. 16-Hydraulic Flat Tappet Lifters
  3. Double Roller Timing Set
  4. Camshaft Fastener Kit
  5. Degree Camshaft

Deluxe Short Block Kit

  1. COMPETITION CAMS .501″ Hydraulic Flat Tappet Cam Shaft Kit Installed
  2. Brand New Aluminum Timing Cover Kit Installed
  3. Melling M55HP Oil Pump Kit and Proper Pick Up Tube
  4. Moroso 7 Quart Correct Oil Pan Kit Installed
  5. New Harmonic Dampener TDC Verified
  6. All Gaskets to Finish
  7. Short Blocks Come with Blue Print and Balance Sheet, Product Info, Stickers and Contingency Information

    Some Components May Be Subject To Change of Equal Value Due To Availability. Free Freight Applies up to $200 on This Advertised Item Shipped To A Commercial Address or The UPS Terminal Closest To Your Zip Code For Pickup In The 48 States. Any Charges Over $200, Residential, Out-Of-Area, Lift Gate Service, Difficult Handling Fees, Extra Insurance, Apply If Requested.

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