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383 Chevy Stroker Turn-Key Crate Engine With 450 HP
Great Strip/Street Engine For The Money

Chevy 383 Crate Engine 

* Engine Shown With Optional Upgrades*

Great Strip/Street Engine For The Money


383 with 450 HP stroker engine has a 3.750 stroke which delivers an extremely high amount of torque, you have to experience one to know how it feels.  This engine package delivers a lot of punch for your money.  This is what most of our customers prefer when building there strip/street car. Engine can be custom painted to match your vehicle at your request. We can also equip your engine with the exclusive March Performance serpentine belt system.  We can also assist you in choosing the proper transmission and stall speed converter combination for your vehicle and have it shipped directly to you as your performance crate engine is being built.

WOW 0-60 3.38 Sec's  Check Out Track Tested Results Of Our 383 450HP

Stroker Engine Track Slips Don't Lie Click Here

See Below The Quality Of Parts We Use In Our Engines
Short Block Assembly:
  • Fully machined seasoned factory roller 4 bolt main block
  • Block painted with 3 coats of high temp ceramic engine paint customer’s choice of color
  • Eagle steel crankshaft 3.750 stroke
  • Eagle I-Beam connecting rods with ARP bolts and bushed pins
  • High performance pistons (Speed-Pro, Keith Black, SRP, or Mahle)
  • Performance rods and main bearing (Clevite, King or Federal Mogul)
  • Performance rings hand filed to match application
  • ARP main bolts
  • The complete rotating assembly is balanced
Fully Dressed Crate Engine Assembly:
  • All The Above Plus The Following:
  • Comp Cams custom ground hydraulic roller camshaft
  • Hydraulic roller lifters
  • Three piece double roller timing set
  • Performance aluminum cylinder heads (See options below)
  • Screw in studs and hardened guide plates
  • Manley chrome moly push rods
  • Performance roller rockers
  • Melling high volume oil pump and screen
  • Chrome oil pan
  • Chrome dipstick and tube
  • Chrome timing cover
  • Fel-Pro gaskets
  • Performance intake manifold
  • Chrome thermostat housing
  • Holley Ultra HP carburetor w/ electric choke
  • Chrome air cleaner
  • Pro Billet distributor (Requires MSD 6AL Ignition Control)
  • MSD Blaster II coil
  • MSD chrome bracket
  • Auto Lite spark plugs
  • Taylor 8mm ignition wires (Color Of Choice Black, Red, Blue, Yellow, Green, Orange No Extra Charge)
  • A new water pump
  • Chrome valve covers
  • Chrome breather
  • New Performance balancer
  • Engines are photo documented during the building process
  • Each engine is dyno tested, timing set and carburetor adjusted for optimum performance
  • We video tape your engine and send you a copy

Only $7,450



**Customer Review of Our Chevy 383**

I have sent pictures of my 57' Chevy. The engine looks PHENOMINAL and sounds GREAT! I have people wanting to take pictures all the time and needless to say there is no engine like it or can even compare. Also, thanks for the good customer satisfaction

I just would like to say THANK YOU STEVE! I am above and beyond satisfied with the engine.

G. Garcia                                                                                                                                       

                                                                                                                                                     Click here for more Proformance Unlimited crate engine reviews


Customize Your Crate Engine With These Products


Pulley Systems

March Performance
Alternator Only

This system includes the following items:

  • 105 Amp alternator chrome
  • Alternator pulley
  • Crankshaft pulley
  • Water pump pulley
  • Aluminum bracket with fan & nose cover
  • Belt tensioning bar
  • Serpentine belt
  • Installed on your engine

Add $1,000

Alternator & Power Steering

This system includes the following items:

  • 105 Amp alternator chrome
  • Power Steering Pump
  • Alternator pulley
  • Crankshaft pulley
  • Water pump pulley
  • Power steering pump pulley
  • Aluminum bracket with fan & nose cover
  • Belt tensioning bar
  • Serpentine belt
  • Installed on your engine

Add $1,675

Alternator, Power Steering &
Air Conditioning

This system includes the following items:

  • 105 Amp alternator chrome
  • Power Steering Pump
  • AC Pump
  • Alternator pulley
  • Crankshaft pulley
  • Water pump pulley
  • Power steering pump pulley
  • AC pump nose cover
  • Aluminum bracket with fan & nose cover
  • Belt tensioning bar
  • Serpentine belt
  • Installed on your engine

Add $2,100

Block Options

Dart SHP Block: 

  • Cast Iron
  • Splayed 4-Bolt Main
  • 1-Piece Rear Main Seal
  • Factory Roller
  • 1-Piece Rear Main Seal

Add $1,200

Cylinder Heads Options

Edelbrock E-Street Cylinder Heads

  • Combustion Chamber Volume (cc): 64
  • Intake Runner Volume: 185cc
  • Exhaust Runner Volume: 60cc
  • Intake Valve Size: 2.02
  • Exhaust Valve Size: 1.60
  • Assembled With Comp Cams Performance Valve Springs

Add $0

cylinder heads 

AFR Cylinder Heads:

  • Fully CNC Ported
  • Combustion Chamber Volume (cc): 65
  • Intake Runner Volume: 180cc
  • Exhaust Runner Volume: 64cc
  • Intake Valve Size: 2.02
  • Exhaust Valve Size: 1.60

Add $800


Holley Carburetor
(Includes braided fuel line for carburetor)

  • 750CFM
  • Model 4150 Ultra HP
  • Mechanical Secondaries
  • Electric Choke
  • 4 Corner Idle
  • Braided Fuel Line  

Included With Package


MSD Starter

  • Dyna Force Starter
  • Small Block Chevy
  • Big Block Chevy
  • High Torque
  • 153 and 168 Tooth
  • Straight Bolt Pattern

Add $275

MSD 6AL 6420

MSD 6 Series Ignition Box

  • Higher output with 530 primary volts and 135mJ of spark energy
  • Efficient components use less current to produce more power
  • Set an rpm limit on the 6AL with two rotary dials in 100 RPM increments
  • Same bolt pattern as the original 6AL with a lower profile housing
  • Built-in LED for system checks
  • All wires exit the same side through a locked, sealed connector

Add $300



  • 153 or 168 tooth

Add $375


Fuel Delivery Systems

The Atomic EFI outshines the competition in ease of installation and performance! The MSD annular ring injection design produces an air/fuel charge with much better mixture as well as an even distribution among the cylinders that our competition cannot match. Better AFRs equal better idle quality, better starting, and better overall drivability throughout the rpm range. You and your engine will be glad when you Go Atomic.

 Kit Includes:

  • Throttle Body Assembly (An exact swap for a 4150 Holley)
  • (4) port style injectors
  • EMS (Engine Management System)
  • Comprehensive Instruction Manual
  • All harnesses and connectors (Much less harnessing than other systems)
  • Idle Air Control - Built in to the throttle body
  •  Coolant Temperature Sensor - 3/8-NPT threads for most manifolds
  • Throttle Position Sensor
  • Wideband O2 Sensor and cable (Many competitive units are narrowband)

Add $2,700

***Firmware updates can be found at the following link:
Webber 48mm Stack Induction

Inglese Fuel Injection Stack Induction:

  • Inglese Stack Induction Aluminum Intake Manifold
  • Inglese 50mm Throttle Bodies
  • Chrome Stacks
  • F.A.S.T EZ 2.0 EFI System
  • Fuel Pump And Line Kit

Add $ Call

Chevy 350-475hp

Edelbrock Dual Quad's:

  • Performer RPM Dual Quad Air-Gap intake With EnduraShine Finish
  • 2 Thunder Series AVS carburetors With EnduraShine Finish
  • Progressive throttle linkage
  • Fuel line
  • Edelbrock Chrome Dual Carburetor Air Cleaner

Add $1,300

Dress Up

Custom Paint

Custom Painted Engine:

  • Have a custom painted car?  Why not have a custom painted engine?  Give us your paint code and we'll do the rest.

Add $350

Chevy Black Out Kit

Old School Look:

  • One of the most popular and durable dress-up kits available today! This black crinkle kit with its distinctive look and boldly striking wording comes with everything you need for race day or show day!

Add $245


TH350 Transmission

Automatic Transmission Package's:

  • The world’s finest transmission packages, custom made for Proformance Unlimited.
  • Each transmission package is tailored to your engine, and test driven to ensure maximum performance.
  • They build them from Mild to Wild, if you’ve got the horsepower, they have the transmission.

TH-350 Or TH-400 Add $1,800

TH-350 Or TH-400 Add $1,800

Whether your vehicle is a hot rod, street car, race car, or even a tow truck, here at Proformance Unlimited we are here to help design and build the combination that best suits your vehicles needs. Please browse our engine combinations listed below or custom design one of your own. Proformance Unlimited is best known for our precision custom designs. From that special built stroker engine to that turn-key drop in ready crate engines, call Doug or Steve and we will be happy to answer any of your questions.

All engines are custom built to order for total customer satisfaction

Credit cards accepted

Call us today for a quote


450HP Short Block


450HP Complete

  7450   Updated 04/20/2016

Copyright © 2015 Proformance Unlimited Inc.