GM Small Block Compatible 383 c.i. Engine - 432 Horsepower - Power Adder - Short Block Plus
GM Small Block Compatible 383 c.i. Engine - 432 Horsepower - Power Adder - Short Block Plus
GM Small Block Compatible 383 c.i. Engine - 432 Horsepower - Power Adder - Short Block Plus

GM Small Block Compatible 383 c.i. Engine - 432 Horsepower - Power Adder - Short Block Plus

SKU: BP38321SP

GM Small Block Compatible 383 c.i. Engine - 432 Horsepower - Power Adder - Short Block Plus

SKU: BP38321SP

Horsepower & Torque: 432 Horsepower / 450 FT. LBS. Torque

Compression Ratio: 9.5:1 with 64cc Head and .041" Thick Gasket - 18 cc Dish Volume

Camshaft: Hydraulic Roller Cam - .495 Intake / .502 Exhaust Lift and 220 Intake / 224 Exhaust Duration @ .050 - 114° LSA

Pistons: Forged

Crankshaft: Forged Steel Crank - 3.750" Stroke and 5.700" Rods

Regular price $5,349.00
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Overview:

BluePrint’s BP38321SP GM Small Block compatible performance crate engine are dyno tested at our factory with a Holley Classic 750 CFM Carburetor, and H8002K Cylinder heads to get 432 horsepower and 450 minimum torque values. This engine features a 4-inch bore which mathematically yields a 377ci with a 3.75-inch stroke. This customizable engine comes with timing cover, harmonic balancer, oil pan, hydraulic roller cam with 1.5-inch rocker arm, and a high-volume oil pump. 

Description:

  • Horsepower & Torque: 432 Horsepower / 450 FT LBS. Torque
  • Compression Ratio: 9.5:1
  • Forged Pistons
  • Forged Crank

Block:

  • BluePrint Engines High Strength Cast Iron Block
  • 4 Bolt Main
  • 1 Piece Rear Main Seal
  • 4.00" Bore
  • Passenger Side Dipstick 
  • Align Honed Main Bearing Bore
  • Cylinders Honed on Computer-Controlled Machine to Within .0002 Straightness and Roundness
  • Cylinders are Sonic Tested for Thickness

Rotating Assembly:

  • New Forged Crankshaft
  • 3.75" Stroke
  • Forged Pistons, 18cc Dish
  • Forged Rods with 150,000 PSI Bolts
  • High Volume Oil Pump
  • Hydraulic Roller Cam
  • Heavy Duty Double Roller Timing Set
  • Harmonic Balancer

Cam Specs w 1.5 Rocker Ratio:

  • Cam Type: Hydraulic Roller
  • .495 Intake / .502 Exhaust Lift
  • 220 Intake / 224 Exhaust Duration
  • @ .050-114 Degree Lobe Separation

Ignition Timing:

  • 34 Degrees Total (at 3500 RPM)

Also Includes:

  • Oil Pan
  • Timing Cover 
  • Harmonic Balancer

Recommended Break in Oil: BPP710 (Click Here)

Recommended Service Oil: BPP10W30 (Click Here)

Recommended Oil Filter: BPP51061 (Click Here)

Notes:

  • This engine features a true 4-inch bore, which mathematically yields 377 CID with a 3.75-inch stroke.
  • This engine requires a non-weighted 8" harmonic balancer (included), and late 350ci weighted flexplate/flywheel.
  • The HP and Torque numbers were derived from dyno testing with a 750cfm carb, and with H8002K cylinder heads installed.
  • Not for use in pollution-controlled vehicles.

*A Bronze Distributor Gear is NOT Recommended on this Engine.

BluePrint Engines recommends the parts and specifications listed below.  If you prefer to install a different part, your engine may not produce the horsepower recorded on your dyno sheet. 

Fuel Delivery Type: Carbureted 750CFM +, pending cylinder head choice

Spark Plug: Cylinder head specific

Harmonic Balancer: BPP350 - Non Weighted, 8" diameter

Flexplate/Flywheel: Weighted, 1 pc RMS

Stall Converter: 2400+

Intake Manifold: N/A

Fuel Recommendation: 91 Octane or higher, pending cylinder head choice

Timing (Initial/Total Advance): Initial timing - 10-16° and Total timing 32-34°

Firing Order: 1,8,4,3,6,5,7,2

Recommended Break in Oil : BPP710 (Click Here)

Recommended Service Oil : BPP10W30 (Click Here) 

Recommended Oil Filter ; BPP51061 (Click Here)

Total Oil capacity with production oil pan, and Correct BPP51061 Filter : 5 Quarts

Header Partners:  Click here for our Header Partners and recommendations.

Click here to download a copy of the Installation Guide that came with your BluePrint engine.

BETTER THAN THE REST.

The satisfaction of our customers is our highest priority at BluePrint Engines. We use quality components to balance your engine's rotating assembly within two grams of spec. We dyno test your crate engine and certify that it's ready to deliver horsepower and torque.

We give your BluePrint engine the industry's best-in-class warranty for 30-months / 50,000 miles — with the extra confidence only BluePrint can provide. Our warranty applies to individual or professional installations and is fully transferable.

For a detailed overview of our warranty, click here.

IT ALL COMES DOWN TO RESULTS.

We make sure we hit our target horsepower and proper torque with every crate engine. We use an advanced computerized balancer to get our rotating assemblies within two grams, ensuring silky smooth power over the entire RPM range. That's precisely why our engines sound and run better than our competitors.

BRAGGING RIGHTS INCLUDED!

A comprehensive, dyno-generated printout showing these critical specs will accompany your delivered engine. No more guessing or wondering what your installed engine's real-world peak horsepower and torque ratings actually are. Any doubters in the crowd? Simply flash 'em your dyno results!

This engine will be dyno tested before it ships to you at no additional charge (others charge $500)!

RECOMMENDED PRODUCTS:
BluePrint Engines 10w30 Engine Oil - 1 Quart
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BluePrint Engines Crate Engine Break-In Oil — 1 Quart
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TrueBlue Performance Octane Boost
BluePrint Engines TrueBlue Performance Octane Booster
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BluePrint Engines TrueBlue UltraCool Antifreeze Coolant CONCENTRATE
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BluePrint Engines TrueBlue Power Steering Fluid
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BluePrint Engines TrueBlue Transmission Fluid UNIVERSAL ATF/MTF
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Dual Plane Aluminum Vortec Intake Manifold Kit - Square Bore - GM SB Compatible - Natural
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Racing Mechanical Fuel Pump - GM SB 262-400 - 6 Valve - 110 GPH and 7.5 psi
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Mechanical Fuel Pump - GM SB Compatible 262-400 - 2 Valve - 80 GPH and 6 psi
$59.95
8mm Spark Plug Wire Set - 90° Boots - GM SB Compatible
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BPP7938 NGK 7938 BKR5E Spark Plugs - Set of 8
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GM SB and BB Compatible Oil Filter
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Holley 850 CFM Double Pumper Carburetor - Manual Choke - Mechanical Secondaries - 4150
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GM Compatible Fuel Pump Pushrod
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Holley EFI In-Tank Retrofit Fuel Pump - 255 LPH - Return Style
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EFI Billet Aluminum Fuel Pressure Bypass Regulator - 40-75 PSI and -6AN ORB
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Liquid Filled Fuel Pressure Gauge - 0-100 PSI
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GM SB and BB Compatible HEI Ready to Run Distributor - 65K Volt Coil - Black Cap
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GM SB and BB Compatible HEI Ready to Run Distributor - 65K Volt Coil - Black Dust Cover - Red Cap
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HEI Distributor 1-Piece Power and Tachometer Pigtail Harness
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GM SB and BB Compatible ProSeries Ready to Run Tach Drive Distributor - Black Cap with Fixed Collar
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GM SB and BB Compatible ProSeries Ready to Run Distributor - Black Cap and Body with Fixed Collar
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GM SB and BB Compatible ProSeries 2-Wire Distributor - Black Cap
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45K Volt Ignition Coil - Canister Round Oil-Filled - Female Socket - Black
$29.95
50K Volt Ignition Coil - External E-Core - Black
$55.95
Air Cleaner with Flat Base - 14" Chrome
$34.95
Air Cleaner with Flat Base - 14" Black
$34.95
Air Cleaner with Drop Base - 14" Chrome
$34.95
Air Cleaner with Drop Base - 14" Black
$34.95
Aluminum Mechanical Water Pump – GM SB Compatible – Long – Standard Rotation – Satin
$107.95
Aluminum Mechanical Water Pump – GM SB Compatible – Short – Standard Rotation – Satin
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GM SB and BB Compatible Starter – 3 HP – 153 or 168 Tooth Flywheel – Tilton Style - Chrome
$160.95
GM SB and BB Compatible Starter – 3 HP – 153 or 168 Tooth Flywheel – Tilton Style - Black
$137.95
GM SB and BB Compatible Starter – 168-Tooth Flywheel – Denso Style - OEM Finish
$119.95
168-Tooth Steel SFI 14" Flex Plate - 1-Piece Rear Main Seal - External Balance - GM Compatible
$129.95
153-Tooth Steel SFI Flex Plate - 1-Piece Rear Main Seal - External Balance - GM Compatible
$139.95
168-Tooth Iron Flywheel - 1-Piece Rear Main Seal - 11" Clutch - External Balance - GM Compatible
$175.95
BluePrint Parts – Jiggle Pin Thermostat – 180° - GM Small Block, GM Big Block, Mopar Magnum 360, and Ford Small Block Compatible
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