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Blown GM 4.3 90° V6 Turn Key Crate Engine 450 HP

Availability: In stock


Quick Overview

GM 4.3L 90° V6 Street Turn Key Crate Engine making 450 HP w/ Supercharger USA 471 Blower

Blown 4.3 V6 Chevrolet Crate Engine

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  • Blown 4.3 V6 Chevrolet Crate Engine
  • Installing 4 Bolt Caps 4.3L
  • 4.3 Alighn Hone w/ 4 Bolt Caps
  • Torque Plate Hone V6
  • Decking 4.3 GM v6
  • Balancing 4.3L V6
  • Performance 4.3 Short Block
  • Performance 4.3 Short Block
  • Performance 4.3 Long Block
  • 4.3 Comp Ultra Pro Magnum Rockers
  • Complete Rear View Blown 4.3
  • Dyno Testing Blown 4.3 V6
  • Side View Blown 4.3


Chevy GM 4.3 block

  • Thermal cleaned and shot penned
  • Magnufluxed
  • Bored & Power Stroke Honed (centered with mains)
  • 4 Bolt caps installed
  • Align honed (main bore housing where crank goes)
  • Decked for flat head surface
  • New Clevite cam bearings installed
  • New Brass freeze plugs installed
  • New oil galley plugs installed
  • Painted Color Choice


 Rotating assembly

  • New Billet Crankshaft
  • New Eagle H-beam 5.7" 
  • Clevite Rod & Main Bearings
  • AutoTec Forged Dish Top Pistons 
  • Total Seal rings
  • Rotating assembly balanced to race specs with printed spec sheet(.02 of oz. inch or within 2 grams)


Brodix V6-10 Lil Brodie Aluminum Cylinder Heads
  • 210cc Intake Runners
  • 67cc Combustion Chambers
  • 2.080" and 1.600" Stainless Steel valves installed
  • Bronze Valve Guides
  • All seats have 4 angels with radius for maximum flow  
  • Matching roller valve springs, hardened retainers, and hardened keepers to camshaft


Valve Train
  • Comp Custom Grind Hydraulic Roller Camshaft
  • Choppy Idle 
  • Hydraulic Roller Lifters
  • Comp Cams 3/8 Screw in studs
  • Comp Cams Guide plates
  • ARP head bolts
  • Comp Cams 5/16" hardened pushrods
  • Comp Cams Ultra Pro Magnum 1.6 Roller Rocker Arms
  • Cloyes Double roller timing set



Fuel & Ignition


  • Quick Fuel SS 750cfm Carburetor
  • Supercharger USA 471 Polished Blower Kit 
  • Blower belt & pulleys for 4.5% overdrive
  • 1,2, or 3 V bely pulley
  • MSD Pro Billet Distributor
  • MSD 8.5mm Plug Wires
  • NGK Spark Plugs


Also Includes



  • OEM oil pan & matching oil pump pick up
  • Melling high pressure oil pump
  • Melling Hardened 1 piece oil pump shaft
  • Victor Complete Gaskets
  • GM Perfomance Aluminum Valve covers 
  • Baffels,Grommets & Billet Breathers included
  • Proform GM Performance Bowtie chrome timing cover  
  • Powerbond  Harmonic Ballancer
  • Mr Gasket Timing Tab Pointer 
  • All new oil pan,timing cover,valve cover,& intake bolts



This engine will be Dyno Tested and run through the break in process.We will have it tuned in with the correct timing.Carburetor will be jetted for performance as well as drivability.

 Engine makes 450hp @ 6500rpm & 400tq @ 5100 rpm on premium pump gas

Engine is professional race prep assembled in controlled environment.  Each engine is pre-assembled to check all tolerances on each bearing, crank journal, end play.  Piston clearance on cylinder,  piston to valve,  & deck clearance checked & set.  Head cc's are checked.  Each engine has the static & dynamic compression ratio set for maximum horsepower with desired fuel octane. Camshaft degree set along with correct  valve train geometry.  Oil pump pickup clearance set for proper oiling.  Each bolt is torqued to proper specifications using top quality calibrated torque wrench.  We also take pride in a great paint job on each engine for the best look in your vehicle.  You can not compare our engines to others it would be like apples to oranges. They just aren't the same.

Engine includes 1 year warranty & lifetime customer service!

This engine takes 6-8 MONTHS to build due to the long wait on the billet crankshaft

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