Chevy 383ci / 425 HP Long Block
* Fully Balanced & Blueprinted Assembly

 
Peak Horsepower:
    425 bhp @ 5600 rpm
Operating Range:
    1600 - 6200 rpm
Compression Ratio:
    10.0:1
 
Long Block: $ 4,999.00
* Please note: All of our Engines are Custom Built per Application, and can be Custom Tailored to fit your Specific Needs. Please Allow 2-4 weeks for Delivery.


Specs:  
     Block: Chemically cleaned, Oven Baked, then Stainless-Steel Airless Shot Peened to Remove all remaining Paint & Rust. Visually Inspected, and Fully Magnafluxed to check for cracks. Cylinder Bores Blueprint Bored and Decks Index Squared to the Mains, w/ a Rottler F68A CNC Machining Center. Cylinders then Honed with torque-plates, w/ a Sunnen CV-616 Automatic Cylinder Hone Machine. Block is then de-burred, Modifying Oiling Galleys when needed, and then pressure washed. Durabond one-piece cam bearings and Pioneer Brass Freeze plugs installed, now ready for Assembly in our 'Clean Room'.
     Crank: New Eagle Nodular Iron, Internal Balance
     Rods: New Eagle "SIR" 5.700" Steel Rods
     Pistons: Keith Black HyperEutectic
     Rings: Speed-Pro Plasma-Moly
     Bearings: Clevite or Federal Mogul Performance Main and Rod Bearings, Durabond One-Piece Cam Bearings
     Core Plugs: Pioneer Brass Freeze Plugs
     Lifters: Comp Cams Hydraulic
     Pushrods: Comp Cams Magnums
     Valve Springs: Comp Cams
     Rocker Arms: Comp Cams Magnum Roller Tips
     Timing Set: Comp Cams True Double Roller
     Timing Cover: New Replacement
     Oiling System: Melling High Volume Pump, Pickup Tube and HD Drive
     Oil Pan: New Factory Replacement
     Balancer: New Professional Products Performance Unit, w/ Degree Marks
     Gasket Set: Fel-Pro Performance
     Head Bolts: ARP Performance
     Balancing: Computer Spun Balanced to within 1 gram.
Internally Balanced for smoother RPM's
Cam:
  Manufacturer:
     Comp Cams X-treme Energy
  Type:
     Comp Cams Hydraulic
  Operating Range:
     1500-6000 RPM's
  Idle Quality:
     Noticeable Idle
  Duration:
    Intake: 230° @ .050"
    Exhaust: 236° @ .050"
  Lift:
    Intake: .490"
    Exhaust: .490"
  Lobe Separation:
     110°
Heads:
  Type:
     World Products S/R Torquer's
  Combustion Chamber:
     64cc
  Intake Runner:
    
  Intake Valves:
     2.020 Stainless Steel
  Exhaust Valves:
     1.600" Stainless Steel
  Valve Guides:
     Bronze
  Machining:
    Performance 5-Angle Valve Job, w/ pocket porting. Custom Porting Available!
 

Larry's Auto Machine

175 Leonard Drive
Groton, CT 06340

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