383 Signature Forged Short Block

Reid’s Speed Shop’s 383 Signature Short Block

383 Signature Short Block

The Foundation For Your Dream Small Block.

Built around the Summit Racing SPC heavy-duty aftermarket block and an Eagle forged rotating assembly, the 383 Signature Short Block is designed for enthusiasts who want complete control over their cylinder head, induction, and accessory choices without compromising on the quality of the engine's foundation.

Every short block is professionally machined, precision assembled, and equipped with the premium oiling system, timing components, hydraulic roller camshaft, and supporting hardware required to create a dependable, high-performance Small Block Chevrolet.

Rather than starting with a basic assembled short block, you'll receive a premium performance foundation built using the same attention to detail and component selection found throughout every Reid's Speed Shop engine package.

Whether your goal is a dependable 425-horsepower street engine or a future forced-induction combination, the foundation remains the same. Built around the Summit Racing SPC aftermarket block and Eagle forged rotating assembly, this package provides the strength to support approximately 700+ horsepower with the proper supporting components.

Starting out at $7,500

Typical investment varies based on component options, and customer-selected upgrades.

Quick Look

Engine Block

  • Summit Racing SPC Heavy-Duty Aftermarket Engine Block

  • Rated for 700+ Horsepower(with proper supporting components)

  • Brand-New Class 35 High-Strength Iron Casting

  • Cast in Germany • Precision Machined in the USA

  • Priority Main Oiling System

  • 4-Bolt Nodular Iron Main Caps with Splayed Outer Bolts

  • OE Hydraulic Roller Camshaft Compatible

  • Blind Head Bolt Holes

  • Cast-In Stroker Clearance

  • One-Piece Rear Main Seal Design

Rotating Assembly

  • Eagle Pro Street 4340 Forged Rotating Assembly

  • 4340 Forged Steel 3.750" Stroke Crankshaft

  • 4340 Forged FSI I-Beam Connecting Rods

  • 7/16" ARP 8740 Rod Bolts

  • Forged Icon Performance Pistons

  • Performance Rod & Main Bearings

  • Compression Ratios Available from 9.3:1–11.2:1

Valvetrain & Timing

  • Your Choice of Hydraulic Roller Camshaft

  • Stage 1–4 Camshaft Packages or Custom Grind Available

  • Premium Morel Hydraulic Roller Lifters

  • Cloyes Billet 9-Way Adjustable Double Roller Timing Set

  • Torrington Cam Bearing

  • ARP Camshaft Hardware

Oiling & Sealing

  • Complete Melling Performance Oiling System

  • Hardened Oil Pump Driveshaft

  • Properly Set Oil Pickup Depth

  • Oil Pickup Screen Retainer Installed

  • Moroso 5-Quart Stroker Oil Pan

  • One-Piece Oil Pan Gasket

  • Edelbrock Polished Aluminum Timing Cover

  • Timing Pointer & Harmonic Balancer Included

  • ARP Timing Cover & Harmonic Balancer Hardware

Precision Assembly

  • Professionally Machined

  • Blueprint-Assembled

  • Clearances Verified

  • Ready for Your Cylinder Head & Induction Combination

Why Choose a Reid’s speed Shop Crate engine:

When purchasing a crate engine, you have many options available—from large production companies to smaller independent builders. At Reid’s Speed Shop, the difference is simple: this isn’t mass production—it’s personal craftsmanship.

Every engine is carefully assembled with attention to detail and built using combinations that have been thoughtfully researched and proven to work together. Rather than being one of hundreds of engines moving down an assembly line, your engine receives the kind of focus and care that only a small, dedicated shop can provide.

Communication is also a major part of the experience. Throughout the process, customers are kept informed and updated as their engine comes together. Photos and updates are often shared so you can actually see the progress of your engine being built rather than simply receiving a shipment notice when it’s finished.

Whenever possible, customers are also given the opportunity to hear their engine run before delivery. Whether in person or through a video demonstration, this allows you to see and hear the engine come to life—giving you confidence in how it runs, idles, and performs before it ever leaves the shop.

At Reid’s Speed Shop, the goal isn’t to move engines as quickly as possible—it’s to build them correctly and ensure every customer feels confident in the investment they’ve made. Building engines is more than just a job here; it’s a genuine passion and a craft that is taken seriously.

When you choose Reid’s Speed Shop, you’re not just purchasing an engine—you’re working directly with the person building it, ensuring transparency, accountability, and a level of care that large-scale production simply cannot offer.

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