Chevrolet 383ci Stroker Small-Block V8 Engine

Summit Racing MAX-EFI 500 | Dyno-Tested 416 HP

This Chevrolet 383ci stroker V8 engine is based on a four-bolt main small-block Chevy platform that was professionally bored and stroked to achieve 383 cubic inches of displacement. The engine is equipped with a Summit Racing MAX-efi 500 electronic fuel injection system and has been dyno tested but has not been installed in a vehicle.

A dynamometer test performed in November 2025 recorded output figures of 416 horsepower and 439 lb-ft of torque.

Engine Specifications

• Engine Type: Chevrolet Small-Block V8

• Displacement: 383 cubic inches

• Block: Cast iron, four-bolt main

• Bore: 0.030″ over

• Stroker Kit: Summit Racing 383 stroker kit

• Fuel System: Summit Racing MAX-efi 500 electronic fuel injection

• Induction: EFI throttle-body system

• Assembly Finish: Orange-painted block

Performance Data

• Dyno Test Date: November 2025

• Maximum Output:

  • 416 horsepower

  • 439 lb-ft of torque

• Installation Status: Never installed in a car

Cylinder Heads & Internal Components

• Cylinder Heads: Summit Racing aluminum cylinder heads

• Rotating Assembly: Included with Summit Racing 383 stroker kit

• Block Machining: Bored 0.030″ over during rebuild

Fuel Injection System

• System: Summit Racing MAX-efi 500

• Included Components:

  • EFI controller

  • Wiring harness

  • Supporting literature

• Controller Status: Preloaded tune installed, per the seller

Condition

• Freshly assembled stroker engine

• Dyno tested only

• No road or track use

• Not installed in a vehicle

Highlights

• 383ci stroker configuration

• Four-bolt main small-block Chevy foundation

• Summit Racing MAX-efi 500 electronic fuel injection

• Dyno-proven 416 HP and 439 lb-ft

• Preloaded EFI tune included

• Suitable for street, performance, or project applications

Ideal Applications

• Classic Chevrolet muscle cars

• Street performance builds

• Hot rods and restomods

• Standalone performance engine projects