AMC CM-2500 Cylinder Block Boring & Milling Machine

The AMC CM-2500 is a heavy-duty cylinder block boring and milling machine designed to bore, re-bore, and surface-mill engine blocks — from small automotive applications up to larger diesel or industrial blocks — depending on tooling and setup. As a used unit, the CM-2500 gives shops an affordable way to add professional-grade block machining capability, enabling you to handle cylinder re-bores, deck milling, alignment jobs, or full block rebuilds without the expense of a new machine.

 

With robust construction and a large work table, this machine is suited for high-capacity rebuild shops, remanufacturers, or custom engine builders — especially where block reconditioning, sleeving, or custom boring jobs are frequent. When maintained and setup properly, a used CM-2500 remains a very capable and versatile asset for in-house block machining.

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Key Features

  • Wide Boring Capacity — Handles bores from approximately 1.25″ to 13.75″ (32 mm–350 mm), covering a broad range of engines — from small gasoline blocks to larger diesel and industrial blocks.
  • Large Workpiece Support & Heavy Duty Build — The machine supports large blocks up to 5,500 lb and provides a substantial table surface and travel capacity — suitable for long or heavy inline blocks.
  • Combined Boring & Milling Capability — In addition to boring cylinders, the CM-2500 includes milling head/table functionality so you can perform deck surfacing or block-face milling in the same setup — useful for block deck machining or aligning surfaces post-bore.
  • Variable Spindle & Feed Speeds for Precision — Spindle speeds from 50–1200 RPM, and variable feed rates allow controlled boring or milling depending on bore size, material, or required finish.
  • Table Travel & Flexibility for Multiple Configurations — The table offers significant traverse lengthwise (over 100″) and cross movement — useful for accommodating different block sizes, over-bore setups, or multi-cylinder bores in one pass.
  • Cost-Effective Used Option for Block Reconditioning Work — Compared to buying new equipment, a used CM-2500 reduces capital cost while still offering most of the original machine’s capacity — a good fit for shops expanding block-rebuild services or launching reman operations.
Specification Value
Model AMC CM-2500 Cylinder Block Boring & Milling Machine (Used)
Boring Range 1.25" – 13.75" (32 – 350 mm) with optional spindles
Max Workpiece Weight Up to 5,500 lb (approx. 2,500 kg)
Spindle Speed 50 – 1,200 RPM
Boring Feed Rate 0.8 – 59 in/min (20 – 1,500 mm/min)
Table Surface / Travel Table: 100" × 23.6"; lengthwise traverse 105"; cross travel 5.5"
Milling Capacity Milling length approx. 90"; milling width approx. 15" – 19.7" (depending on cutter setup)
Spindle Motor Approx. 5.5 HP
Machine Weight Approx. 13,700 lb
Approx. Footprint 236" × 75" (allow extra space for loading large blocks)

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Built on Real Engine-Rebuilding Experience

Decades before today’s engine shops trusted our equipment, Tony was already deep in the craft — rebuilding motors, machining blocks, and pushing for better precision.

A local newspaper once featured him as a standout young machinist, noting his drive, attention to detail, and obsession with doing things the right way. That same passion would eventually shape our company’s values.

Today, that commitment lives on in every machine we sell, every customer we support, and every shop we help succeed.