(313) 555-0138
Detroit IRON AMERICAN MUSCLE & CLASSIC · DETROIT
Engine Building & Rebuilds
Engine & Performance

Engine Building & Rebuilds

Where horsepower is born — and made to last.

The engine is the heart of any muscle car, and a heart rebuilt carelessly will break it. Our engine room is where tired, knocking and smoking motors are torn down, measured, machined and reborn — assembled with the patience and cleanliness a performance engine demands.

From a faithful numbers-matching rebuild that preserves originality to a stroked, ported small-block making serious power, every engine we build is blueprinted, balanced and dyno-verified before it goes back in the car.

Built to a measurement, not a feeling

Every block is cleaned, crack-tested and machined to spec. Clearances are measured, not guessed. Rotating assemblies are balanced, and every gasket surface is checked for true before assembly begins in a clean environment.

We keep the original castings wherever it matters for value, and we are equally at home building a fresh aftermarket block when you want big, reliable power.

  • Numbers-matching restoration rebuilds
  • Performance street and strip builds
  • Boring, honing, decking and align-honing
  • Crank grinding, balancing and blueprinting
  • Cylinder head porting and valve jobs
  • Camshaft, induction and ignition matching

Proven, not promised

A fresh engine should never go straight into a customer car untested. We break in and verify our builds, and where a dyno run is warranted we provide a printout showing exactly what your engine makes and how it behaves across the rev range.

How We Work

01

Teardown & inspect

Full disassembly, cleaning, crack-testing and measurement of every component.

02

Machine

Precision machining of block, crank and heads to blueprint spec.

03

Assemble

Clean-room assembly with measured clearances and quality components.

04

Run & verify

Break-in, leak-down and dyno verification before fitment.

Common Questions

Can you rebuild my original numbers-matching engine?

Yes, and for a valuable car we strongly recommend it. We preserve original castings and stampings while restoring full mechanical health.

How much power can you safely make?

That depends on the platform and how you drive. We build to a target you can actually use reliably, rather than a headline figure that lives on borrowed time.

Do you offer a break-in service?

Every engine is broken in and checked before it leaves. We also provide clear break-in guidance for the first miles in your car.

Ready to get started?