Hemi 392 Block & Heads

A dimensionally correct 392 / 6.4 Hemi you can print and hold. Gen III Hemi swaps eat space — the heads are wide, the exhaust ports point where your frame rail is, and you find that out the expensive way. Find it out on the bench instead.

The steel mock-up blocks that do this job sell for $309 and nobody makes one for the Hemi at all. This is the file.

What you download

• STEP — native solid, so you can bolt your own parts to it in Fusion, SolidWorks or Onshape
• Correct deck, bore spacing, bellhousing pattern, motor mount and accessory locations
• Instant download at checkout. Nothing ships.

What people use it for

Header and manifold design without the engine present · Hemi swap fitment before you commit · frame rail and steering clearance · CAD reference for a part you're drawing.

Licence — Shop Use

Use it in your own shop, including on paying customer jobs and in design work you're paid for. You may not share or resell the file itself. Print-and-sell licences available — ask.

Drawn by James Goertz, G1Pro. This is the file behind the 6.4 Hemi manifolds I've built, including a black-coated one for a 1967 GTX.