Calliope Performance Engines

Calliope Performance Engines This page is going to be dedicated to the 427 Calliope engine and the rebirth of it!

Here is a pic of the intake valve drawing for calliope.
03/25/2026

Here is a pic of the intake valve drawing for calliope.

Intro into the first steps of machining the cylinder head for Calliope. I’m very fortunate to be surrounded by a ton of ...
03/22/2026

Intro into the first steps of machining the cylinder head for Calliope.

I’m very fortunate to be surrounded by a ton of smart people who are excited to be a part of this engine program.

This video gives information on the Calliope cylinder head project, where the fixture to hold the head has been completed and the ends of the head have been ...

03/20/2026

Chips are gonna be flying!

Jay has got the head in the machine.

We are getting closer to machining a cylinder head!
03/19/2026

We are getting closer to machining a cylinder head!

Jay is building fixture plates to machine the heads. Hopefully not long and the machining process can start.
03/13/2026

Jay is building fixture plates to machine the heads. Hopefully not long and the machining process can start.

Here’s the water jacket cores for the block. We poured them in an expoxy so that we could 3d scan them to put in cad and...
02/21/2026

Here’s the water jacket cores for the block. We poured them in an expoxy so that we could 3d scan them to put in cad and to make Greg’s life easier doing to block cad. 😁

A little Sunday morning photo dump of the start of the head tooling being scanned and modeled, so that Greg can assemble...
02/01/2026

A little Sunday morning photo dump of the start of the head tooling being scanned and modeled, so that Greg can assemble it all in cad to get all the exterior features of the head out of it.

01/29/2026

Short video Greg did with pistons in block.

Based off the piston design. They did everything possible to achieve max compression ratio with the stroke it has. Thank...
01/29/2026

Based off the piston design. They did everything possible to achieve max compression ratio with the stroke it has.

Thanks Greg! Another piece done.

Short block wise we have. Oil drain back tubes, cam shafts and timing gears left and we can move on to the upper end stuff!

Getting the head core boxes modeled. This way If something ever happens to them I have them in cad. This is one of the e...
01/27/2026

Getting the head core boxes modeled. This way If something ever happens to them I have them in cad. This is one of the ends and he’s doing the intake port also. Then the rest

Full scale block, timing cover and oil pan together..
01/26/2026

Full scale block, timing cover and oil pan together..

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Minnesota Lake, MN
56068

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+15073173252

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