360/380HP magnum crate motor value
To get back to the what it’s worth question…
New ATK crate 4,699.00.
ATK Engines HP73M: High-Performance Crate Engine - JEGS High Performance
I know that 320 HP. But cam and spring swap from to close to your 380 but tailored to buyers needs/choice.
To get the discussion going… I think I’d value your used and then put away 380HP crate at $2000 +/- $500
I know +/- $500 is a big swing. But it depends on what facts you can show. Like: endoscope pictures of:
each bore cylinder walls w/piston on bottom stroke
Cam lobe area
Exhaust ports
Hopefully you get some other opinions too.