GM 6.2L LT1 L86 Cylinder Head Assembly SET – 12620549 – Rebuildable Cores

Here's a solid project for the LS/LT engine builder.

This is a set of used GM cylinder heads, part number 12620549, designed for the 6.2L LT1 and L86 Gen V engines.

They're being sold as rebuildable cores.

They've been machine cleaned and inspected for cracks and damage, so you're starting with a good foundation.

The heads are made of aluminum and will need to be resurfaced before installation, as noted.

They're a direct replacement style and include other numbers like 12685669 and superseded numbers 12678633.

If you're building a high-performance motor and want to start with a fresh set of castings, these are a great base.

Just plan on sending them to a machine shop for a valve job and resurfacing.

Grab these cores and start your build.