BIG BLOCK RECTANGULAR (Akron Canton)

Casting 188 completely gone through.
These heads are only milled 0.
10 and had never been abused.
The valves are stainless steel with titanium keepers and locks.
Springs can be full roller but set up on flat tappet style spring, springs in either case are new.
Guides are tight no wear.
These heads were 1970 LS6 454 factory.
$2000 have $3000 in them.