Geneno said 1970 340 build date 1-8-1970 .020 over. Believe its of a 1970 Swinger. Large valve heads $2000.00....make arrangements for shipping View attachment 1715613307 View attachment 1715613308 View attachment 1715613309 View attachment 1715613310 View attachment 1715613311 View attachment 1715613318 Click to expand...