340 head, intake advice please

lemondana said
Take a picture of the whole back of the flywheel. These holes in this picture are not the cast crank 340 balance holes. There should be 3 drilled circles on the middle ring on this back. I guess is this whole assembly got balanced together, it should be OK.
Click to expand...
No, no, no.
You're thinking of the LA 360 flywheel, which is a whole different external balance than the 340. The 360:
1720235963782.png
And the cast crank 340:
1720234916900.png
(Above diagram is also handy if drilling a standard neutral balance flywheel for the cast crank 340)

From the Mopar chassis book:
1720235334557.png
340 cast crank:
1720236421762.png