340 or 408?

Let me make it simple for you.

A guy says he wants to run his 4.56’s and build a 340 and all you short dick clowns come out of the woodwork and tell him how stupid he is and how great an under headed 400 inch tractor motor would be for him.

That’s THE issue.

Don’t talk to me about engine building until you can do a valve job and tell me why you did it.

Get there and we can have a conversation.
I didn’t tell him he shouldn't run his 4.56 or build a 340. It’s internet experts like you who tell everyone what they shouldn’t do. There are more than one way to skin a cat.

It’s like grade school math, show your work. I’ve posted several examples of mine. All you’ve done is thump your chest and name call.