Here's a good one a 68 383 vs 72 400. both are viable candidates for a hone and re-ring.
Sometimes cubic inches don't mean diddly. lol
now back to the 318 vs 340.
I personally love the 400. Huge bore, ready for a lot of extra cubes should one decide to change the crank, and still a Low Deck motor for better fitment. Again, I love the 383 too....
