What is the performance difference between boring and stroking an engine?

What is the performance difference between boring and stroking an engine?

Boring adds a few more cubic inches and a small increase in torque. Stroking adds a lot more cubic inches and a lot more torque.

Back in the late 50's/early 60's, you could safely bore a 283" Chevrolet .125" over and gain 18 cubic inches. But as all engines now use thin wall casting, they can only be bored .060" over. So if you want to increase cubic inches, the only practical way to go is stroking it.

Boring adds a few more cubic inches and a small increase in torque. Stroking adds a lot more cubic inches and a lot more torque.

Back in the late 50's/early 60's, you could safely bore a 283" Chevrolet .125" over and gain 18 cubic inches. But as all engines now use thin wall casting, they can only be bored .060" over. So if you want to increase cubic inches, the only practical way to go is stroking it.
Ummm. With an LS1/LS6 you don't want to go more than about .005 to .010" overbore...

As easily as I can explain it, bore refers to the diameter of the cylinder bore in the block. Stroke is the distance of the center line of the crankshaft rod throw in relation to the crank main bearing centerline. Increasing bore or stroke increases displacement. More clearance issues are encountered when the stroke is increased. An example of stroke is running the 3.75 crank in a 350 block to obtain 383 cubic inches. Stock 350 stroke is 3.48. Those numbers refer to distance of the rod centerline to main centerline.