SBC block filling ?

[Dwight Southerland]

Originally Posted by Reed Granrt

But I feel if you do indeed pour a block, then by all means try to cure it after the pour for it to stabilize and shrink as much as possible before you machine it.

X2

Use some good telemetry and find out the difference in temp of a filled block (the metal part, not the water that is circulating) at the bottom of the stroke and at the top after some hard runs. That will tell you much more than all this theorizing. I do know that a BBC early 396 block has an entirely different temp pattern than a sleeved 454 service block.