[D-CEL]

That flywheel had no business on that motor.
But that’s not what this is about,
This is about cutting the lower bolt holes of a scatter shield off. And while you don’t want to talk about the consequences, we should advise about them.
The fact of this failure is that the flywheel let go @ 5000rpm, significantly less than the SFI standard requires, and well under what many owners spin on the street, “just playing around”
It destroyed the housing and the block. It went across the room, thru a wall and damaged a cabinet.
As I said in the 460ford.com thread, I can’t imagine if that had been in a Cobra.
Yes we all “should” all use SFI certified flywheels.
and
Yes flywheel failures are rare.
But some don’t and “stuff” happens, that’s why we buy scatter shields in the first place.
Just something to think of before you cut 30% of the containment strength away.

By the way, if you read the post, and follow the build you will see is not a “very stressed racing engine”, it’s a very healthy street motor on pump gas. 557 CI, Boss headed, 10.4 to 1, solid roller, single carb.

I know, boring, nothing to look at here....

…..Jason