Engine damage / 440 RB

I was going to say - I've had issues with 8 before because the vacuum nipple for the power brakes is there and it can go lean if the booster's leaking a little. You can also look at the backs of the rod bearings and the mating surfaces of the main caps. If you can post clear pictures of those we can tell you how bad it was detonating. That's more than likely what killed it.