Another surprise.

Yes it is a big investment. I have no peace of mind with these main cap bolts. For some reason I keep thinking they're imposters, they're not Mopar. If I did run them I would run them without the washers. The length is approximately the same.

The problem I ran into when this first became an issue is that I can find no other bolts that have the extended area on the end of the head to mount a windage tray or a oil pump pickup with the exception of a Ford bolt that torques to a different spec.

There is a ARP bolt for a 351 Cleveland that seems to be exactly the same size. But it torques to 100 foot pounds with ARP grease on the threads. That's a long way from 85 foot pounds with oil on the threads. ARP said to torque it to to the same spec as the stock bolts...

The only other thing I can find are studs. I can almost guarantee that pull my block out of alignment and then I'll have to line bore it. That's not possible at this point. So I'm still looking for factory bolts such as a original 340 main cap bolt or the high performance 360s from the 70s that had the windage tray. I've been looking for months now no luck so far. Not that I would trust it, but does anybody out there think that from the pictures those are actually Mopar performance bolts?