SBM 340 Rear Main Cap

This is the conversation I had this morning:

I'll follow up with Kent tomorrow.

I went to my shop, I asked if they could grab the end cap I had brought in. With it on the counter, I asked, which way is it "too short" and i displayed length, width and height with my hands.
His response was the distance from the outer edge to the lip of the crescent shaped channel was too short..... and of course, the other side was too long.
What he was explaining was the cap was not centered to the same axis as the block. He explained that every cap would be offcenter as they were matched to another block.

I don't think they're really comfortable with Mopar so I told them I would take the block elsewhere and just bring them GM in the future.

If I'm correct, isn't the correct way to fix this is to weld thecrank journal and rebore it?


Ok, that makes sense to me. You can’t just throw any old cap on it and expect it to fit.

Even the first four caps might not fit.

That’s why the Ritter cap is the best deal.

It’s already machined for the seal and all that. And the hole (or half hole) in the cap is undersized so you can machine it to fit.

Sounds to me like the guy knows what he’s talking about.