Mopar R1 block

12swinger said
I wonder if I should install 4 bolt mains on this x block?
I’ve heard the 2 bolt caps are quite a bit stronger. I believe yellow rose mentioned that. Probably for piece of mind I should.

Don’t bother, the 2 blot caps are fine. I made over an honest 700 horse with an X block and W5 heads with zero issues.
4 bolt caps are way overrated.