Building a street / strip 451. I have a set of Fed-Mogul #4094M main bearings that came with the 400 block I bought. They are listed as a stock replacement bearings (As opposed to "performance" bearings. They are full grooved, What do you guys think about using these, as opposed to a set of cleavite's ?

These: http://store.summitracing.com/partdetail.asp?part=FEM%2D4094M&autoview=sku

(My enitial feeling is that if the motor is assembled correctly and solidly built, Any good full groove bearing should be just fine.)

Be careful with a full groove bearing. you might need to upgrade to a HV oil pump to maintain oil pressure. other than that, as long as they are quality made, I think they should be fine.

Check out 440sources website, they ahve a long page listing different bearings, what they're made of, what they're good for, why they're good for their designed use, and bad for other applications, etc.

like a race bearing being super soft and allowing dirt to embed itself into that bearing so it doesn't ruin the crank, but because it's super soft, they are only good for a season of racing before they're worn out.

I have yet to buy my Main Bearing, everyone seems to be out of stock when I go to buy periodically...I was told to buy Clevite H series for the 440...CLE-MS-1277HG.

I too have a Melling HV and will have about 45-65lbs with a Moroso Deep Sump. So volume and pressure wont be an issue

Whatever bearings you end up with, be aware there are early and late model bearings. The thrust bearing flange is larger on late model bearings.

those are tri-metal bearings, equilivant to the '876p bearing. don't worry about them, they'll be fine.