400hp 301?

My question isn't on how to make power but at 400 or so horsepower what weak points are going to be an issue with a 301? The bottom end is my main concern but I'm sure other things should be taken into consideration.

Will the crank still be happy or is it time to get a custom crank made?

Just a side note after rods use a crank drive oil pump and weld the gear rot shaft it Will spin the drive gear on the oil pump shaft.

I knew the rods weren't that great wasn't sure about the crank. Will just the 7080 injector tips be enough or will they need to be reworked?

7080 injectors (.0148" holes) won't get you the desired 400 HP.  I'd guess at least 4 hole x .0200" or bigger.   What injection pump are you thinking ???

If I was you and 400hp is all your after rethink that to an A pump not as much grinding and cutting to make it fit.

Did the 2800 blocks have provisions for piston cooling jets or is that something that would have to be drilled

The maroon 7000 tractor engine in about 1977 had piston cooling, while the older ones didn't. Don't think I've ever seen a 2800/185/ F combine engine drilled for piston cooling, but there could have been. If they did do that, they just used upper main brgs that blocked it off unless the block became a turbocharged 2900 instead. Not hard to do. I've done 3 or 4 over the years. Hole size is important.

Edited by DrAllis - 21 Dec 2018 at 9:58pm

It's the German standard - goodentight ! 

What about the nozzle nut on the injector, I'd say it's a bit more particular to a specific torque than a crush washer.

Trying to revive an ancient post here but I'm finally getting around to executing on this. I've since re thought things and I'll shoot for 300hp, honestly I'll be happy with 250 but now I've got more questions. Currently have an A pump getting 10mm barrels and plungers put in it, engine has allis injectors, should I go with Bosch style? It's going in a pickup so I'd like decent drivability, at 300hp what turbo do you recommend? And until I can think of any other questions has anybody put a fluidampr on a 301?

Yeah, I was looking into an hy or hx35, probably gonna end up going with the hx. Now I've thought of more questions, with the Bosch injectors how is the availability/ interchangeability of the injector tips? Will sourcing larger tips be an issue? And finally until I think of something else how much boost can the head gasket take?

So will the 7080 tips not flow enough for 300 horse? I've read a few places about the 301 dropping valve seats, I don't plan on beating on it, is that something I should be concerned with?

Anybody got a part number for a crank driven oil pump gasket?

Something that's slipped my mind until now, will the OEM grade 8 fasteners (head, mains, rods) be happy at 300hp or is it time to upgrade?