Need 12v rebuild instructions

[FrankenTruck]

I am rebuilding a 12v out of a 96(I think). I know I am eventually wanting to be in the 400-500hp range, but my concern right now is what are the important things to do while the motor is in the machine shop and apart? I am pretty mechanically inclined but I don't really know much about the machining side of things. If I don't tell my machinists anything he will just hone everything and get it all as close to stock as possible. So if there is anything specifically any of ya'll know that I can tell him to help me make some more power I'd appreciate it.

 

[Dusterb318]

For that power range a stock spec bottom end will be fine and give you durability as well. A Cummins HG, new head bolts torqued to 130ft-lbs or studs if you prefer and you'll be fine. If you want to splurge on o-rings you could but for that level they aren't needed.

 

[FrankenTruck]

Should I do anything to the p-pump while its off? or is stock ok with it too?

 

[Chevycummins]

for that power level you can just do the afc mods, fuel plate, and a 3 or 4gsk. with a 62mm turbo, 5x12 injectors, 4gsk, and the afc mods i was in the mid 400's with my 190hp 12v

 

[displacedtexan]

While the pump is off I'd have it balanced, Thompson can do everything you need...

 

[FrankenTruck]

Is that someplace local? I'm having John at auto parts of Sapulpa do my machine work and assembly, but he is slow and kinda pricey but he is really thorough.

 

[displacedtexan]

Yeah, east Tulsa... They did a pump for me, and have done several for friends.

I wouldn't ask them for a max effort pump, but if the engine is apart I'd have it balanced for the few hundred they charge.