Factory roller 305 small block chevy rebuild

In this video I do the first steps in rebuilding a sbc. I inspect the crankshaft, connecting rods, pistons, and the block. This engine is an 87 and up 1 piece rear main seal.

[@luckyPiston]

That bad main was furthest from the oil pump and from the factory new SBC oil pumps are only pushing 35-40 psi on a good day, where a SBC should really run closer to 60 psi for a long happy life . I think its an EPA thing and fleet economy and if you reduce the drag from the oil pump (and the v/v train too by going roller) you save x number of million gallons burned on the nation's hy-ways. Most important part of any SBC build is solid oil pressure from a good pump.

[@davidcraft4909]

yeah, it is common for a number 1 or 2 rod to go out, or I guess even the main since they are the furthest from oil pump. From my experience usually the mains don't go out its usually a rod, but how silly do I sound saying that when I have an engine with a bad main lol. no, but seriously, I have been saying for years the mains don't go out its always a rod journal. In my defense the first like 5 to 10 engines I have dealt with, its usually a rod bearing in the front of the engine 1 or 2. But yeah this is not the first main journal I've seen that was bad. they go out too i guess.

[@luckyPiston]

@@davidcraft4909 Ive seen motors where #1 or 2 main bearing shifts but doesn't spin , it's just enough to cover or restrict the oil hole in the block and then the rod thats fed from that main go's dry and spins , its like a main shift takes out a rod scenario.

[@Jimicruz34]

Great info. Thank you

[@ViewThis.]

Stop bashing the 305 people. Bash the heads if you must bash something, because there is the choke point.

[@davidcraft4909]

I wasn't trying to bash anyone. I'm not even trying to bash the 305, but it is what it is. the 305 has 2 major drawbacks the heads and the bore size. I'm actually kind of on a mission to see if a 305 can make any power with a turbo, but I am skeptical. Either way I really enjoy seeing people take underdog engines like straight 6 put a turbo on it and run like 9 sec. I would really like to see more people take a 305 and do something impressive with it. I just talk down on them because they have a major disadvantage and a 350 is actually cheaper to build when you get into forged pistons and head options. I really don't hate on any engine or brand, I like it all. I apologize if i said something in my videos that you didn't like.

[@w41duvernay]

GENERALLY, to make power in this thing you would have to invest your money in a cam and heads. AFR or Torquer World product heads 043650-1 would work here. The Gm OEM heads for a 305 aren't known to make power.

[@davidcraft4909]

I'm going to put a gt45 turbo on a stock 305 and go from there. I know the stock heads won't make that much power. The idea is. That if I can make about 250 hp with stock heads and 9:1 compression, and then put a turbo on it and boost 14 lbs, then I should have a 500hp engine and it should make about 500 ft lbs of torque. I'm not saying i know it will. I've never done it before, but that's roughly what I'm doing and the theories behind it, lol.

[@SOLDOZER]

The problem is the engine needs $1000+ of machine work. Could have bought a better engine. Its not really worth it. This is a DIY job engine.

[@luckyPiston]

I dont think so, it didnt look like a high miler, more like someone was'nt doing regular oil changes , have the crank done , refresh the heads, ball hone the cylinders , clean everything , could be a solid runner.