Can someone who knows more than me look at these pics and confirm that this crack I have found on 4 stock rods are a bad thing. I suppose I need to change them all now, huh? Money is a real problem. Can I safely use stock gm truck rods for 450 hp?

other view

That doesn't look good.

I've got a set of stock rods laying around. I'll make you a deal on them.....collecting dust for me....someone might as well use them!!!

Thats junk, replace them all.

Man, Its amazing how that could have happened on a stock motor. I think the last guy who rebuilt this engine did something wrong to have had this happen. Mike. I could use them. . Email me at [email protected].

Good thing you caught that.

yea, I was getting ready to have new pistons hung on them and new bolts so hopefully the machine shop would have seen it. Never seen that before, 4 of the center rods have the identical crack. I just checked crank runout and its less than .001 so that wasnt the problem. All the bearings looked great ??

Could they have overtightened the rod bolts????

They were very tight but I didnt check the torque to remove. The way the crack is, I think they were damaged by the bearings trying to spin on a previous blowup. Who knows. The engine was in very good shape and aparently rebuilt very well. I cant believe someone didnt see these cracks.

I have a set of 7/16 bbchevy rods,nice shape,300.00 includes shipping tripps [email protected]