2009 silverado #5 connecting rod broke

2002z71black · June 8, 2020

I have a 2009 Silverado and #5 connecting rod snapped. Crank journals excellent ,and turns smoothly in mains. Can the crank be reused or is there a possibility it bent , and scrap it.

davester · June 8, 2020

No way to tell from the pic and what info you posted. A machine shop would be able to tell you for sure.

MaverickZ71 · June 8, 2020

Drag racing? Heavy haul or towing? Or just normal passenger vehicle use?

garagerog · June 8, 2020

Not sure if I'm viewing the picture correctly. If this is a V-6 are you sure it wasn't #3 connecting rod? It appears the connecting rod took out a good chunk of the block with it. The whole thing looks like toast to me.

newdude · June 8, 2020

Well, you definitely need a block. I'd find a trusted and reputable machine shop and have them check out the crank. It could be tweaked, but looking at it might not tell you everything about it.

29 minutes ago, garagerog said:

Not sure if I'm viewing the picture correctly. If this is a V-6 are you sure it wasn't #3 connecting rod? It appears the connecting rod took out a good chunk of the block with it. The whole thing looks like toast to me.

Looks to be a 4.8/5.3/6.0/6.2 so V8. Reluctor wheel for the crank signal is at the rear of the crank. Also, 6 bolt main caps. The 4.3 the crank sensor is in the front cover and reads off the front.

2002z71black · June 8, 2020

It is a 5.3L and i have a good 4.8. #'s match on both blocks. I Was thinking of just swapping crank , rods and pistons, to the 4.8 motor. Pick up 2 more connecting rods as #5 blew and bent #6 connecting rod. It would just be regular use, no racing or heavy hauling. But yes the block is busted as well as head. And cylinder #5 valves and piston was in oil pan. Was not sure if anyone had this happen to them before and crank was OK

ClipperSkipper · June 9, 2020

We have, curious as to what oil was in it at the time of failure? This is lowly unusual.

2002z71black · June 9, 2020

Thanks for reply It is rare , but it happened before The truck had 5w30 Valvoline 136,000 miles. I noticed you said you seen it before were the cranks still good? Reason is my local machine shop is about $150 to check it out for cracks and turn it. Or I can do $175 Ebay. It turns smoothly I have not removed mains. and connecting rod journals look good, no scars..