Well Im new and made an account just to ask this because I want some more opinions. My 01 Jimmy had a rod break and I don't really know how. I was driving the car hard sure and I know anything can happen. But what would cause the 4.3l to die like that? From what I always hear they are bulletproof but it seems mine wasn't and I kinda want to figure out why I don't really know where to start so I guess ask away. Sorry if its off topic

 

How hard is hard?

What kind of maintenance history did the engine have?

How many miles did it have?

I'm guessing you mean a con rod broke?

With enough effort, you can blow up any engine

 

How hard is hard?
80mph for 10 minutes
What kind of maintenance history did the engine have?
I repaired every little thing that went wrong and then some preventative maintenance
How many miles did it have?
179k
I'm guessing you mean a con rod broke?
Ye

 

I dunno man. 80 mph is what, maybe 3k? Not very hard if you ask me.

Have you had the truck since new? Maybe the previous owner didn't keep up with oil changes, maybe they were a fan hitting the red line.

Or, maybe you just got a Friday truck lol.

The 4.3 is pretty damn stout. Partially cause it's a tried and true design (a 350 SBC missing two cylinders) and partially cause it doesn't make enough power to hurt itself!

So, you rebuilding the stock engine, or sliding a V8 in there?

 

I dunno man. 80 mph is what, maybe 3k? Not very hard if you ask me.
There was a fair bit of revving up and down but it still wasn't that bad. It was nothing worse than normal
Have you had the truck since new? Maybe the previous owner didn't keep up with oil changes, maybe they were a fan hitting the red line.
My parent bought it 10 years ago and have only put on 50k miles so its been taken care of
The 4.3 is pretty damn stout. Partially cause it's a tried and true design (a 350 SBC missing two cylinders) and partially cause it doesn't make enough power to hurt itself!
Yeah thats what seems so odd about it breaking like this. Lol I could still drive it though it hit 45mph limping it to the shop.
So, you rebuilding the stock engine, or sliding a V8 in there?
Im just dropping another 4.3l in it I kinda like its power oddly enough. Its a surprisingly good racer.

 

And question has been answered as to why a rod went ....

 

Yeah, exactly how much revving were you doing? What RPM did you hit, and how long/often were you there?

And the 4.3 isn't really a racy engine. Not really built for high RPM...

You might need to look into a forged rotating assembly if you wanna keep racing it!

 

LOL odat, you cut right to the heart of the matter!

 

Yeah, exactly how much revving were you doing? What RPM did you hit, and how long/often were you there?
I would only ever really get up to 4k rpm. On take off I tend to let the other guy lead. It tends to be a lot of corners so I usually didn't stay high for too long. First gear would be the only thing I go through fast. Second, third, and fourth had decent acceleration at their torque curve peak.

 

I'm just curious on what this race truck looks like