Jump to content
  • Sign up for FREE! Become a GM-Trucks.com Member Today!

    In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. 

Exhaust valve tip failure.

Recommended Posts

You did pretty well, most work trucks in Canada are resting in the junkyard with that kind of mileage. 6L's fail within 2,500 miles, or at 200,000+. You don't see many fail in between there. Looks like you caught it before it really messed up your day. Good luck on your rebuild, and a happy 193,000m more. 

Link to comment
Share on other sites

I think your spot on.  The 300K+ mile club is for non work related driving.  My mechanic, who knows how I use it, was shocked I got that many miles out of it.  Key is I drive rpm instead of speed limit.  Do my best staying just below 2000 rpms and only go higher pulling over mountains.  Where the 6.0 and 4:10 really shines is slow rolling hills.  Transmission drops a gear and up shifts at the perfect moment.


I've demonstrated how to tear a small block apart, now the measure is can I get it back together and run without issues.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

By using this site, you agree to our Terms of Use.