How long do manifold bolts last before breaking?

[Firebird]

It seems that every other day, there is a thread on broken manifold bolts. On average, how long do they last before breaking? Is this something we can all expect to address at 50,000 , 60,000, 70,000 miles? Just trying to get an idea, as headers are looking better and better every day, once the truck is out of warranty.

 

[69GWC]

Dont think I will wait that long, thinking next year Shorties and might as well get a tune to go with it..lol

Oh and a Vararam intake
might have 12k to 15k on it then...

 

[Casper]

Hemi is mostly aluminum, but has steel exhaust manifolds. Dis-similar metals heat and cool differently. Bolts are the weakest link, but the process may lead to warping manifolds as well. I had my right manifold replaced under warranty at about 30K. You can't miss the symptoms, a tick when cold that slowly goes away as engine warms.

 

[CTD]

Dont think I will wait that long, thinking next year Shorties and might as well get a tune to go with it..lol

Oh and a Vararam intake
might have 12k to 15k on it then...

Hemifever tune, Vararam CAI, and 180 t stat was the first things I did to my truck a little over month ago . With these few things it really woke the truck up, you won't regret you decision.

It seems that every other day, there is a thread on broken manifold bolts. On average, how long do they last before breaking? Is this something we can all expect to address at 50,000 , 60,000, 70,000 miles? Just trying to get an idea, as headers are looking better and better every day, once the truck is out of warranty.

I've read quite a few trends on hear and it seems a lot of peoples start to fail between 40,000 and 60,000 miles. I just put ARH long tubes on about three days ago and my bolts already looked in pretty crappy shape with only 13,000 miles on my truck.

 

[BigRed4x4]

Had 2 bolts break around 80,***

 

[HammerHead]

Mine broke at 60k

 

[skirider]

Think mines broke at 40000.

As much as i would not. What damage of leaving if there gonna break again

 

[LB3711]

Had 2 bolts break around 80,***

same for me. the rear ones. Only had ticking on the passengers side though

 

[tmurphss]

I'm sure every truck will be different. I just had to replace one last weekend and I've got just shy of 105,000 on my '09.

 

[DILLIGAF]

mine broke at 60XXXkm, fixed under warrenty and the week after I ripped off all the factory crap for LT's

 

[Bluto]

Mine went around 60k