I have almost 152,000 miles on my car and was wondering...
How much longer can I go before I should change it?
Is there anyone that has more miles on theirs???

Thanks,
Michael

 

Mine broke at 100,130 miles.

 

83k

 

163000 miles here and no intention of replacign it until it goes....

 

If you are doing a heads and cam and not replacing the old stock chain then you won't have to wait long. Also if you do a cam and don't replace the chain then you get what you deserve when those ported heads are ruined.

 

400mi.

 

Please spare me the lecture...I do things for reasons. When the chain goes it will give me a reason to tear it back apart. I don't look at it as a chore. I actually enjoy taking it apart.

And how exactly is a busted timing chain going to ruin my heads?

 

Chain breaks cam stays the same so therefore the valves stay the same and the pistons get to meet the valves.

 

yes, that is absolutely right. I actually have not done the cam yet. I am still waiting on it to come in. In all honesty it would be best for me to do it then. And I probably will. But I look forward to any and all reasons to tear it apart. Because when I do it seems to get major upgrades.

 

I don't believe the LT1 is an interference style engine though. Which means no matter what happens to the timing chain, the valves could never touch the pistons.

 

Breaking them isn't all that common from what I've seen here, but those things are damn near rubber bands. Stretchy little bastages. I'd consider something other than a stock replacement if you can when the time comes to do it.

 

If your gonna get a new one get the extreme duty set. You can get it fo like 190. But in your case with that much miles you might as well just wait till it goes and replace it when you rebuild.

 

scoobysnax83
Are you replacing the opti? If you are you might want to think about a 95 opti conversion and go with a double roller timing chain and el. wp. the 95 conversion is cheaper than the 94 opti and the money you save on a timing chain you can buy a el. wp.


This is JMO.

And on a side note a streched timing chain will give you timing problems. Might not fell it in the (sotp) but it can hurt power.

Sean

 

yea, point noted. But the only problem is I already bought and replaced the opti about 1,000 miles ago....

 

It can happen, I have seen it happen on an LT1. Smallblock chevys are not known for this but it does happen on occasion. I had to help a buddy pull a head off of his Z28 after his chain went. Bent an Intake valve on the number 4 cylinder. It did hit the piston and left a mark. I told him it might create a Hot spot on the piston but he ran with it after fixing the head and its still running today.