i was just wondering what some of your opinions were on when is it too many miles for a cam install.

assuming on the cam install, you replaced the lifters/pushrods/spings/retainers/caps/rocker arms.

and even pull the heads and had them p&p'ished.

what kinda miles would you say, it's more logical to go ahead and re-ring, and new bearings.?

also, the car in question was owned by an older guy and left it completely bone stock and in immacculate condition. just a lot of highway miles. so it hasn't seem much abuse. it has 108,000 miles on it....

 

at 142k miles, mine blew up 200 miles after the cam went in.


...


which of course stemmed from dropping the oil pickup from the higher rpms/shift firmness/power the new cam/pcm combo was making. Losing oil pressure, and spinning a bearing.


Go for the cam. Just cover your bases and you'll be fine

 

105,000 and I got about 2000 on my cam before the motor let go, Biggest problem is over-revving the motor after a cam install, If you do a hot-cam and still shift before 6k, id think youd be fine. Ive heard of guys doing cams on 150,000 motors and never having problems, It all depends on ur apllication and how well the motor has been taken care of

 

I have my old 125000 mile motor, I took it out to put in a 35000 mile motor while I did my swap... and now I may have to replace the bearings in it.

 

ahhhhhhhh you're all saying negative things.
where's all the success stories!??

 

140000 miles when i did the swap, i am at 152000 now, no problems.

I also added long tubes, heads, and a bigger stall at the same time.

 

yay!...
what do you rev your motor to?
i wouldn't feel comfortable revving mine over 5900 on the stock bottom end.

 

I did my cam at 90k miles and I am at 100k now and everything is cool.I race my car every weekend at the local tracks points series and the car is still as consistant as hell.

 

hey rock,

according to your sig, you only gained around 1 tenth when you got a cam? am i reading that wrong, or is it due to your stock tuning?

 

6100 rpm

 

Well, I haven't put in my cam yet but when I took the old one out I noticed that the front cam bearing was really worn so I decided to check the main and rod bearings as well just to be sure, getting new ones now. I didn't want to put in pp heads 'n cam on worn bearings...but I've read up on here and it seems that alot of people don't care and some turns out ok...some not. I personally think you should check conditions of things instead of going for a decision based on "miles"...

 

Good idea. That's the only way to know. The condition of the bearings is what is going to be the deciding factor on how long it will last (assuming no oil usage because of rings, now).

It is a lot more work to mess with the bearings, but you will be doing them and maybe more later, if you don't check them out.