Camshafts..

[GASoline71]

You need to read the instructions that came with the timing set for a 3 keyed crank gear. It will tell you where to set it up for TDC.

Are you talkin' 30 degrees initial??? holy cats!

You can pull the lifters out carefully with a pair of pliers.

Gary

[oldblue1968chevy]

Machine shop did the bottom end (assy) im not sure if I have the papers..I called comp and squared it away.

yeah 30 deg initial!

Ok the comp was real hard comming out (never done before either).

I got a little rough with it 2 times (turning via cam sprocket) There was some metal shavings (not sure from where) like metal hairs actually not very many but more than I wanted to see?

I got some pics but they dont show much. Whats excessive and now im worried.

Thanks guys its torn down but I have to go out with the MS.

Now im worried

Gary-I just tunred the cam and picked the lifters up as they came up.

Thanks guys leave me something good

[GASoline71]

You got 'em out. That's all that matters. Do any of the bottoms of the lifters look concave and "eaten up"?

Gary

[oldblue1968chevy]

Lobes on the cam look fine.

I glanced at the lifter bottoms as I was taking them out. Nothing JUMPED out at me

Only thing im worried about now is the metal hairs that came out toward the rear of the cam..

[GASoline71]

I'm gonna bet you scraped some of the coating or babbit off of the cam bearings with the distributor drive gear or a lobe as you pulled the cam out.

You will need to check those cam bearings. Which is pretty tuff with the engine in the truck. If they're gouged, they'll collect crap from the oil and eventually lead to failure.

Gary

[oldblue1968chevy]

What am I looking for on the bearing?

How hard would it be to put new ones in (how the heck do you get to em anyways?!

And Shoot thats NOT what I wanted to hear LOL

[GASoline71]

As far as I know... It's impossible to put cam bearing in an engine with the engine still in the vehicle. There are special tools rtequired to drive them in and out.

Keep your fingers crossed... Maybe you can look through the litfer holes to the berarings and see if there are any gouges.

Gary

[prostreetC-10]

Originally Posted by oldblue1968chevy

Lobes on the cam look fine.

I glanced at the lifter bottoms as I was taking them out. Nothing JUMPED out at me

Only thing im worried about now is the metal hairs that came out toward the rear of the cam..

What the heck is a metal hair? Is that another word for a shaving? Sometimes what will happen is if the cam was not centered on the bearing, it can wear into the bearing and create a little groove. This usually happens on the back side of the bearing. I have seen where guys will drive the rear soft plug on the back of the block in too far to where the cam can't slide all the way back. It cuts a little groove in the bearing. Then, when you remove the cam, it takes that little edge off. This and what gary said is not good. Great care has to be taking in removing a cam. Those lifters rotating literally sharpen the edges of the cam lobes so they are pretty sharp. It's easy to knick or gouge the bearing if you are trying to force the cam out. These are just a couple of shots in the dark.

I predict this thread will hit 200 posts easy!


Hey Gary.....went to that swap meet in Puyallup and got some great deals. Bought an LS6 carb from some old man for $150 and sold it for $449 in about 5 hours on eBay. Sold it just as a core too. Unfortunately, I was also reminded about how bad Washington drivers are! lol

[oldblue1968chevy]

Ok I'll check it out later tonite and see if I can take a pic.

Im crossing fingers and REALLY hoping alls ok

So where are the metal shavings/hairs comming from if everything was OK?

The bearing lobes on the cam looked good so did the lobes on the cam..

[prostreetC-10]

Question is where did you find them? You are asking us but you are the one that found them.

[oldblue1968chevy]

I started to notice them on the back 1/2 of the cam. I got it about 6-8" out of the block and it started to get hard to get out I spun it picked up down/sidexside and it slowly came out I hadd to do a lot of spinning etc to get it all the way out.

The back 1/2 of the cam is when I started to notice it. The very back of the cam (between dizzy gear and lobe) is where the most was.

[crazy longhorn]

Originally Posted by prostreetC-10

Question is where did you find them? You are asking us but you are the one that found them.

Yup Are they on the lobes or the journals? My guess is the same as the rest....it sounds like you nicked a cam bearing on the way out? Check it out, if its not too bad, I would put it together & run....still waiting for the sound clip crazyL

[oldblue1968chevy]

Haha.

I have about...20 days to finish it before I leave for basic dad said im crazy tackling a project like this with such little time lol "It'll only take a afternoon......."

[crazy longhorn]

Originally Posted by oldblue1968chevy

Haha.

I have about...20 days to finish it before I leave for basic dad said im crazy tackling a project like this with such little time lol "It'll only take a afternoon......."

An afternoon.....thats time for an engine swap + the cam swap Well, maybe in my younger days Take your time, check her good....but DO post the sound clip! best of fun,crazyL

[oldblue1968chevy]

The only bearing I can really see is the front one. The rest I cant really see at all even thu peeking thu lifter holes etc etc etc

The front one doesnt look bad or anything at all. Nothing out of the ordinary etc

I looked at 1 lifter nothing abnormal. Looked over the cam nothing abnoral on it either. Just some misc metal shavings (quite a few) from What I guess would be the rear of the bearings.

I guess I'll clean what I can get to and just keep going???

Do you think I'll ruin the engine if I put it all back together with the new cam etc? I dont wanna stick $300 worth of parts and then it crap out on me lol.

Uh this sucks lol

I dont think I'll mess with new bearings Id just put it back together with old parts/gaskets and park it for the next X amount of years and wait till I can do it right.

Whatchall think, maybe I shouldnt have jumped in lol

[crazy longhorn]

Originally Posted by oldblue1968chevy

The only bearing I can really see is the front one. The rest I cant really see at all even thu peeking thu lifter holes etc etc etc

The front one doesnt look bad or anything at all. Nothing out of the ordinary etc

I looked at 1 lifter nothing abnormal. Looked over the cam nothing abnoral on it either. Just some misc metal shavings (quite a few) from What I guess would be the rear of the bearings.

I guess I'll clean what I can get to and just keep going???

Do you think I'll ruin the engine if I put it all back together with the new cam etc? I dont wanna stick $300 worth of parts and then it crap out on me lol.

Uh this sucks lol

I dont think I'll mess with new bearings Id just put it back together with old parts/gaskets and park it for the next X amount of years and wait till I can do it right.

Whatchall think, maybe I shouldnt have jumped in lol

Can you post up some pics, of what is going on?

[oldblue1968chevy]

Yeah sorry

Cell phone pic I'll go take some digital pics in a min.

[oldblue1968chevy]

Labeled LOL

[litew8]

.
http://67-72chevytrucks.com/vboard/s...d.php?t=508954
.

[oldblue1968chevy]

Good idea I'll see if we have one around tomororw Im done messing with it tonite I cant work on stuff without getting dirty anyway

[oldblue1968chevy]

Thanks for the link good read

[oldblue1968chevy]

Better pic of bearing

[prostreetC-10]

Exactly what I posted. Your cam was too far forward and it wore a lip into the bearing. As soon as you pulled it, the other journals took the lip off. Problem is that if it's like that on the front one from being too far forward, then more than likely they are all like that. Take those metal shavings and times that by 5 bearings. That's a lot of big metal chunks dropping down into the pan, on the crank and rods.....etc.

BTW....it's hard to tell from the pic angle but that bearing looks kinda thin at the bottom and that's where they will wear because of the pull of the chain downward.

[oldblue1968chevy]

Are you sure prostreet?

Not real sure what your saying lol..

Sorry for dumb questions but how'd it get too far forwards?


So whats the BEST/RIGHT way to fix it?

Edit-Its only got like 6000 miles or so on it?!!?

[crazy longhorn]

Originally Posted by prostreetC-10

Exactly what I posted. Your cam was too far forward and it wore a lip into the bearing. As soon as you pulled it, the other journals took the lip off. Problem is that if it's like that on the front one from being too far forward, then more than likely they are all like that. Take those metal shavings and times that by 5 bearings. That's a lot of big metal chunks dropping down into the pan, on the crank and rods.....etc.

BTW....it's hard to tell from the pic angle but that bearing looks kinda thin at the bottom and that's where they will wear because of the pull of the chain downward.

That bearing does look a little thin....what did she run for oil pressure (hot ,idle)?