I inherited a 1995 Camaro from my grandfather. He rebuilt the engine at 180,XXX miles and it sat for 2 years and has only a few hours runtime since then. From what I can tell the exhaust is stock minus cats. I pretty sure it's cammed because of the beefy summit 1.5 RRs and TrickFlow valve springs. Can anyone recognize it as an off the shelf cam? Any info will be appreciated!

 

idk bout the cam but ur valve stem seals look like they need replacing lol

 

Well, it sounds like it has a terrible knock, so when the engine is out for the next rebuild maybe you can look at the cam.

 

I think the video exaggerates giving a knock, but it definately has some valvetrain noise, almost like a chirping. I was thinking a lifter was going out or maybe a RR hitting the stud .A rebuild is in definately in the near future but it needs to make its way to me before I can do anything...dremel attachments are plentiful here

 

Is that assumed from the smoke?

 

Honestly if I heard that on the street I would laugh.

How is that a fresh rebuild? Oil additive is not a rebuild.

 

As stated, sounds like there is a rod knock. All the smoke can be from bad seals, which could also be from bad valve guides as well as worn oil rings or a broken ringland or two... Regardless, the billowing smoke is a good sign something ain't right.

 

that definitely does not sound good. the knock is louder than the exhaust

 

If it was bad seals it would smoke real bad on initial startup, but not so much once it was running for a few seconds. It is smoking every time you step on the gas. That is usually piston rings. Sometimes video cameras can exaggerate noises and pick up treble way easier than bass which can lead to a tinny sound. You can hear some clatter going on for sure.

How is the oil pressure?

 

I personally would like to hear you rev it some more.

 

It can be either/or/both. Idling causes vacuum. Vacuum can pull oil into the cylinders from weak seals or oil rings or a broken ring land or all of the above, pooling oil, cylinder pressure via revving will then blow it all out. Since there seems to be a possible rod knock it may be one troubled cylinder.

 

Probably a hot cam and ring gap set way too wide.

 

I've put the Opti on the wrong groove and it sounded like that.

 

that actually sounds like a misfire but hard to tell

 

Rebuilt? Sounds and smokes like a Duramax.

 

Could 3 year old gas have something to do with the smoke?

 

You ran the engine with 3-year old gas in it?

 

Thats what he said... It really does sound like it has an internal issue