Roller rocker, roller lifter, cam gear thrust plate (if needle bearing type).

Jody

 

If you have a roller cam, I wouldn't even start the car until you found out where that bearing came from. I guess no matter where it came from running the engine wouldn't be a good idea.

 

Don't run engine anymore. You gotta find out where it came from. A buddy blew up his race-prepped (expensive!) 502 because needle bearings fell out. If you've had one fall out already, then that means a bunch more will probably fall out soon, as something is failing. Maybe they already fell out and are lodged in oil galley just waiting to blow up your engine.

As stated above, could be rocker, lifter or cam thrust plate, wherever you've got needle bearings.

-

 

If it's a four speed and you don't have a brass pilot bearing it could be froma roller bearing pilot bearing in the end og the crank? If it's an auto trans did it have a four speed? Did the engine get rebuilt and still have roller bearing pilot bearing in the crank? It's not something that would have to be removed to run a flex plate and auto trans. If it's just sitting there it's probebly coming apart.

Joe

 

One way to help tell where it came from is by it's size. How long is it? are both ends smooth or is it broken off (jagged on the end)? The thrust plate bearings are short. Roller rockers will depend on the style and make as will the lifter bearings. Did you hear any funny noises? (chirping, etc...). When I had a roller lifter fail, it would make a chirping noise every once in a while, very hard to find or describe. Needle bearing will do a number on your engine, it did on mine.

 

Allen,
Where exactly did you find the roller ? Which engine do you have ?

 

Allen,
Where exactly did you find the roller ? Which engine do you have ?

Found it in the oil pan and have a LT1 engine.

Allan

 

Allen,
About the only thing I can think of with a roller bearing in a LT1 would be a lifter. I would say its time to pull the intake and take a look at the lifters first.

 

Seems like on some of the later LS1 or LT1 F-body engines, GM had a recall notice on the roller rockers or lifters.

 

Maybe it has a roller bearing block protector behind the timing chain gear?

 

Dave,
The "recall" was on the LS1's. The LT1's dont come with roller rockers from the factory. Only other thing I dont know about is if the distributor up in front has any type of roller bearings in it.

 

I believe JC Dubs has it, Isn't there a flat Torrington type bearing and race behind the cam to keep wear off block? Other than that,, early and LT1 do not have that type of beaing inside of motor, unless you have needle roller rockers? .

 

I work for Timken and I work on the product line that makes the roller lifters. If you can give me the dimensions I can tell you if it came from there. I doubt it came from the roller lifters because we have never had any failures reported. Believe me they complain about every little thing!

 

Ya'll may laugh, but when i rebuilt the engine in my truck (didn't like 7,000, i know... i know..) I pulled the engine, pulled the carb, then manifold, and lone behold, i found a set of vice grips, and the old carb bracket. The bolt to the vice grips was in the oil pan, and a hose clamp was inside the fuel pump. Now i have no idea how all that stuff got there... other than carelessness by the person who rebuilt it before me (maybe that is why all eight connecting rod bearings turned?). Anyways, i guess this is off topic, but figured maybe somebody would get a good laugh.
Shane

 

Ya'll may laugh, but when i rebuilt the engine in my truck (didn't like 7,000, i know... i know..) I pulled the engine, pulled the carb, then manifold, and lone behold, i found a set of vice grips, and the old carb bracket. The bolt to the vice grips was in the oil pan, and a hose clamp was inside the fuel pump. Now i have no idea how all that stuff got there... other than carelessness by the person who rebuilt it before me (maybe that is why all eight connecting rod bearings turned?). Anyways, i guess this is off topic, but figured maybe somebody would get a good laugh.
Shane

Lol, at least you got a set of vise grips out of it.

 

I understood the vice grips in the pan,, but hose clamp in the fuel pump? You mean cavity , right?

 

Oh my ... I don't even know why vise grips were around. What in the world would you use those for during a build ? Please tell me no one uses these to torque the mains. At least you saved the motor before something bad happened.

 

I understood the vice grips in the pan,, but hose clamp in the fuel pump? You mean cavity , right?

I believe you are right, excuse my lack of knowledge on terminology, but it was in the cavity under the lever that is pushed by the rod that is pushed by the cam. The vise grips were under the intake, but the bolt to them was in the pan. From my fit of rage i was still able to salvage the block, heads, intake, and oil pan. The crank had a hair line crack, the rods were tore up from the bearing turning, and i replaced the pistons and cam and oil pump upon rebuild. Live and learn.