Can we assume then, that your engine was not completely overhauled? Is the rough idle at a really slow speed? If the Generator light flickers, it needs a decent idle speed to kick in at all.

Paul

It turns out the Rockers were from 1958 and were so clogged I was not getting oil. I replaced the rockers and everything is great now..... Now the next problem I have is a rough Idle and the gen light coming on.

Maybelle lee

There have been problems with the cup size on push rods. Some push rods sold as Y-Block are not. The cups are a little smaller and the ball on the rocker arm does not fit down in the cup far enough. As a result the ball rides high on the upper edges of the cup and the cups can break out. Usually the sides break. If thats how yours are broken then you need to check your push rods for fit. The ball should set well down into the cup. You still need to check the installation of the rocker shaft for oil flow. Hope this helps. Chuck in

Y's guys rule!
Looking for McCullouch VS57 brackets and parts. Also looking for 28 Chrysler series 72 parts. And early Hemi parts.

MoonShadow, 292 w/McCulloch, 28 Chrysler Roadster, 354 Hemi)
Manchester, New Hampshire

The pushrods are originals apparently.Close inspection of the cups would likely show small cracks developing.Lack of oil will make it harder for the rockers to turn on the shaft once they get heated up as Ted mentions.A combination of deteriorated cups and lack of oil would explain why they are breaking.You should also disassemble the rocker shaft assembly and see how badly the shaft is scored from lack of oil.Quality aftermarket pushrods are a little thicker and stronger and have better cup ends than the originals.

  

Yes ted, you,re exactly right, some of the aftermarket p/rods have small cups and then they split and fail, its happened to me on one  application.

  AussieBill            YYYY    Forever Y Block     YYYY

 Down Under, Australia

The lack of oil can create a situation where the pushrods can fail simply from the heat that’s being generated.  Some brands of replacement pushrods also have down sized sockets or cups at their tops which keeps the ball on the adjuster from firmly seating within the pushrod.  This causes the adjuster to rest on the outer edge of the pushrod cup and break it out.

Lorena, Texas (South of Waco)

As far as the push rods breaking... They are breaking at the mushroom tip. And they are original. So as soon as I get a day off Im gonna remove the rocker assembly and see if it was installed correctly...then I will go from there. Stay tuned and thanks again for all your help.

Maybelle lee

I saw this happen on a F-100 272 engine. The guy asked me to adjust the valves, and one side was dry.

The problem was the passage in the head, that was clogged. If it's the "passenger" side of the engine that's running dry, you may have a problem at the timming chain also, because there is little to no oil going there. If it's the "driver" side, your cam/distributor gear can be starving oil.

Never a good thing tough.

The broken pushrods are very strange, never saw that happen. I saw bent pushruds, but never broken.

Túlio Lazzaroni "FORD", Florianópolis SC Brasil.

'74 Ford Galaxie 500 292 V8

'82 Ford Galaxie Landau 302 V8

'98 Chevrolet S10 4.3 V6

'01 Ford Focus 1.8 Zetec

[quote][b]LON (5/31/2011) If no oil appears from oil hole you may have a spun cam bearing....



Or (not unheard of), the guy just forgot to clean out the plugged oil passage in that head. Sometimes the sludge is so bad in poorly maintained motors they have to be drilled out.

6 VOLTS/POS. GRD. NW INDIANA

1st step probably will to be remove the rocker assembly on the bad side & check to see if the shaft is installed incorrectly. Unfortunately, if they have been running dry they likely need some reconditioning anyway. Was the work done a complete rebuild inclulding a new Cam? If so, and the rocker shaft assembly is correct, than John Mummert's advice is likely next..

Paul