Buick 225 pushrod length

I recently created a post regarding a 225 odd fire I picked up as a replacement motor for my CJ2A.
Although I purchased the motor as a rebuilt motor, I stripped it down to confirm that everything was fresh.
The motor does look good, as if it was rebuilt and sat. There was a small amount of surface rust on a few of the valves, however, a wire brush took that off. The pistons don't show any wear or carbon, and the cylinders still have the honing marks.
The only part I found with wear is the push rods, which had small indentations on both ends.
So I looked up the part number and found that virtually all of the 225 odd fire years call for a Sealed Power part number RP-3173. I ordered 12.
The rods just arrived and I have noticed that the rods are about 1/8" shorter than the rod I removed (see photo), and they are about 3/8" in diameter (specs show .313), as compared to the ones I removed which seem to be about 1/4" wide (see photo). The length of the ones I bought are 8.723
Here are the numbers from what I am working with:
Block Casting: 1358435 (this site shows 1963-65)
Head Casting B-1376348 (Site shows 67-74) -Note-One head casting is actually missing the 7 between the 3 and 6, and has a blank spot-casting error?

Anyways, my question is, what pushrods should I use? Any help is appreciated.

 

http://s840.photobucket.com/albums/zz330/tthstrm179/Pushrods/


Oops..here is the link to the photos.

 

The larger diameter pushrods are not right. The factory 225 used 5/16" diameter pushrods, the 231 oiled thru the pushrods and they were larger in diameter (3/8"). I would say send the others back as they are wrong for your motor. The indentions you speak of are probably not wear but where they were held between centers when they were made or small flats so that they did not contact in the middle or tip but rather on the outer edges of the ball socket.

 

Thanks. The larger of the two shown in the photo is the photo is the one I purchased, and the diameter of it is .313, while 5/16 is .3125. So I may have been wrong with my initial measurement (I'll use the micrometer shortly). Neither of the two have a hollow center for oiling.

Is there any reason that someone would have used smaller rods? Is a pushrod length tool easy to use? Should I just get one and measure?

Thanks

 

I have a spare set of pushrods in the garage, I will measure the lengths later this evening and post them.

 

The sealed power push rods are made from a chrome moly tube instead of a solid rod, thats why the larger diameter. If you look at the ball on the end of the rod there shouldn't be a hole through it. I just installed them on my 225 and they work great. I bent two of the stock ones.

 

The 225 rocker sockets are lubed through the push rods, AFAIK.

 

As Patrick said, nope, there lubed thru the rocker shaft and rocker arm.

 

Hmmm, ??? I went out and looked in my 1972 vintage book. It shows the rockers oiled through the head, and the rocker PR socket oiled through the PR.

 

Hi Patrick, I am not trying to make trouble, just trying to sort this out.

 

Yep, the 225 lubes the shaft thru the head then the rocker thru the shaft then the tip of the pushrod thru the hole in the rocker. Not sure what you have, if its a Chiltons its wrong. My service manual is an original from 1971 and it shows it lubes just like I said and like Patrick said the original pushrods don't even have holes in them.

Ok, just checked my spare pushrods. They are 8.688"-8.692" long. They are solid, not tubes, the body is roughly 5/16,
.3115-.3135 in diameter. The flat on the end is for oil to collect in to lube the socket, it is also ground on there not worn on. The flat is on both ends.

 

This is what is messing me up. Comp's pushrods for the 225.

COMP Cams 7869-12 - COMP Cams High Energy Pushrods - Overview - SummitRacing.com

 

Oiled.