Engine PRW rockers, TFS heads, and pushrod length

[John3]

I bought someone else’s project car and I’m starting to second guess a lot of info the prior owner told me. Long story short I’m chasing a lot of issues and now second guessing what was done with the motor. I have the intake off now looking for vacuum leaks, wires that weren’t hooked back up, along with missing/broken/hooked up wrong vacuum lines.

So while I have it open I figured I would look at the rockers and pushrods. I was told there were crane rods but can see they are actually trick and flow 6.600” long rods. What concerns me a bit is the 6.600 length, I just can’t seem to find anyone using that length. I know every motor is different but this seems out of range for what others are using. The rockers are PRW SS 1.6 with 3/8 mount. The cam is the infamous E303(according to prior owner)

Is anyone in here running 6.600 long rods? I know I will need to actually check this to be sure. What could some symptoms of short pushrods be? Is it just some power loss and early wear or more like poor idle?

Thanks,
John

 

[General karthief]

Look at the wear pattern on top of the valve stem, it should be centered.

 

[John3]

The wear mark is pretty centered but it also seems on the wide side. I would say it’s about .075 wide.

Also, is it normal for the rockers to be on a slant from valve end to pushrod end with TFS heads? You can see the wear Mark has the same slant to it.