Rocker shaft setup, Rocker shaft setup Options

[9**P-car]

I'm setting up the rockers & shafts on my '75 2056 build. I bought the Type IV Store spacer kit and a bunch of shims. However, there's not enough room between the rocker shaft bearing shells for the spacers, shims and rockers. I took the spacers and shells (like the pic below) to 3 local machine shops, and none were able to mill these down to the specs I provided.

Does anyone know a shop I can send all these to to have them milled down to my specs?

Thanks -Doug

[iankarr]

Hi Doug,

Pretty sure those type IV store spacers are intended to be shaved down / sanded (just the spacers-not the blocks) so that you have the required .004 float with rockers and shims installed. They’re aluminum, so easy to do on the bench with some 120 grit on a piece of glass (make sure you clean thoroughly). Alternatively, you can do as I did and have Tabari Andrade on the samba machine the blocks and provide a variety of shim thicknesses. If you haven’t seen it already, I made a valve geometry video about those shims with some tips from Jake Raby which you can find in the link in my signature. Note that the blocks need to be installed with the flat (non beveled) side against the head and the notch facing down…