Yesterday my machine shop tried to measure the cam, installed in my 350 cui engine (1970, heads #11, c.r. 8.8, 4-bbl intake and carb, headers). First thing: Timing chain was stetched (about 12 °), so measuring will be inaccurate. We decided to pull out the cam. It was a crane powermax H-260-2. The cam shows wear at the top and the lifters are very, very easy to compress (so they are bad). My machine shop told me, that this came from wrong setting of the valve train (he told me, if he installes a new cam, he measures every valve/lift and put shims under the pivot balls or rocker studs to get the right valve setting). The next thing: the cam bearings show some wear too and should be changed. I don´t want to pull out the engine and pay a lot of $$$ to change the cam bearings (especially i don´t know the condition of the other parts (main bearing, pistons, crank). So i decided only to put in a new cam of crane H-260-2(with the old bearings), new lifters and a new timing chain and then set the valve train to correct specifications. And use a good HD30 oil (for good oil pressure) with ceramic additive. So i could drive the car this season (may be longer or shorter), until it is completely scrap and then build a strong 400 for the car. So what is your opinion ?
