#5 & #8 not firing? need help.

[grapeknutz]

Hey Folks,

Got the cam out of my 81 and not only was #4 intake Completely wasted but at least three other lobes were all but totally gone! I reiterate there was no noticable rocker noise and the car ran fairly smoothly at idle. I also was getting up to 155 psi. and less than 10% variance in compression. I strongly recommend that you check the actual amount of lift that you are getting on all rockers. Hope you get it figured out soon MAKO.
Chris

Those cams from that era had bad lobe taper ( thats what spins a lifter on a cam) I have seen 0 taper where the cam should 10 thousant per inch lobe taper. At that time GM quality was spotty.