fastsc92
Registered User
Ok, I finally got around to degreeing the cam, after i was done x-mas prep. I made a piston stop, and found true top dead center. Then i used a dial indicator on the intake lifter ( the one closest to the front, right?). I brought the intake lifter to max lift, then set the dial indicator to zero. Then i went opposite engine rotatation about .100. Then i when in the dirrection of rotating to .050 before max lift, took a reading on the wheel (62), then kept going to max lift, then back down the other side of the lobe to .050 again, and got a reading of 148. I added the two together(210) and divided by two for a final intake center line of 105. This seems very strange because the cam should be installed at 112, and i thought most cams would be retarded after the grind, not advanced 7 degrees! Anyways, I checked this about 4 times with the same results. My question is, why is it so advanced? Maybe i have the timing marks off by one tooth. The dots were lined up the best i could see, but maybe its off a little. And my final question is, could i just keep the timing marks off by one tooth in order to correct the cam timing, instead of cutting a new keyway in the crank gear, or am i forced to get a keyway machined? It seems like either way would/should work. Because thats what i'm doing with a new keyway, or in a SBC case, offset bushings. Moving it one tooth should do the same thing right?? I'm going to check it all after the holiday and make sure the timing dots are lined up, but if they are correct...what should i do???