Originally Posted by
78_f150
thanks. only reason i ask is, to install the springs pretty much requires pulling the heads. i know you can fill the cylinder with air to hold them up but it requires a special spark plug threaded fitting piece.
The motor is fresh, only has about 30k miles on it and i dont want to have to pull it down again to do the work. I just want a decent mild cam, increase some power. already has headers, edelbrock intake, edelbrock carb, comp cams double roller timing set. i think i have found a good cam that will work great.
Actually, I seldom even use air. If you don't turn it way down the air will end up pushing the piston down in the cylinder, then air ends up getting in anyways. I just run the piston down and feed a old extension cord in, the thick round ones work best. Then move the piston up till it stops, sometimes the cord won't hold one up and you have to try again. It just makes me feel better knowing the valves can not drop.