1989 Chevy 5.7 truck and the distributor is out how do you put it back in right?

Answer 1

: I like to thank you for that answer, I was just about to ask that same question altough my 454 is out and I can see the velves. I'm trying to set the valves but wasn't sure if I was on the right TDC. After I adjust the number one exhust velve I noticed that the valve slightly opens up. And am I right shouldn't they both be closed and this point? The question may seem simple but it isn't really. I assume you are asking this question because all spark plug wires have been removed and now you don't know where to begin. If you can find the timing mark on the dampner pully, slowly turn the engine over using a socket wrench or any other manual means until you get the engine block timing mark to line up with the mark on the pully. That will be either TDC #1 or the crank may be 360 degrees out and #1 may be between the exhaust and intake cycle. If you are fortunate enough that #1 rockers are above the oil fill cap you can watch to see if either the exhaust or intake valve opens when you turn the crankshaft slightly either direction (at least 15 to 20 degrees to be safe). If neither valve opens you are probably at #1. If you can't see the rockers, pull #1 spark plug and put a finger over the hole. Have an assistant slowly turn the engine and feel for the compression to increase when the crankshaft approaches the timing mark. If you don't feel the compression go around again. Once you are certain that you feel the compression rock the crankshaft back and forward a couple times near TDC and you should feel the spark plug hole suck just a little, just to make certain you are truly there. Whichever method you use, once you have located the position for #1 put the pully mark at TDC then look to where the rotor is pointing on the distributor. That is #1 on the distributor. This was copied from a previous post, I cannot take credit for this answer but posted it for your help