Quote:
Originally Posted by LS1ow
The piston is at TDC twice for every rotation of the cam. 1 time at the start of the 4 stroke cycle/end of old cycle, 1 time at the halfway threw at the end of the compression stroke/start of power stroke.
When the timing gears are Dot to Dot it is TDC at the end of the cycle/start of new cycle. When the timing gears are both Dot at 12, it is at TDC, but the cam as at the end of the compression stroke/start of power stroke.
Which TDC should it be timed at ?
|
The piston goes up and down, it doesn't give a **** if you are calling it compression or power stroke. The cam controls the valve train timing. So long as you install the cam dot to dot or 180* from that as bear was saying, the motor will operate correctly. We don't have a dizzy to worry about timing here. I also believe with the dowel, you can only install the cam correctly. I haven't done an ls cam swap so I don't know. Dot to dot as you did should be good.