Distributor replacement

[lftd94z71]

So, I might have made a big oops. Putting my motor back together and I have a new distributor but unfortunately taking the old one out I didn't mark anything and I turned the motor with intention of adjusting the valves but was told the distributor has to be in first so you know which stroke you're on. How do I correct this? The motor is on a TDC I just don't know which one.

 

[IOWNJUNK]

Not a big oops. What motor, year? Vortec or tbi?

Only difference is newer motors have numbered spots for wires.

When both valves are closed on #1 cylinder and timing mark on balancer is lined up thats TDC #1. Start there.

Line up dist. so it will drop in with rotor pointing at #1.
Newer motors have numbered caps so you have to use them. Older tbi motors you can just pick a pin and follow the firing order around.

 

[lftd94z71]

Not a big oops. What motor, year? Vortec or tbi?

Only difference is newer motors have numbered spots for wires.

When both valves are closed on #1 cylinder and timing mark on balancer is lined up thats TDC #1. Start there.

Line up dist. so it will drop in with rotor pointing at #1.
Newer motors have numbered caps so you have to use them. Older tbi motors you can just pick a pin and follow the firing order around.

It's a 98 350 vortec. How do I know if the valves are closed?

 

[IOWNJUNK]

While you turn engine over watch rocker arms on #1 cylinder. When they are both up (closed) that is TDC. Timing mark should be close, turn engine till timing mark lines up. Thats where you want it to install dist.

 

[lftd94z71]

While you turn engine over watch rocker arms on #1 cylinder. When they are both up (closed) that is TDC. Timing mark should be close, turn engine till timing mark lines up. Thats where you want it to install dist.

Thank you. Saved a lot of headache.

 

[IOWNJUNK]

Anytime man, hope it helped.