TDC on LT1
Melting Slicks
Joined: Jun 2001
Posts: 3,444
Likes: 0
Re: TDC on LT1 (STL94LT1)
I just got done ripping mine apart. Correct there are no timing marks.
The balancer is not keyed, so there is no guarentee. But the up arrow should indicate TDC. It is just a rough estimate as you can't really tell if the arrow is truly straight up or the balancer was perfectly installed.
I thought I was pointing straight up, but when the timing chain cover came off I was a tooth off from the dots lining up. So if it is critical, go through the sparkplug hole to measure.
The balancer is not keyed, so there is no guarentee. But the up arrow should indicate TDC. It is just a rough estimate as you can't really tell if the arrow is truly straight up or the balancer was perfectly installed.
I thought I was pointing straight up, but when the timing chain cover came off I was a tooth off from the dots lining up. So if it is critical, go through the sparkplug hole to measure.
Thread Starter
Race Director
Joined: Jan 2002
Posts: 12,261
Likes: 85
From: O'Fallon Missouri
Re: TDC on LT1 (Jay Axson)
Thank you Jay, I put my finger over #1 cylinder's spark plug hole to determine TDC. I just wanted to know if there were any precise marks on the engine or balancer.
Melting Slicks
Joined: Jun 2001
Posts: 3,444
Likes: 0
Re: TDC on LT1 (STL94LT1)
Good luck. If you want real accuracy I know that there is a special tool you can get that screws into the sparkplug hole that has an indicator. But an unsharpened pencil will do the trick as well.
