8a8mfh

I have a 1993 LT1. Right now I'm in the middle of changing the rear main seal, and rebuilding the transmission. Also replacing the exhaust manifolds due to cracks/leaks.

I bought the timing cover gasket set with three seals and the gasket. It doesn't look like theres enough room between the bottom pulley and frame to work in there. Whats needed to change the seals? Engine need to be lifted? I searched...

charliet615

You know, that is a very good question..My front seal leaks, which i understand is common, so i went to Mobile one high mileage 5w-30 to see if that will help. Too soon yet to tell..Mabey someone else can help or chime in on changing the front seal..Good Question.

Silver96ce

On an LT1 to change the timing cover seals properly, you should remove the cover. In order to do that, you have to drop the oil pan. That's because the bottom of the timing cover is fitted to the front of the oil pan. Over the summer, I changed all of the engine gaskets and seals except for the rear main. Per the FSM, I removed the exhaust, passenger cat, starter, oil filter adapter, harmonic balancer (both pieces), opti and water pump among other things to access the timing cover. Before it seemed like I had oil leaks everywhere - China walls, opti seal, crank seal. Now I hope it stays dry in there for awhile.

After I finished everything up, I found that the trans gasket is leaking. I had thought that the oil leaks were flowing back onto the trans pan but I was wrong.

8a8mfh

Well theres nothing like the satisfaction of knowing it will be fixed.
I pryed this at the notches on the outside and this is how it came out.

8a8mfh

Well I did the front today. Took about 6 hours including running around to get parts. Apparently my shortblock is not a '93 as suspected in another thread. I had to get the timing set with the big opti seal.