69-er

On my LS2 and T56 combo, I noticed when I was mocking up the pan to the transmission, only the lower left bolt would line up to a hole in the pan. The lower right side pan bolt hole is just outside the trans bell housing and maybe an inch or so away from the corresponding bell housing hole.

Anybody know what I might be missing here? I only have 7 bell housing bolts; there are eight holes in the bell housing. I guess the extra hole is not being used?

Look at the pic; you can see that the hole in question is right below the cut I made to modify the sump depth.

69-er

Bump.

1981TA

iTrader: (7)

what car did the trans come from?

gofastwclass

iTrader: (2)

You don't need the extra holes, it is a NVH (Noise Vibration and Harshness thing). Gen I / II's didn't have them and broken bell housings that have been properly tightened are extremely rare. Mine has been that way over three years with no issues.

Are you using the "muscle car pan" from GM? Mine didn't line up either.

69-er

It's from an 06 GTO.

69-er

I'm guessing that's how it came. I just don't remember!

I always assumed it was the stock GTO pan. It was already installed in the car when I started on it. It may have been swapped. I'll have to look into that.

the_merv

iTrader: (88)

I never install them..if the Bell Housing shatters the trans can go, I dont want the Oil Pan going with it.

That is definately not a GTO Oil Pan..or the Muscle Car Pan.

69-er

I looked the "LSX Oil Pans" thread again. It's the Hummer H3 5.3 Alpha (AKA LH8?) pan. It's obvious now that it was changed out when they did the swap. But, it's still strange that this hole doesn't line up. I figured all pans bolted up to the engine and transmission the same way. They were just shaped differently for the different applications.

Don't think I'll have to worry about it!

1981TA

iTrader: (7)

I wouldn't worry about it. For a long while, I had a TH350 bolted to my LS1, and it used only 5 bolts. No problems there.

the_merv

iTrader: (88)

There's a big difference in these pans...look at the bottoms..





Both of the LH8 Pans(Muscle Car Pan) I have dont line up on that hole at all..