Rebuild vortec 5.7 oil pan bolt placement

[ericcarney]

I know it has been a while, latest update, I blew up that 5.7 vortec that I slapped in the Blazer. So I snagged another one out of a wrecked 1500 and tore it down and I am finishing up a complete rebuild on it. Problem is, I forgot where the extended bolts go on the oil pan. I know two of them go next to each other on the passenger side toward the front for the transmission lines bracket, and there is a third one that goes somewhere, but I just cant remember. Any ideas?

 

[xenomarine]

I can't say for sure, but can you check what holes are deep enough with a depth gauge or piece of wire? I'm willing to bet they go near the timing cover.

 

[ericcarney]

The lengths of the threads on the bottom of the bolts are all the same.

 

[xenomarine]

Oh, damn. I'm guessing the area with the highest stress would require the longer bolt. There's quite a few pro engine builders around here that will be of more help, but I'm willing to bet the long ones go near front seal.

 

[ericcarney]

I'm probably using the wrong terminology, I am talkig about the bolts that have thread coming out of the top for attaching brackets with a nut

 

[4xcrazy]

Stud bolts...

I usually place them all in, but don't torque anything down until I know what brackets go where, once that's fingered out, I'll torque them down.

 

[xenomarine]

Oh...hmm. I believe I had those on the passenger side to hold positive cable to starter as well as other wires. I would put them wherever you think they would be most helpful for securing cables or lines. I'll see if I can see the bolts under my Tahoe to give you a better idea.

 

[ericcarney]

Awesome, thanks, that's kinda what I was hoping for, someone who had one who could take a peak

 

[ericcarney]

*peek