Have anyone with a high power car, drag car or something used a aftermarket oilpan without mounts for the trans? is it strong enough?
Stock oil pans are bolted to the trans and probably adds some structural strength. I have a aftermarket pan without the trans mounts, and will only use the bolts that goes in the block.
I guess a stock powered car will be fine but when I have 800rwhp it may not be strong enough?

any experience? ever heard about anyone going bad?

 

There are thousands on thousands of 1st gen Chevy's, Fords and Mopars that make ridiculous horsepower and the bell housing don't bolt to the oil pan.

Run it.

 

Good point there!
But arent they usually steel blocks and comes like that from factory and are disigned to be strong enough like that. The LS comes bolted to the sump from factory and it may be a reason.

Anyway, I have not heared about anyone braking their engine because of this and its probably not very common sins no one have said anything about it now.
I will just run it like this

 

Trans case is aluminum on all of them.
A trans bell housing is super thin compared to a LS aluminum block.
If one was going to break it would be the trans.