I picked up a BB bellhousing from a buddy the casting number is the specs below
 2892262    11" clutch A-833   1968 B-body C-body 383 440 4.80" IBR (cast dates include 9/5/67 10/20/67)  Cast Iron. My question is can I use this in a 70 challenger?
Mike

I want to say yes you can, but I am not sure is the Z bar dimension is the same between it and the correct 513 alum you car would have used . A friend , RIP , put a lakewood blowsheild in a 71 Challenger and had to trim the Z bar a little.

That bellhousing uses a 143 tooth flywheel.

Unfamiliar with using the stock bell,but I will throw out that using a Lakewood 143 tooth bell was an utter Son of a Bear in an e- body.Right up against the floor tunnel, and you could not get the motor high enough off the mounts to remove the engine the time honored way, had to unbolt mounts from block and pull motor straight forward,
AMHIK