400CI truck engine?

[LSX-Nation]

K so here is whats going on.

A friend and i are planning on putting this engine into a second gen camaro. It wont happen for sometime because of funds but i would like to see if i can get more info on the engine. Its been at my friends shop from a while sitting on a engine stand so we are going to try and make good use of it. So what i know so far is that its been sitting for probably 15 years, its a 400 cubic inch engine, my friend says he ran the block number. There is a unknown problem with it, no one can remember exactly why it was pulled from the car. Looks to me like it was modded and raced. Here are some pictures.





Block Number


Number on the Head.


Roller Rockers which i don't think are stock for a engine this old??


Someone told me the Double hump means performance head?? Not sure if that's true or not.





Any info is appreciated thanks.