me and my 72 and my problems

[1lowc10]

ok i'm new to the site but i'v been work'n on trucks seriously for the last 6 years. ok i'm 20 years old and run my own custom shop here in florence al i do mostly custom body work and frame and suspention work. and befor that i worked for various body shops and the last place i was at built old tri5 chevys and funny cars so i'm a certified nhra tig welder. my truck is 72 c-10 that i got for my highschool graduation from my dad, we were ride'n in his truck and seen the 72 in a driveway witha for sell sign on it and the guy onlly wanted 600 for it so we got it (it was a piece) came with stepside bed and ac but thats all gone now. now the truck is flat black with the markers and trim shaved away along with the firewall (kept the door handles and the tailgate and lights trim) with a suicide hood and it lays the rocker hard (not pinch) thanx the a backhalf by me and z'd front frame with new bushings and everything striped and painted high gloss black. it has a 350 mild build ( have no idea whats inside it) and a 700r4 with the factory rear end. and now for the problems i drove the truck yester day for the first time in the 2 years i've owned and A the oil pressure drops down low after it warms up B the tranny does not shift into 4th C the turn signals dont work and did work about a month ago i also but a painless wire'n kit on it D i'm new to motors and for some reason i keep burn'n out spark plugs it has a holly 650 carb and electric fuel pump on it but i dont know how to adjust the carb or realy how to set the timeing. so sorry for the long post from the newby but this is a great site and i've read alot of the other post and yall seem to know more than me so any help would be great