Ok i have a El camino ( original black 84 SS choo choo 3 speed auto) I love this car to death its been my side project for over 2 years now. The body was totaly roted and the frame was gone. I dont drive the car alot but when i do this damn V8 HATES to run when its cold.. it was 70 out last night when i tryed to run it. My timing is dead on. Fireing order is right. The car runs like a champ when it gets hot, The motor is fresh i put 500 miles on the car since i did a body off. My question is.. would a block warmer help me at all? remmeber the car dosnt want to start even when its 80 out. I never had this problem before. My friend said it was my vortec heads and what i have for internals, its a 1st gen 350. Not to badly built, 650cfm holy, Vortec intake . Hooker headers and stright 3inch pipes. msd 6A , MSD distrib. heads were shaved and bored to 4in ( its more but i forogt) Dule core radiator with eletric fans. Holly fule pump. only running alt and water pump off pullys, eagel crank/rods/pistons. Crane cam ( forgot the lift but its a mean cam) and stock rollers that came with heads. Motor is full roller by the way. about 320-370 Hp and tourqe has to be over 400 its a mean v8 when it runs lol. thanks for any help sorry for long post.