Hi, I'm pretty much new, or a beginner, to engines and hopefully will begin working on my project this fall. It's just a general question I have to help me choose which engine to go for. So my dillema is that I would really like a Big block in my 74 (preferably a 502), but all of the people I have personally talked to highly suggested that I should go for a 383. I would really to go for a high torque, all motor engine and will be more for street/daily use. I understant that a big block build be more pricey to go about, but about how much would you say it would be?...also, I know this should be the last of my worries haha, but how much difference in mpg is the big block from the small block??...sorry for such a long post. It's just been itching my back. Any help would be HIGHLY appreciated.