Originally Posted by cdminter59
What kind of car are you installing this motor in. Weight makes a difference. The heavier the car the more torque is needed instead of hp. How much vacuum do you need to operate power brakes, etc? Check out these graphs and look at the vacuum readings too. The larger the camshafts also need bigger carburetors and rear gears.
the gears I'll give you.. tho. lite cars can be mighty fast/quick with 2.73's and a big stick..
the bigger carb I call fowl on.. a 355 cid will need the same air flow.. no matter what cam you slide in it.. it doesn't become a 455 just because you stuffed a big cam in it..
the bigger carb also hurts the low end torque that causes the need for bigger gears 3.90/4.10/4.56
so please explain..