Quote Originally Posted by paulo suica
ok I go to place in one talks back of pick-up ford 1940, that this with 307:1 differential maverick and exchange 3m ford I am wanting to improve the engine in relaçao(relation) to the performance and consumption of combustivel I wait that these informaçoes(information) help thanks
Paulo,
I'm having a bit of problem with your English (but since I can't speak Portuguesa.... ) so I'm going to try to understand what you are saying so please don't get upset with me and others if we ask the same question several times.

You are saying that you have a '40 Ford Pickup with a 302 Ford engine. You also have a Maverick 8" Ford differential with a 3.07 to 1 ratio and a 3 speed Ford transmission. You want to improve the performance - in horsepower and gasoline use (miles or kilometers} per gallon or litre.

First of all - a Maverick(in America) did not have a 3.07:1 differential ratio. It is probably a 2.75, 2.79 or 3.00 which are the most common though there are several other ratios?

Next, what kind of carburator or fuel injection and what type of distributor(points or electronic) is on the engine? What is the approximate year of the engine?

With that kind of information we can start to understand you question better.