Jamie Miles
Well-known member
I am building a '69 1/2 Maverick. I am planning to put a 250 in it out of a 1974 Maverick. Here are my current plans:
Ignition: I am planning to use a Duraspark II distributor with the larger cap. I am going to put an MSD ignition box on it, with a "to be decided" brand TFI style coil.
Cooling: I am planning to use a 3 core Mustang radiator. I will be looseing the fan attached to the front of the water pump in favor of an electric fan. Question 1: Is it worth getting rid of the stock fan in favor of an electric fan? I have read time and time again how much of a drag the stock fans are.
Fuel system: I plan on keeping this all stock with a Carter RBS 1V carb, and I will get rid of the EGR on the 1974 engine. I am going for gas mileage here, not all out power.
Exuast: This is where my second question comes in. I really want to put a single out header on it, such as the one from Mustangs Unlimited since they are local to me. My exaust will Y off about mid way back under the car with "to be decided" mufflers or glass packs. I am mainly doing this because my current '72 daily driver is the same way and I love the look of it comeing out the back of the car and it sounds pretty decent. If I put a header on it, will it hurt my gas mileage any over running a stock manifold?
The transmission will be a T5. I will be using the T5 bell housing with cable clutch and '0 balance' SBF flywheel. I am planning to run somewhere around a 3.00 gear, however that will be decided after the car is running and I can figgure out for myself what gear feels and performs best to me.
This car will mainly be a highway driver, about 80 miles a day on the interstate. My current daily driver '72 Maverick is getting 25 mpg with a stock 250 and C4 that has a mild shift kit. It has a 2.79 rear gear. I would like to improve at least a couple of MPG over that.
The stock 250 has served me well for highway driveing so far, so I am not really to concerned about getting more performance out of it, just want to improve the driveability and gas mileage as much as possible. Does it sound like I am on the right track?
Ignition: I am planning to use a Duraspark II distributor with the larger cap. I am going to put an MSD ignition box on it, with a "to be decided" brand TFI style coil.
Cooling: I am planning to use a 3 core Mustang radiator. I will be looseing the fan attached to the front of the water pump in favor of an electric fan. Question 1: Is it worth getting rid of the stock fan in favor of an electric fan? I have read time and time again how much of a drag the stock fans are.
Fuel system: I plan on keeping this all stock with a Carter RBS 1V carb, and I will get rid of the EGR on the 1974 engine. I am going for gas mileage here, not all out power.
Exuast: This is where my second question comes in. I really want to put a single out header on it, such as the one from Mustangs Unlimited since they are local to me. My exaust will Y off about mid way back under the car with "to be decided" mufflers or glass packs. I am mainly doing this because my current '72 daily driver is the same way and I love the look of it comeing out the back of the car and it sounds pretty decent. If I put a header on it, will it hurt my gas mileage any over running a stock manifold?
The transmission will be a T5. I will be using the T5 bell housing with cable clutch and '0 balance' SBF flywheel. I am planning to run somewhere around a 3.00 gear, however that will be decided after the car is running and I can figgure out for myself what gear feels and performs best to me.
This car will mainly be a highway driver, about 80 miles a day on the interstate. My current daily driver '72 Maverick is getting 25 mpg with a stock 250 and C4 that has a mild shift kit. It has a 2.79 rear gear. I would like to improve at least a couple of MPG over that.
The stock 250 has served me well for highway driveing so far, so I am not really to concerned about getting more performance out of it, just want to improve the driveability and gas mileage as much as possible. Does it sound like I am on the right track?