i bought an Air Raid intake system and throttle body spacer. it cost just over $300, and it feels like i have a new Jeep. it was very easy to install, took me less than an hour. i have 33 inch tires, and my 4.0 had a hard time keeping up in fifth gear before the install. now my power is better throughout the rpms. generally, any time you decrease the airflows resistance from intake to exhaust, horsepower, gas mileage, and throttle response is increased.
Chip
some say 420 others say 425 but its around there
it makes you exhaust louder or " meaner " and some say it causes an increase in horsepower
it is hard to say considering i do not know the specific car, but here are some general mods that will improve general preformance and horsepower....cold air intake, exhaust system, new cam, bigger gears, port and polish heads, supercharge or turbocharge it(this will be pricey $1000+ but will add near 100 more horsepower), new ignition wires(faster throttle response), and the always stated, what you dont need, get rid of. Overall, i suggest getting the cold air intake and exhaust system. these are probably the cheapest and will make your car much more gas effecient and will add SOME horsepower. hope this helped:)
Some do and some don't. Jeep sells then with your choice.Some do and some don't. Jeep sells then with your choice.
A Chevy 305 with a roller cam will have MORE power than a 305 with a flat tappet cam if both are installed in the same engine. The horsepower of any 305 depends on what all is done to the engine. Changing from flat tappet to roller will gain some. There are other ways to increase horsepower and there are other ways to increase torque.
Some Jeep Models have them.
the easyest/cheapest solutions: a 4barrel carb a 500-600 use the crank of a ford 302 engine buy some racing headers and maby a exaust use smaller gaskets to increase compression
a K&N air filter will probably help some with Hp and it will also increase your gs mileage!!! good luck!!!
Depends on what year. Some are mounted on the rear door. Some are mounted inside the rear of the Jeep. Some are under a cover in the floor of the rear. Some are mounted under the rear of the Jeep.
Boring out an engine to get more horsepower is a bit of an art form. The actual increase in horsepower will depend on the bore ( the new volume of your cylinders ) and the weight of the car. Keep in mind that when you bore out your motor you are going to have some differences in fuel and air requirements. This means oversize valves need to go in your head or larger injectors and, depending on your ecu and o2 programming, maybe a high performance chip. The actual increase in horsepower is not easily calculated; even with the actual size of the bore and type of car.
I'd say somewhere in the neighborhood of 130-140 horsepower, since some people have suggested that 800cc is 50 horsepower.