decepticon

ok i was wondering which is a better way to go, swapping in a better motor? Or going forced induction?

can some point me in the right direction? and possiblly where to go? i have a 2.4 4cyl pickup. i put 32 inch tires on it and so far a 2inch body lift. The prob is, the size of the tires rob lots of power from the motor. I hardly use 5th any more except on flat highways.

gwhayduke

Neither....
You'll eventually have to change your front and rear diffs out even if you go with a engine swap or forced induction.

The problem is that by increasing the diameter of your tires, you effectively lowered (numerically) the ratio of your differentials. They were originally installed for a ~25 inch tire which meant that your engine would move the truck ~75 inches for every 1 revolution of the tire. It now has to move the truck ~100 inches. 33% further....and without doing any calculations, this requires a lot more energy than previously.

Now your same vehicle is pushing a larger mass (larger tires=larger mass) with the same engine and same gears. Only problem is that when you increased the diameter of the tires, the engine is now turning slower and is no longer operating in it's torque band...same problem any engine you swap in is going to have.

Go with gears. After that, the power choices depend on your wallet and the health of your current engine.

Churnd

I agree. Gears first... engine later.

decepticon

i see very helpful. what gears should i get and where can i find them?

Victor

More than likely you have 4.10 gears. You should probably go with 4.56 or 4.88 gears, depending on the kind of wheeling you do. If most of your driving is around town and highway then the 4.56 will work pretty good. If you offroad a lot or offroad in situations where you would have to feather the clutch a lot to keep the truck from stalling go with 4.88. Another benefit of 4.88 is that you can eventually go to a 33 inch tire without another regear.