underdrive pulleys
underdrive pulleys
I have a 1990 f-150 xlt lariat. its a 4.9 litre i6. has 145 hp right now and its still stock.
thinking bout getting underdrive pulleys. from what i hear they are a good inexpensive mod. what exactly are they and will they go on any truck? thanks for responses in advance.
thinking bout getting underdrive pulleys. from what i hear they are a good inexpensive mod. what exactly are they and will they go on any truck? thanks for responses in advance.


