foxbod90

is 13 degrees timing good for a bolt on car with a aod? how much hp is it worth?

luckythirteen13

3-4rwhp

ewgoetz

Not worth getting underdrive pullies. Save your cash for a K&N filter or something. Unles u are gonna race it every weekend the pullies are more of a hasstle than they are worth.

Timspony

Waste of $$$ IMO...I'd look to put elsewere on my 5L!

Portmaster

We normally saw a 5+ rwhp gain on a pretty much stock 5.0. make sure the cooling anf charging system is in good shape. On a fox body I would go with March power and amp series unless you have an alternator upgrade. If all hp was that easy and cheap we would have it made. Most of the people who have problems with them have vehicles on the edge of needing a repair anyway.

kweb288

i did it, and as of now the only pulley i still have on my car is the water pump pulley... i thought it was a big waste of money, and not to mention once i put my s/c on they all had to come off except for the water pump

ALMOST STOCK

X2 on the March Power and Amp, I've never had a heating or charging problem using them and I'm using the stock water pump, radiator and alt.

foxbod90

i got mac pulleys

Tony71502

I've got the MAC ud pullies as well.

I'm on a stock cooling system with stock alternator. I have not had a single issue with charging or cooling since I put them on my car 2 years ago.

For not that much money and about 1 hour of work, I think its worth it. You can definitely notice the gain in power, at least I did. My previous owner put a flex fan on the car which was quite noisy... the reduced rpm on the water pump and pulley virtually eliminated the noise. That alone was worth the money to me.

foxbod90

how much rwh is advancing the timing to 13 degrees worth on a bolt-on 5.0? what grade of fuel do i run?