4.6 under drive pulleys

[jsfordboy02]

Has anyone ever used the ebay or amazon "cheap" under drive pulley sets, besides the Steeda ones? Or any other brand for that matter?

 

[jd4242]

I have a summit underdrive on my 4.6 its the dohc motor though(aviator), dont know if they use different pulleys..its a whole new crank pulley,not a bolt on..the kit was think $160,came with crank,water pump and alternator pulleys....

for my aviator the alternator pulley and water pump pulleys was all ready smaller than the ones they sent in the kit,so i used the stock ones..the kit was made for cobra or mach and they use larger ones than the aviator,assuming the aviator came with overdrive pulleys on the alternator and water pump to help with the load from rear ac/heat..

I dont know if the crank pulley added any power or mileage as i put them on as soon as i bought it..im also pulling it back off to go with a overdrive crank pulley for my new vortech. .pulley may be spoken for tho

 

[dgr6853]

Im using a MAC UDP from eBay. The old harmonic balance had to be placed onto the front of the new pulley. the alternator pulley wouldn't work on my 03 aviator and the water pump pulley was the wrong kind and wouldnt work on my Aviator.