This is topic difference between aluminum & steel underdrive pullies in forum Tech Talk at Northern California Ford Owners  .


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Posted by SSF 50 (Member # 7219) on :
 
wats the difference between aluminum & steel underdrive pullies 4 the 5.0s?
 

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Posted by ajs91CHPcoupe (Member # 10217) on :
 
i may be wrong but i think the only difference is the rotating mass (weight) its less weight for your motor to turn, like getting a lighter flywheel, etc. i doubt you get 1 hp extra if youre lucky.
 

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Posted by 84SVOrick (Member # 9039) on :
 
The alumn offers less rotational mass (weight) and size then steel. Steel offers less weight with the reduction in size. Alumn cost more. i used to have steel ford racing u/d and they were steel. Steel would b stronger.

I say go alumn, seems to offer more then steel
 

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Posted by SSF 50 (Member # 7219) on :
 
i have always used steel but jus came up on a set of aluminum 1s and always wondered the difference...of course i know weight but wasnt sure if there was a good & bad?
 

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Posted by ajs91CHPcoupe (Member # 10217) on :
 
no difference really they both get the job done
 

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Posted by Sic Beast (Member # 6771) on :
 
just weight and the color..lookz nicer..if your into the alum look!
alwayz had alum and no problemz
 

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Posted by Duncan Motors (Member # 7045) on :
 
ive had the aluminum wear out grooves in the pulleys, i dont think for a long haul i would use the aluminum . the steel would last longer.
 

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Posted by Blind (Member # 3052) on :
 

quote:

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Originally posted by Duncan Motors:
ive had the aluminum wear out grooves in the pulleys, i dont think for a long haul i would use the aluminum . the steel would last longer.

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