Stock Pulley Size??

MisterM52

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Hi, this may be a noob question so my apologies if its been answered before but I cant seem to find any info on it with google or search function.

What is the size of the stock pulley on the 2007-2012 M122H blower on these cars and are they pretty much the same for all other fords from factory (not counting in special editions with smaller pulleys etc)

Thanks :0
 

relpwr281

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Hi, this may be a noob question so my apologies if its been answered before but I cant seem to find any info on it with google or search function.

What is the size of the stock pulley on the 2007-2012 M122H blower on these cars and are they pretty much the same for all other fords from factory (not counting in special editions with smaller pulleys etc)

Thanks :0
I believe it is 3.25 if I remember correctly

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MisterM52

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Thanks for the info!

Whats involved in swapping it out with a 3" or even 2.7 or 2.5"? I am wanting to run the blower at ratio of 2.0 or around 14K RPM, crank is around 5.45" (its for another project).

and any idea of the CFM output at 11000RPM?? cant find a map that shows CFM.
 
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sleek98

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Need to grab one of the pulley removal tools. I used the vmp version when I swapped pullied and it worked great.
 

Catmonkey

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Pretty sure the stock pulley was 3" on 07-12. The TVS equipped 13-14 had a smaller pulley of about 2.7".

When you say crank is around 5.45". Are you talking lower pulley diameter? To spin the blower 14,000 rpm or a 2:1 blower ratio, you need a pulley half that size, so roughly a 2.7" pulley with that lower pulley diameter. The GT500 used larger lower pulley diameter of 7.1". Assuming 7,000 rpm inferred from your criteria, you'd be pushing about 1,148 CFM. If you mean 11,000 rpm for the blower, you'd be moving about 902 CFM
 

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