Who has a 10% ESM Jackshaft pulley?

J57ltr

Registered User
I am trying to find out what the outer diameter of the large pulley is supposed to be.

Thanks

Jeff
 
Preferably to .001", I would also like to know if the small pulley was reduced as well. I have a chart of all the pulley sizes available for figuring boost.

Thanks

Jeff
 
ESM big end 5.308"
small end 3.885"

Stock small end 3.920" +- .005" (had a hard time getting this measurement with a dial caliper)

Stan W
 
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