It is a moto blue 8.4 '' pulley. Its is engraved right on the pulley. I thought the 4lber was 8.5'' soo why the HELL did I get a 8.4'' pulley. Or am I mistaken and that is not the right size engraved on it anyone??? PS it was bought through the ...... welll RPMOUTLET. Any comments? Thanks!

 

Doomed!!!!!

Sorry to say i've heard nothing but bad experiences from them.........basiacally this exact sort of thing.

I think they gave Rob a free belt or something by accident once though!!!

 

there seems to be a slight variation between all the different brands. .1 isn't going to be noticeable in any way.

 

ive bought stuff from rpm but i dont think they know anything about these trucks,they just print whats on the package,buy volume and sell it cheep.But if you need help good luck

 

Maybe it's the new 3.9# pulley.

 

The difference of the 8.40" O.D. compared to the 8.50" O.D. pulley is about 175 RPM at the blower at 5000 RPM of the crank. I figured this with a 2.80" OD upper pulley. I'm not sure what the stock one is. So at 5000 RPM the 8.50" OD is spinning the blower at 15175 RPM and the 8.40" OD pulley is spinning the SC at 15000 RPM. Not much of a difference but enough to **** you off.

 

ok... what size are the bolts on the converter. I have tried to remove them, and I am not sure of the size. Not a lot of room either!