i put a upper pulley on today and the result were out of this
world.i made it into the 400/500 club

419.8 rwhp
523.6 rwtq

before i had a 5lb lower only and made
354 rwhp
440 rwtq

i'm going to go to the track tomorrow i'll post results sunday night.


tony

 

Nice Numbers...

Are those SAE or standard numbers? Do you have a graphic that you can upload?

Was it a stock L upper?

Ken

 

they are sae #'s i'll try to post the graph later.

 

354 to 419 with an upper? Are you sure that's right? That's 65 hp. Considering that lower pulleys account for 10 hp per pound of boost, that must be one small pulley.

 

Did you do a fan and a tb at the same time too ?


And maybe a 50 shot. LOL

 

no fan or tb yet!i gained 4 pounds of boost and a
leaner tune up.a/f went from 10.4 to 11.4.remember
a 2lb lightning upper is 4lbs on a hd

 

Did you install this upper pulley yourself? If so how hard was it. And what other mods if any do you have done? Thats the most I have seen posted here as far was rwhp. Those are good #. Congrats

 

What is the max boost you are seeing?