LFP 2lbs Pulley and....

[F8LSNK04]

Hey guys Im thinking of doing a upper and lower combo with either of these two combos:

1) 2.80 Upper, Metco 100mm Aux Idler, LFP 2lbs Lower. (What belt size would I need? And about how much boost would I see?)

2) 2.80 Upper,(3)Metco 100mm Idlers,(1)90mm Metco Idler, LFP 2lbs Lower. (What belt size would I need?)

*Which one would be better? Even though the only difference is the Idlers. Thanks a lot guys :thumbsup:

 

[AMB]

F8lsn04

Do not change the upper pulley, just change the lower pulley and all the idlers. You will have better belt rap and less belt slippage with a larger upper pulley. Go with a 4# or a 6# lower and a larger alternator pulley.

AMB

 

[93Snake]

do you plan on doing a ported blower at any point? the Lower pulley will make some nice tq numbers... if you want to do an upper lower combo my Suggestion would be to do a 3.1 upper with a 4lb lower pulley. thats if you absolutley have to do a lower pulley... Peronsally I'd just do the 2.76 Billetflow Non-slip w/the billetflow idler pulleys and call it a day