upper pulley size/belt?

[alexr40]

hi guys

i am running right now a 4# lower. Which upper i need to add, just to go 2 more lbs.

i wish to be 4lower, 2 upper. what is the correct upper measure.

i would like to know too if i need a new belt

thanks

 

[Derek@Amazon]

why not just get a 6lb lower? when you add an upper lower combo you start messing with ratio's for boost... its better to just add a 6 lb if you wanna go up 2lbs more

 

[alexr40]

its just that i already got one metco lower. and its not interchangeable.
i would have to sell and then buy another ;(

 

[Jeff-'03]

i'd buy your 4 # lower if interested PM me

 

[wyd_trkr]

hi guys

i am running right now a 4# lower. Which upper i need to add, just to go 2 more lbs.

i wish to be 4lower, 2 upper. what is the correct upper measure.

i would like to know too if i need a new belt

thanks

alexr40, the belt size you will need with using the combination you have would be a 4080675 Gatorback. Hope this helps, as Check it out here:

http://www.southfloridapulleyhq.com/SFPH/lightning/ps_gatorback_belts.htm

:thumbsup:

 

[JGS107]

im going with the 2.8 upper and a 5 pound lower. i wasnt told anything about messing with my boost ratios.what do you mean by that.

 

[Derek@Amazon]

im going with the 2.8 upper and a 5 pound lower. i wasnt told anything about messing with my boost ratios.what do you mean by that.

its not as drastic with the lightnings you see it more with the cobra's like youll have a say a 4lb lower... and say a 4 (about a 2.8 on a cobra) you wont make 17-18's youll make 19-20

also bad 03cobra swapped out his 4lb lower on his KB and slapepd a 6lb lower on went from 21lbs to 30.... it was taken off though

 

[JGS107]

ooh ok i gotcha i was about to say damn because im getting my pulleys on next week and tuned and i dont want to break something...lol