I see all kind of adds for a lower pulley that can be interchanged for different boost levels and save weight . The adds are mostly for lightnings. Will these pulleys fit the 04-08 model f150 roushcharged ?

 

Yes.

 

I'm using the Metco lower pulley's for the Lightning on my '08 with Roush Supercharger. They're also a lot lighter than the Lightning setup in the Roush kit.

 

yes, you can. I started with an ASP one piece 2+ lower from Troyer and now I have worked my way up to a Metco two piece 8+ lower

 

Doesn't only certain year lightnings work? The 99-01 or something like that?

 

I believe it is 01 -04 lightnings because the 99-00 used a smaller inner hub hole

 

Aghh had it backwards.

Could the pulley off the lightning still be used on a single belt drive centri unit?
Also the stock lightning pulley is already larger than the f150 right, so a 2lb lower lightning crank will net more when placed on the f150?

 

No.

 

No. The 2lb lower will net about 1.5lb with the Roush setup because the upper pulley is larger than a lightning. Roush intercooled pully I think it is 3.23" vs lightning 2.93"