UDP query

[Vortecmass]

Has anyone replaced stock factory steel pulleys for aluminum CNC pulleys?
Im interested of a UDP = under drive pulley. It works great on 4 and 6 cyl cars and trucks, but why not a V8? Are there any available on the market?

Thanks

---------- Post added at 12:05 PM ---------- Previous post was at 12:03 PM ----------

Im all the time thinking to reduce weight in components by making the engine and chassis lighter and stronger with aluminum, magnesium and titanium components.

 

[JennaBear]

Eh, not really worth it for the money you pay.

 

[Vortecmass]

Tell me how black bear tuning works

 

[TxTooTall]

Make it your last "bolt-on" mod. The aluminum pulleys have a tendency to get "spun" on the crank, or the outer ring just falls off.

Powerbond, SLP, and Summit Racing have the same pulley. It has higher shoulders for the belts, and I have yet to see one separate.