Pully question

[BlownReptile]

I just recently picked up my Cobra- and it is currently bonestock. Eventually, I want to go Whipple/ported (still undecided)- but for now I want to do a pulley swap, so I have some power while I gather up all the supporting mods for the power I want to eventually make. Whats the best pulley setup for an unported Eaton?

 

[wlg101190]

2.93 upper 4# lower, best belt wrap, but a good amount of heat. I have been running it for a while, beating the hell out the car and no problems.

 

[BlownReptile]

What boost are you seeing with that setup?

 

[Evs04Snake]

subscribing........What is best setup without changing alt. pulley on a stock unported Eaton?

 

[MustangMikeKy]

i had a 2.76 upper and stock lower . . . made 474

other things on it were FIPK, TB, O/R X, catback

 

[BlownReptile]

If just going with an upper pulley, do I need to swap the idlers?

 

[MustangMikeKy]

If just going with an upper pulley, do I need to swap the idlers?

mine were stock . . . when I went to the Whipple, I def needed an upgrade, but my stock ones were fine for my upper only setup . . .

i do recommend getting a snub idler for belt wrap, and if u get an upper, get a billetflow "non slip" pulley . . . i never had any slip :rockon:

 

[04cobra13]

2.76 upper with the BF idlers....this set up u can use the stock belt...made 14#s of boost.

 

[BlownReptile]

Looks like you guys are making really good numbers with the 2.76...

 

[96stanggt]

If you not going to go with a lower pulley definetely get the 2.75/2.76 pulley. You don't need to change the idlers, but adding the aux. idler will help with preventing belt slip. If you want the most out of it then a lower would be needed. If I was doing it I would add a 4lb lower along with the 2.75 upper.