Should i lower pullies?

[jayroca]

Currently i have a stock tune and i have zero knock at wot on a 3.5 pulley can i lower to a 3.4 or 3.3 o 3.2? I'll be maxing fueling after that... Tune for my E85 2.8 build when Tyler can swap tunes with HPT

Mods are :
Xp cam
Double Roller Chain
130#Springs
Stg3 heads
104 Plugs gapped to 55
Sd headers
Gen V Blower
Intake

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[97AutoXVette]

With the cam, heads, headers, etc.. I would think you should be able to run a 3.2 without issues (unless the GenV really adds that much more potential for KR). Once you throw in E85, I bet you can drop several more!

 

[GTP89]

I have a 3.4 pulley on a gen v setup with vs cam and stock heads full exhaust. No Kr.

With ported heads and e85 you haul be able to run a 3.0 without issues.
I will do a 2.8 since I am doing e85 and full stack ic.

 

[16MustangVet]

^^^^ 2.8 on E85 will be cake on ported heads and XP cam......Hell 2.8 on S1X cam and STOCK heads works too.......

 

[16MustangVet]

Ohh and I hope you got the rewire and a good fuel pump in to go along with the 60# injectors...