Roush TVS 80mm vs 85mm

[ironreaper23]

I am looking for people with Roush TVS setups that have gone from the 85mm pulley to the 80mm.

I have an 85mm pulley, 123mm JLT intake, and 47lb injectors. The rest of the mods are in signature. I was debating on swapping the pulley out to either 82, 80, or 79. Not sure it will be worth much significant power gains in the long run. Any one made the switch to the 80mm with the JLT intake and had issues with the fuel? Roush's kit added only a BAP compared to what I have.

Is it worth the switch? Which direction should I go with this? I have plans on lightening the car some and will only be drag racing.

Thanks for the help!

 

[Scott8583]

I started out with an 85, switched to an 82 & then a 79. I have the JLT @ long tubes with cats. The 82 gave me .2 in the quarter without any changes. I spiked 93 with race fuel (no BAP) when running the 79 for another .2... Didn't change the tune with either pulley except for torque management on the shifts (auto).