Boosted...which gear ratios?

[Jeff's FRC]

Whats all done to yours?

As far as power mods, basically a gen2 Whipple with 3.125 pulley, stainless power catless long tubes, Fore fuel system, tuned by PBD on E85.

I've got 3.55, seems to be a good compromise for a boosted manual.

Depends how much power you’re making. I think with a PD blower, the 3.55’s are good to about 750rwhp then a switch to 3.31 would be beneficial.

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[Slow-S550]

As far as power mods, basically a gen2 Whipple with 3.125 pulley, stainless power catless long tubes, Fore fuel system, tuned by PBD on E85.

Depends how much power you’re making. I think with a PD blower, the 3.55’s are good to about 750rwhp then a switch to 3.31 would be beneficial.

Ya I am debating on what size pulley to run. Mind you I will be on pump gas. Im at 3.875 now. Thinking of going down to 3.5" which they say will give 3psi more. Should put me well over 800. Im at 770 now. Still on stock clutch stock driveshaft and stock axles lol

 

[LSchicago]

I think almost all a10 boosted folks are running 3.15

I still have my 3.55's, but going to a 29.5" tire next week. (315/50/17).

 

[Jeff's FRC]

Ya I am debating on what size pulley to run. Mind you I will be on pump gas. Im at 3.875 now. Thinking of going down to 3.5" which they say will give 3psi more. Should put me well over 800. Im at 770 now. Still on stock clutch stock driveshaft and stock axles lol

On 93 pump I think a 3.625 is generally regarded as the smallest pulley you should be on and is around 11-12psi. If you're at 770 now on pump, I'd stay there if it was my car. You're asking for trouble...lol

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