Whipple, will a 4” pulley clear a whipple 132 mm TB?

As the title states, just wondering if this will fit to have less boost for the street.

Thanks for any information.

yes, up 4.125"

Yep it will. If I go OD damper I'm going to run that for my 93 setup

RockStang said:

Yep it will. If I go OD damper I'm going to run that for my 93 setup

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With a 10 rib gen 3 and 20 od I hit 17.3lbs.
I was told every 1/8” reduces boost by 1lb.
A 4” will ballpark 15 lbs or so, I I would expect that still to be too much for pump 93.

Evil 5.0 said:

With a 10 rib gen 3 and 20 od I hit 17.3lbs.
I was told every 1/8” reduces boost by 1lb.
A 4” will ballpark 15 lbs or so, I I would expect that still to be too much for pump 93.

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I'm at 12.5ish on the 3.5 so with 20% that's 4.2 which they do have a 4.2" pulley but I did forget I was running Octanium :lol: so yeah I probably won't be able to do that.

Evil 5.0 said:

With a 10 rib gen 3 and 20 od I hit 17.3lbs.
I was told every 1/8” reduces boost by 1lb.
A 4” will ballpark 15 lbs or so, I I would expect that still to be too much for pump 93.

Click to expand...

The 4.25" just barely fits. You can run 15psi on 93 on a built motor, with proper timing but using boostane would really help.

4.0 hood clearance from Clarence.
Shirley you might want to cut a square out of the liner under the hood.
Space is tight and a little hood flutter with a hard landing after clearing some rail road tracks at 140 can result in pulling hood liner chunks off...

You’ll know you are close when black anodized gets polished off outer lip...

Whipple SC said:

yes, up 4.125"

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Whipple SC said:

The 4.25" just barely fits.

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4.125 or 4.25? Hood or throttlebody clearance?

Are you on e85 with the 905rwhp?

rio16 said:

Are you on e85 with the 905rwhp?

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Yes E85 from pump.

Whipple SC said:

yes, up 4.125"

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I now can confirm a 4" fits, I will be needing a 4.125" and possibly a 4.25 if the 4.25 will work.