Looking at a new pull for my blower - Ford Mustang Forum
 
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post #1 of 8 (permalink) Old 07-29-2019 Thread Starter
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Looking at a new pull for my blower

Hi guys.
Well I have an 06 gt with a Paxton from brenspeed on it. 5 speed. Otherwise completely stock. I love the car. But I am considering a little more power. I haven’t had the car on a dyno but brenspeed claims 505 horse and 470 tq at the crank. I am considering changing to a 3.33 pulley and getting a dyno tune. What sort of power gains do smaller pulleys put out on Paxton’s? Does anyone know?
I appreciate it. Thanks

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post #2 of 8 (permalink) Old 07-29-2019
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I don't know, but I bet Brenspeed does


| 2010 GT coupe | Daily Driver with some Steeda and GT500 take-off stuff for the occasional track day
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post #3 of 8 (permalink) Old 07-29-2019 Thread Starter
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That is true. A bit of a silly question to ask here I guess when brenspeed knows that answer I am sure.
While on the subject, does anyone here have a centrifugal supercharger on their 3v? I haven’t had mine terribly long, and the numbers add up, but I’ve never had a supercharged v8 before. It feels remarkably different than I thought it would
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post #4 of 8 (permalink) Old 07-29-2019
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on the other hand, if you asked Brenspeed, then we wouldn't have anything to talk about here, LOL . . .

I know there are quite a few centrifugal supercharged 4.6 3V's running around out there, but I don't know how many of them frequent this forum.

| 2010 GT coupe | Daily Driver with some Steeda and GT500 take-off stuff for the occasional track day
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post #5 of 8 (permalink) Old 08-01-2019
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I suggest getting it dyno'ed before making any changes. Need to know what the starting point is.


130 total pounds of Pitbull ruled by 8 pounds of cat.
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post #6 of 8 (permalink) Old 08-08-2019
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I have a Paxton 1200sl (throwback from brenspeed) just recently had them install some Detroit rockers and 4.10 gears) waiting on the Barton short throw shifter to come in. But what a difference the gears made going for 3.31s (5spd Manual) to 4.10s. Also the cams opened it up as well and the exhaust is a little louder. I have an axel back and aftermarket H pipe and high flow cats. I think the next mod will be kooks headers.

As far as going to a smaller pulley you can but you would need a new tune and probably want to add an intercooler if you
Don’t have one already (assuming you have the 1200 not 2200).

I had mine dyno-ed back when the supercharger was installed and it was all stock but axle back (even stock mid pipe and cats) with 3.31 gears. It was a hot summer day and it put down 430ish if I renewer correctly. I’ll find the video and post it up. With the cams it should be around 450rwhp or so. Still on stock pulley (9-10Ibs peak)

Honestly plenty of power (mines a vert) and doesn’t take long at all to get up and going. I don’t race it or track it. Just a fun weekend cruiser. Next I will look at headers and probably intercooler and go to a smaller pulley. That’s about max you can go before getting into to much power / torque for the bottom end.
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post #7 of 8 (permalink) Old 08-08-2019
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Also going to the smaller pulley and adding the intercooler should net you around 30rwhp or so.
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post #8 of 8 (permalink) Old 08-21-2019
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Great information !!
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