??? question on the vortech A-trim

[joey50gt]

Ok i will go with the vortech A-trim but i want to up grade the pully for a little more bost do any of you guys know of a place that i can buy a pully for the A-trim?Oh and how much boost can i up grade to? Is there a pully that can spin 9lb's out of the A-trim?
Thanks for any help on this question ahead of time.

[joey50gt]

Not even one answer on the pully question.
Please guys help out if you can.

Look in Muscle Mustangs & Fast Fords,there are many places that sell different sized pulleys for Vortechs to get 9-10lbs of boost.

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Paxton Blown 87GT
ICQ:91504337

[smokedchevy]

Excessive motor sports has 8-11psi A-trim for $2195. I've never ordered from them, so I don't know of their customer service qualities. You might want to call them
1-800-930-9585.
www.ExcessiveMotorsports.com

[Rick 91GT]

Originally posted by smokedchevy:
Excessive motor sports has 8-11psi A-trim for $2195. I've never ordered from them, so I don't know of their customer service qualities. You might want to call them
1-800-930-9585.
www.ExcessiveMotorsports.com

AAAAARRGGHHH STAY AWAY FROM THOSE ***HOLES The problem with adding the smaller blower pulley is you will overspin the blower which puts added stress on the bearings and shaft(The A-trim doesn't have the better bearings like the S-Trim and higher models), that is less effective. The A-Trim blower really should spin no more then 45,000rpm blower impeller speed, it really isn't efficient after 40,0000rpm blower impeller speed. Check out Vortech's site they have a nice calculator to figure out the impeller speed http://www.vortechsuperchargers.com/...speedv-1.html. On a stock type motor you may see more then 6psi due to all the restriction.. Voretch offers the pullies but if you want to save some money order the blower and pullies through Dave at JD's Performance www.jdsperformance.com he just gave my friend a really good deal on the A-Trim and we just bought some pullies for my dads Vortech as well, way lower the anyone else, Tell him I sent you.

If you use a 7" crank pulley and the supplied 3.33 blower pulley at 5600 motor rpm,you will be spinning the blower 40612.61 rpm which is about the max you can go safely, but many guys run smaller blower pullies and get more boost but it may wear fast.

Hope That Helps,

Rick


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[This message has been edited by Rick 91GT (edited 06-28-2001).]

[This message has been edited by Rick 91GT (edited 06-28-2001).]

[89 Cobra LX]

Excessive Motorsports blows.

You have been warned.

[smokedchevy]

Sorry guys. I knew one of those companys sucked but I couldn't remember which one it was. I guess it was that one.

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92 GT, 4:10 gears, centerforce clutch, 6# powerdyne blower, bbk h-pipe, flowmasters