4 pound lower 2.93 upper

ron

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Would a 4 pound lower pulley and a 2.93 upper be to much boost for a stock 2003 cobra motor 21000 miles. About how boost ,hp ,tq
 

Slow99x

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Enough to go into the 9's with a Posi Race Port if I remember correctly
 

kweb288

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And spray.
no there is a guy that did it without spray. WIth a ported blower, c4, solid, weigth reduciton and some other stuff
His name is badass03 or something like that over on modularfords.com
 

10thSVT_03

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I have a steggy stage 4 port and a 2.76 upper with 4lb lower and its a great combination. I made over 500hp/TQ with this combo.. Kurgan tuned with a JLT ram air intake.. Also recommend 60lb injectors. That is one thingI wish I would have done before the tune was the injectors..
 

FuelSlut

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Would a 4 pound lower pulley and a 2.93 upper be to much boost for a stock 2003 cobra motor 21000 miles. About how boost ,hp ,tq
Not at all. Boost is a number, it's all in your tune. These motors are mad to take 900 hp and proven they can take it. Get a street tune and a race tune and your set.
 

BADASS03SVT

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Enough to go into the 9's with a Posi Race Port if I remember correctly
I need to keep this quote for my other forums!


OP....Ive found the 2.93/4# to be the ideal setup for my eaton. Ive tried more boost and the car runs exactly the same. seems the boost IS up but the heat and belt slip is also.
 

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