what pulley for 9psi on a p1 procharger
02-25-2008, 08:36 PM
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3.70" at basically sea level on stock motor with headers and magnaflow cat back made 5.1. I upped to 3.40" in search of 6.5-7. A 4.10 made 3psi with manifolds and a cut out....
02-25-2008, 10:37 PM
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find out what pulley you have now before you order anything! Pulley & belt isnt cheap and if you have someone else doing the install you will just waste $ if you get the wrong size pulley.
3.2 pulley on a stock setup is good for about 8lbs
3.0 pulley on a stock setup should be around 10lbs but might run into belt slip issues.
3.2 pulley on a stock setup is good for about 8lbs
3.0 pulley on a stock setup should be around 10lbs but might run into belt slip issues.
02-26-2008, 04:47 AM
#7
find out what pulley you have now before you order anything! Pulley & belt isnt cheap and if you have someone else doing the install you will just waste $ if you get the wrong size pulley.
3.2 pulley on a stock setup is good for about 8lbs
3.0 pulley on a stock setup should be around 10lbs but might run into belt slip issues.
3.2 pulley on a stock setup is good for about 8lbs
3.0 pulley on a stock setup should be around 10lbs but might run into belt slip issues.
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02-26-2008, 10:36 AM
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That sounds way too small to me. With the old 6 rib D-1SC system, I made 7 lbs of boost with the 7.00" crank pulley and a 4.00" blower pulley. If you have a faulty by pass valve it can take a lot smaller of a pulley to make boost. We replaced a brand new Pro Flow bypass valve with another new one and picked up two pounds of boost several years ago when the boost we were seeing just didn't seem right on a V6 Mustang. Bob
My setup with a 3.2 pulley only makes around 5lbs. We are putting a 3.0 on there now along with a 4200 torque converter. See what happens.
02-26-2008, 10:40 AM
#10
I personally would think that it also will have to do with your setup. I am pulley'd for as much boost as possible with my D1SC, but others have achieved more boost as they have different setup (example., different cam, restrictive vs non-restrictive heads, and intake combo).
Basically what I am saying is you should go with One Bad Z's advice and see what pulley you have first, and what boost you are currently seeing. Then figure out how much of a smaller pulley you'll need.
Some times extra boost is as easy and freeing up restrictions. By changing to a larger air filter, and different larger inlet tube to the blower, I picked up 6#'s of boost without doing anything else.
Basically what I am saying is you should go with One Bad Z's advice and see what pulley you have first, and what boost you are currently seeing. Then figure out how much of a smaller pulley you'll need.
Some times extra boost is as easy and freeing up restrictions. By changing to a larger air filter, and different larger inlet tube to the blower, I picked up 6#'s of boost without doing anything else.
05-07-2008, 08:47 AM
#13
That sounds way too small to me. With the old 6 rib D-1SC system, I made 7 lbs of boost with the 7.00" crank pulley and a 4.00" blower pulley. If you have a faulty by pass valve it can take a lot smaller of a pulley to make boost. We replaced a brand new Pro Flow bypass valve with another new one and picked up two pounds of boost several years ago when the boost we were seeing just didn't seem right on a V6 Mustang. Bob
