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Need some help Procharger

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Old Sep 1, 2011 | 01:23 PM
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Default Need some help Procharger
I was checking my fan connection because it's not turning on causing my car to overheat. Noticed I need to replace my belt. Was looking and really didn't see a way to change the belt without taking out the procharger. I am a newbie and I have a f1a
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Old Sep 1, 2011 | 01:51 PM
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Originally Posted by 4kiro
I was checking my fan connection because it's not turning on causing my car to overheat. Noticed I need to replace my belt. Was looking and really didn't see a way to change the belt without taking out the procharger. I am a newbie and I have a f1a
Yes, you unbolt the blower to replace the belt on a 98-02 F Body. Shoot me an e-mail to brutespeed@gmail.com and I'll send you a copy of the ProCharger installation instructions. Bob
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Old Sep 1, 2011 | 01:57 PM
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Ok I will. One more question, how much psi should I see if I have on a 5.25 pulley. Currently seeing about 6. What if I replace it with a 4.75 pulley.
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Old Sep 1, 2011 | 02:01 PM
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Originally Posted by 4kiro
Ok I will. One more question, how much psi should I see if I have on a 5.25 pulley. Currently seeing about 6. What if I replace it with a 4.75 pulley.
How much boost the blower can produce depends on many variables.
* Cubic inch. The larger the engine the less boost it will make with a supercharger.
* Headers and exhaust. A better flowing system will produce less boost, requires a smaller pulley to regain the loss in boost. Ultimately though, more power will be gained.
* Camshaft and heads. A camshaft with some overlap will leak out some boost through the valves. Better flowing heads react a lot like a better flowing exhaust system.
* Altitude. Elevation plays a big part in how much boost is produced. Those people living in the higher elevations have to spin the blower harder to see boost.
* Condition of engine. An engine with real good sealing rings will ultimately produce more boost than one with worn rings.
* Rpm. An engine that is spun up higher in the rpm range will normally produce more boost.

If you have a stock bottom end (not forged) I'd leave the 5.25 pulley on for now and get the blower belt tight (as tight as a guitar string) and make sure the air filter is clean. A dirty filter restricts boost. Now see how much boost you're making before you go and swap pulleys. If you're still at 6 psi then I'd drop down to a 5.00 pulley. Bob
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Old Sep 1, 2011 | 02:22 PM
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Kool my engine is stock, it's got stainless steel headers 1 7/8 with three inch exhaust no cats. Just bought some 317 heads that I am going to be porting and plan on youre blower cam with 100 percent meth. My car dynoed at 509 at the wheels.
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Old Sep 1, 2011 | 07:37 PM
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Bob how long does the belt need to be, you told me once but I forgot. If you have a part number it would greatly be appreciated.
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Old Sep 1, 2011 | 07:40 PM
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Originally Posted by 4kiro
Bob how long does the belt need to be, you told me once but I forgot. If you have a part number it would greatly be appreciated.
For your current 5.25 pulley the belt needs to be 42.70" long. Bob

LS1 F-BODY 8 RIB BELT / PULLEY MATRIX

Matrix for 7.65" crank pulley DC017A-008

ATI Dampner #918853

CRANK PULLEY BLOWER PULLEY BELT

DC017A-008 DP340I-08D DB392I-008

DC017A-008 DP355I-08D DB392I-008

DC017A-008 DP370I-08D DB400I-008

DC017A-008 DP385I-08D DB400I-008

DC017A-008 DP390I-08D DB400I-008

DC017A-008 DP400I-08D DB400I-008

DC017A-008 DP413I-08D DB408I-008

DC017A-008 DP425I-08D DB408I-008

DC017A-008 DP438I-08D DB415I-008

DC017A-008 DP450I-08D DB415I-008

DC017A-008 DP463I-08D DB415I-008

DC017A-008 DP475I-08D DB415I-008

DC017A-008 DP500I-08D DB415I-008

DC017A-008 DP525I-08D DB427I-008


For your current 5.25 pulley the belt needs to be 42.70" long. Bob
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Old Sep 1, 2011 | 07:42 PM
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Originally Posted by 4kiro
Kool my engine is stock, it's got stainless steel headers 1 7/8 with three inch exhaust no cats. Just bought some 317 heads that I am going to be porting and plan on youre blower cam with 100 percent meth. My car dynoed at 509 at the wheels.
You're going to make some good power with that combination. Make sure you use 100% methanol, as the water in a 50/50 mix tends to put the flame out under boost. Bob
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Old Sep 1, 2011 | 09:04 PM
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Bob you are the man. Can't say it enough.
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Old Sep 2, 2011 | 02:24 AM
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Originally Posted by 4kiro
Bob you are the man. Can't say it enough.
You're welcome, thanks! Bob
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