how much boost can you run on a D1?
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how much boost can you run on a D1? Ok heres the deal guys i'm using a 15# pulley currently and its def not enough 
I went on the Procharger site and it says in the chart that the d1 can run 30+ #s i call bs on that my pulley on the blower looks pretty small right now i dont see the D1 being efficent with no more then 20#. Does anyone know where i can get diffrent pulleys from besides procharger ?and if i can remove the pulley with the blower bolted in the car?. I know i would at least have to remove the fan shroud but is the pulley puller small enough to fit between the radiator and the blower itself? Oh btw i'm seeing about 13#s at 6k with twin intercoolers i guess thats normal? 
There seem to be no belt slip of any kind(took me forever to line up that 12 rib belt 
) but i think i finally got it straight
thanks
I went on the Procharger site and it says in the chart that the d1 can run 30+ #s i call bs on that my pulley on the blower looks pretty small right now i dont see the D1 being efficent with no more then 20#. Does anyone know where i can get diffrent pulleys from besides procharger ?and if i can remove the pulley with the blower bolted in the car?. I know i would at least have to remove the fan shroud but is the pulley puller small enough to fit between the radiator and the blower itself? Oh btw i'm seeing about 13#s at 6k with twin intercoolers i guess thats normal? There seem to be no belt slip of any kind(took me forever to line up that 12 rib belt ) but i think i finally got it straightthanks
On The Tree
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From: Northern Virginia
Holly crap,
Those are some nice numbers, are you doing the tunning your self if not who in the area do you have helping. Sorry cant help with any question Im not running but 10# and have a Pontiac, Good luck and have fun.
Those are some nice numbers, are you doing the tunning your self if not who in the area do you have helping. Sorry cant help with any question Im not running but 10# and have a Pontiac, Good luck and have fun.
I think 30 PSI is unrealistic with a 383. 20 PSI should be achievable without a problem, especially with 12 RIB belt. Oh, yea the Twin IC's have to go. You won't see much more than 15 PSI with those and the pressure between the SC and the IC's will be unbearable and inefficient. Get a big FMIC or better yet you probably need to run a Ice to Air IC (if this is a race car) to get big numbers safely.
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Originally Posted by 1FASTLS
Holly crap,
Those are some nice numbers, are you doing the tunning your self if not who in the area do you have helping. Sorry cant help with any question Im not running but 10# and have a Pontiac, Good luck and have fun.
Those are some nice numbers, are you doing the tunning your self if not who in the area do you have helping. Sorry cant help with any question Im not running but 10# and have a Pontiac, Good luck and have fun.
now i'm only seeing nothing but 13. Thread Starter
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Originally Posted by BlwnTA
I think 30 PSI is unrealistic with a 383. 20 PSI should be achievable without a problem, especially with 12 RIB belt. Oh, yea the Twin IC's have to go. You won't see much more than 15 PSI with those and the pressure between the SC and the IC's will be unbearable and inefficient. Get a big FMIC or better yet you probably need to run a Ice to Air IC (if this is a race car) to get big numbers safely.
Andre, he has a good point about the intercoolers they are supposedly not all that effecient but Ive had pretty good results with them sub 600rwhp. ATI cores might not be as good as some others cores, but I dont know specifics. I have seen a couple people say they had a measurable amount of pressure drop across them though
1FASTLS, boost is fun once you get it tuned your right. I put together a setup for a guy right around you, ATI D1SC at 8 psi, and mild cam, stock heads 550 rwhp after tuning it at Heffners dyno. Sounds like your building a stout setup too!
1FASTLS, boost is fun once you get it tuned your right. I put together a setup for a guy right around you, ATI D1SC at 8 psi, and mild cam, stock heads 550 rwhp after tuning it at Heffners dyno. Sounds like your building a stout setup too!
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From: Germantown, MD
Originally Posted by GrannySShifting
Andre, he has a good point about the intercoolers they are supposedly not all that effecient but Ive had pretty good results with them sub 600rwhp. ATI cores might not be as good as some others cores, but I dont know specifics. I have seen a couple people say they had a measurable amount of pressure drop across them though
1FASTLS, boost is fun once you get it tuned your right. I put together a setup for a guy right around you, ATI D1SC at 8 psi, and mild cam, stock heads 550 rwhp after tuning it at Heffners dyno. Sounds like your building a stout setup too!
1FASTLS, boost is fun once you get it tuned your right. I put together a setup for a guy right around you, ATI D1SC at 8 psi, and mild cam, stock heads 550 rwhp after tuning it at Heffners dyno. Sounds like your building a stout setup too!
oh dont forget to find out for me about that 20# pulley focker
Last edited by LittleRedZ; Mar 19, 2005 at 03:57 PM.
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The way ATI rates there pullies as # pullies is bogus....... for us to even compare or know how much is left in your head unit we need to know.
1. How high are you spinning the motor to?
2. What size is your crank pulley?
3. How big is your blower pulley?
With that we can figure out how fast your spinning the blower and how close you are to maxing it out.
Kyle
1. How high are you spinning the motor to?
2. What size is your crank pulley?
3. How big is your blower pulley?
With that we can figure out how fast your spinning the blower and how close you are to maxing it out.
Kyle
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Originally Posted by NA$TY-TA
The way ATI rates there pullies as # pullies is bogus....... for us to even compare or know how much is left in your head unit we need to know.
1. How high are you spinning the motor to?
2. What size is your crank pulley?
3. How big is your blower pulley?
With that we can figure out how fast your spinning the blower and how close you are to maxing it out.
Kyle
1. How high are you spinning the motor to?
2. What size is your crank pulley?
3. How big is your blower pulley?
With that we can figure out how fast your spinning the blower and how close you are to maxing it out.
Kyle
I believe my Crank Pulley is 7.750 and I know my SC pulley is a 3.4 8-rib.
Originally Posted by BlwnTA
Good point Kyle, Also I will be tuning my 408 within a couple weeks. I'm shooting for 15 PSI on my D1SC (Pure Street/Show car), we'll see if it gets there and what kinda numbers it pulls. Stay tuned I will start a thread.
I believe my Crank Pulley is 7.750 and I know my SC pulley is a 3.4 8-rib.
I believe my Crank Pulley is 7.750 and I know my SC pulley is a 3.4 8-rib.
Kyle
Originally Posted by NA$TY-TA
How high ya plan on spinning the motor to Mark???? 6600?? 7K ha ha
Kyle
Kyle
Originally Posted by NA$TY-TA
The way ATI rates there pullies as # pullies is bogus....... for us to even compare or know how much is left in your head unit we need to know.
1. How high are you spinning the motor to?
2. What size is your crank pulley?
3. How big is your blower pulley?
With that we can figure out how fast your spinning the blower and how close you are to maxing it out.
Kyle
1. How high are you spinning the motor to?
2. What size is your crank pulley?
3. How big is your blower pulley?
With that we can figure out how fast your spinning the blower and how close you are to maxing it out.
Kyle
Last edited by Bryan Wilkinson; Mar 20, 2005 at 08:46 AM. Reason: change
Teching In
Joined: Mar 2005
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From: over there
about getting you pulley off just use a small propain torch to heat it up then stick a screw driver behind it, it should walk right off the input shaft. just watch out you dont hit the seal, the heat wont hurt anything
Originally Posted by NA$TY-TA
How high ya plan on spinning the motor to Mark???? 6600?? 7K ha ha
Kyle
Kyle
We will see how much boost ya make mark.... you will be close to maxing out the D1.... 62K RPM max and you will be at 61,680 @6600 rpm.
Kyle
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From: Germantown, MD
Originally Posted by Got Me SOM
what kind of numbers are you turning at the track? sweet car man, i'd like to build a nasty lt1 just to play around with.
today it went 11:50@124mph 2.0 60ft sorry i got a 10 bolt still with auto gears 3.23s on a 6speed car
1/8 was 7.1@98mph i'm going to try what the car dynos without the orange dryer hose also i need a msd box since i dont have one i think we are blowing the spark out.
i'm going to call ati tomorow to find out what my pulley size is. I"m spinning the motor to 6200 right now, i have 1 3/4 hooker lts with a 4" yipe mufflex 4" exhaust with a bullit muffler and a dump. so my exhaust side is fine my heads flowed 278intake/238 exhaust 81% intake/exhaust ratio so i'm pushing the air out fast but i dont think i'm pushing enough of it in and defanatly aint pushing it fast with 3.23s and a 6speed
i'll keep you guys posted , i'll try to put a msd box next week/ smaller pulley, and pull the orange dryer hose off and take it back to the dyno.
Good luck, I went 11.02@123mph with a 98 1/8th (1.50) when I was a heavy 3600 lb 422ci iron block setup.
15 psi + 383ci + good gas = low 10's I would think.
I went 10.3@136 with belt slippage, it was about 14 psi.
15 psi + 383ci + good gas = low 10's I would think.
I went 10.3@136 with belt slippage, it was about 14 psi.
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From: Germantown, MD
ok i got the specs on the pulleys 7.65 crank/3.7 blower. Just ordered a 3.4. Car is shifted at around 6200rpm. I will dyno with the new pulley and no s/c intake hose this time and see what happens. i know the orange dryer hose that makes a u turn on lt1s is defanatly ristricting my flow to the motor and wont let the s/c suck efficently.