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hoow much boost should i run with this combo

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Old 09-18-2007, 11:18 PM
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Default hoow much boost should i run with this combo

this is in a 6speed street car with 9 inch 4.11s
347
98 block
arp main studs
stock crank
eagle h beam rods
arp rod bolts
wisco dished forged pistons -25
fm7 228 230 595 or so specs
gm ctsv racing lifters
cosmetic head gaskets
gtp stage 2 heads not sure of ccs
ls6 intake
ported throttle body
42lbs injectors
a1000
8an feed line from tank
maybe around a 6 an for return
fuel rails
and boost refrence fuel pressure regulater

heads are slightly milled pretty much just resufaced
i am guessing my compresstion is in the 8.5 to maybe 8.9 range(not sure what cc my heads are)

i am looking to run a d1 with front mount intercooler
have a vortech v9 gtrim but dont think it will be enough to feed the engine now
no meth no nos

What do you think would be the max boost i can run on this?

and what would be a safe amount of boost to run on the street but still have nuts? and be a good daily driver if needed?

and does procharger make a cog set up for our cars?

thanks for looking
any help would be great
Old 09-18-2007, 11:43 PM
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You will need 60s for injectors, then you could get 16 or more lbs of boost out of it. You will also need to bring your gearing up to about stock range or you will have traction problems. A 16 lb procharged car is plenty streetable as long as you don't stomp on it because it has to be revved up to get into boost. Boost rises linearly with rpm. So if someone is driving the car that is not so experienced with performance driving ECT, they can drive the car like a normal car as long as the cam and clutch are not too extreme. No big surprises as long as they don't put it to the floor and hold it for a second. I let my wife drive my car all the time.

Last edited by BOONE; 09-19-2007 at 12:11 AM.
Old 09-19-2007, 04:53 AM
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Take a look at this 346 C5 Corvette that is making 740 rwhp with an ATI ProCharger D-1SC. http://www.exoticperformanceplus.com...Car.php?car=40 Bob
Old 09-19-2007, 02:07 PM
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My 60# injectors are pushing their limits at 15psi on my 5.3L. (11.4:1afr)
Id get some injectors and run 20#.
Old 09-19-2007, 02:14 PM
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I say 14-15 psi and as others have mentioned you will def need at least 60 LB injectors. Sounds like you have a great foundation though for FI!
Old 09-19-2007, 03:40 PM
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60# injector's are fine for his combo! He can make more power than the d-1 will handle with those injector's. I would go to -10 fuel feed line.Also I hear the A1000 fuel pump get's hot when under normal driving condition's ,or for a long driving period and they go out.Save a little money and use a new set of GM lifter's,they work great.
Old 09-19-2007, 04:47 PM
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thanks for the help

i already have the 1/2 alum fuel line ran with 8an fittings and i have a 10 an feeding the pump
i welded in a 10an bung in the gas tank and its all in the car already

the motor is all togeither and ready to go in
is there a certain way to breack in a motor with boost ?

my 42 will be for sale soon and looking for some 60s

do you think i will be able to get a way with the 1/2 / 8an line
with about 12 to 15lbs of boost?

and also i am going to run the control box for the 1000 and heavy gauge wire all the way to the pump

what do you guys think?
Old 09-19-2007, 06:41 PM
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The 4.11s have to go unless you race the 1/8th
Old 09-19-2007, 07:36 PM
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Sounds like its got the potential, I'd say CR is good, you'll need 60# injectors atleast but should do fine with the D1 making a good solid 15-16psi. I think for the current setup your -8 feed line should work with a -6 return. I agree 4.11's should go for the street, you'll be spin city Get some 3.50's and haul ***. The D-1 will make more than enough for your setup. Good Luck and have fun slaying them stangs!
Old 09-20-2007, 05:54 AM
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Agreed with the above about removing the 4.11's. I personally would go with the 3.42,but I have also had the 3.73 wich worked real well also.Sound's like you are on the right path.
Old 09-20-2007, 11:51 AM
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Why build that killer shortblock and only run 15#? My bone stock shortblock has been running all summer @ 15#. Go 20# and have some fun., you shouldnt have a prob.
Old 09-20-2007, 01:34 PM
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I think you could run 15psi, and hit 650-725rwhp depending on everything else. I'm running a similar setup and my motor has seen 18-26 psi and it's still alive.
Old 09-20-2007, 03:16 PM
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will the 8an feed 6an line with 60lbs injectors support 18 to 20 ?

some things i left out is
i will be running pump 93 in st.louis Mo it gets hot and humid in the summer
will be on drs all the time once i shread my perfectly new street tires shouldnt take to long

also what gear are you guy trapping in
with a t56 and 350s?
or 370s?

i think i mit do 15 on the street then next track season either up the fuel and or do a meth kit and shoot for 20lbs for a track set up on slicks

also is brecking in a boosted motor the same as na ?
anything that should be done diffrent or what did you guys do?


thanks again for the post
pickin up a lot of good info, rather do this than blow it up then ask questions later
Old 09-20-2007, 09:58 PM
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Originally Posted by Crittpen
will the 8an feed 6an line with 60lbs injectors support 18 to 20 ?

some things i left out is
i will be running pump 93 in st.louis Mo it gets hot and humid in the summer
will be on drs all the time once i shread my perfectly new street tires shouldnt take to long

also what gear are you guy trapping in
with a t56 and 350s?
or 370s?

i think i mit do 15 on the street then next track season either up the fuel and or do a meth kit and shoot for 20lbs for a track set up on slicks

also is brecking in a boosted motor the same as na ?
anything that should be done diffrent or what did you guys do?


thanks again for the post
pickin up a lot of good info, rather do this than blow it up then ask questions later

I would do a -10 fuel supply line and use your factory supply line as the return line. I have 60# mototron's on my twin turbo car and I am at 18psi. The boost pressure really dosn't matter as much as the HP you will be making when it come's to the injector's.If you have a 6 speed I would go with the 3.42 gear's also and 3.73 with the auto.IMOA. Hope this help's more.
Old 09-20-2007, 11:37 PM
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Bump for what sounds like the proper path to a good build! And +1 on 60# injectors instead of 42#'s.
Old 09-20-2007, 11:54 PM
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sorry i betting you guys to death with questions

hey hunter do i need to feed the pump with 12an to keep up with the 10an line all the way to the front

I got ten coming out of the bottom of the tank and ran threw a 40 micron to the pump out threw a 100 micron every thing is right under the tank, I kind of sunk it up in my well in the back just a little
they all three are in a straight line here is a break down

(up to tank 10an)- 40F - pump - 100F - (8an hard line to front)

thanks again for the input if this is to confusing i will try to get a pic
Old 09-21-2007, 12:58 AM
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Personally I wouldn't run 15# on pump regularly without a little meth.
Old 09-21-2007, 02:41 AM
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Originally Posted by Exotic Performance Plus
Take a look at this 346 C5 Corvette that is making 740 rwhp with an ATI ProCharger D-1SC. http://www.exoticperformanceplus.com...Car.php?car=40 Bob

turned out killer-
Old 09-21-2007, 05:08 PM
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Originally Posted by Crittpen
sorry i betting you guys to death with questions

hey hunter do i need to feed the pump with 12an to keep up with the 10an line all the way to the front

I got ten coming out of the bottom of the tank and ran threw a 40 micron to the pump out threw a 100 micron every thing is right under the tank, I kind of sunk it up in my well in the back just a little
they all three are in a straight line here is a break down

(up to tank 10an)- 40F - pump - 100F - (8an hard line to front)

thanks again for the input if this is to confusing i will try to get a pic

Here is what I did. Everybody do's this a little different, but here is the way we did it! We put a 90 degree fitting in the top of the tank and connected a -10 line going to it into the tank. Then a -10 line connect's to the fitting on the other end and go's to another fitting that connect's to the 2 fuel pump's. Then a -10 from the pump's up to the fuel rail's on the motor. For the return we used the FACTORY fuel supply line as the return line as it already go's into the tank. Hope this help's a little. Here is a pic of the fuel pump's fitted together.
Attached Thumbnails hoow much boost should i run with this combo-finished-turbo-kit-photo-s011.jpg  
Old 09-21-2007, 07:55 PM
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Originally Posted by HUNTER02SS
Here is what I did. Everybody do's this a little different, but here is the way we did it! We put a 90 degree fitting in the top of the tank and connected a -10 line going to it into the tank. Then a -10 line connect's to the fitting on the other end and go's to another fitting that connect's to the 2 fuel pump's. Then a -10 from the pump's up to the fuel rail's on the motor. For the return we used the FACTORY fuel supply line as the return line as it already go's into the tank. Hope this help's a little. Here is a pic of the fuel pump's fitted together.

nice-what pumps are they -are they bosch 044? if so how much hp will two of those support?

thankyou-


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