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Old 01-21-2009, 09:17 PM   #1
smblknova
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Built a 406 sbc end of last season AFR 210 aluminum heads .100 dome pistons roller cam approx 575 H.P. question is it seem it wants to lay down about the 450 ft. It pulls good till then. 1.42 60 ft. 6.42 et @ 105 in th 1/8 currently have a Holly model 4150 @ 850cfm. Would a 1050 be benificial? or am I expecting too much?

Thanks guys and gals

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Old 01-21-2009, 10:07 PM   #2
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what you need is a 1000 cfm 4150 carb....
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Old 01-21-2009, 11:34 PM   #3
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Originally Posted by fast406malibu View Post
what you need is a 1000 cfm 4150 carb....
x2 Preferably one built by APD!
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Old 01-21-2009, 11:47 PM   #4
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Smile Carb question

Call Chuck Nuytten,tell him what you got,combination you have,what you are going to want to do with it.972-722-8333
www.chucknuytten.com
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Old 01-21-2009, 11:58 PM   #5
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Maybe get a 950 and try it,my 383 has a flat tappet cam,dart 215 iron eagle platinums,13.5-1 comp.,with a super victor, made 592 hp. on alky and thats the carb i have.

Id call APD if i needed another carb they seem to be really knowledgeable and could help you out.
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Old 01-22-2009, 07:44 AM   #6
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950... go here www.apdracing.com call them, any of them guys will be able to give you the info you need and help you out with a carb
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Old 01-22-2009, 01:03 PM   #7
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Contact Patrick at ProSystems: http://www.prosystemsracing.com/index1.html

He is great to deal with and ships within days.
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Old 01-22-2009, 01:14 PM   #8
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Contact Patrick at ProSystems: http://www.prosystemsracing.com/index1.html

He is great to deal with and ships within days.

X2
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Old 01-23-2009, 08:30 AM   #9
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either an 850 or 950 from quick fuel
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Old 01-23-2009, 01:20 PM   #10
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What have you done to try to remedy the problem at this point? Have you jetted it up a bit more? How do the plugs look after a pass?

I'm assuming you basically have a 750 carb with an 850 baseplate which is what I have with a similarly powered SBF.
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Old 01-23-2009, 08:18 PM   #11
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What have you done to try to remedy the problem at this point? Have you jetted it up a bit more? How do the plugs look after a pass?

I'm assuming you basically have a 750 carb with an 850 baseplate which is what I have with a similarly powered SBF.


X2

Can't believe that it was nine posts in before someone wasn't wanting to sell you a carb or recommend a builder.


Like White90GT said, we need to know some things here first. That 850 will provide most if not all of your needs.

If it is laying over, typically that's a symptom of running out of fuel. What fuel pump are you running ?
If electric, is it getting the proper voltage ?
What is the fuel press going down track ?

What size fuel line from tank to carb - everything:
tank to pump, pump to regulator, regulator to carb ?
Is the filter clean / new ?

Jetting ?

Timing / ignition ?
Any popping when the engine lays over ?
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Old 01-23-2009, 08:45 PM   #12
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I would first get a wideband 02, then tune the carb you have... it will save you hundreds of $$$$...
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Old 01-23-2009, 09:11 PM   #13
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cfm all the way hands down dale cubic
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Old 01-23-2009, 11:09 PM   #14
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I think it is in your fuel delivery,i would check that first.
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Old 01-23-2009, 11:18 PM   #15
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Quote:
Originally Posted by smblknova View Post
Built a 406 sbc end of last season AFR 210 aluminum heads .100 dome pistons roller cam approx 575 H.P. question is it seem it wants to lay down about the 450 ft. It pulls good till then. 1.42 60 ft. 6.42 et @ 105 in th 1/8 currently have a Holly model 4150 @ 850cfm. Would a 1050 be benificial? or am I expecting too much?

Thanks guys and gals

awsome site here
Do you have jet extentions? do you have enough fuel pressure going down track?

APD stuff is bad ass but if you can fix the problem without buying a new carb........
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