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Blow through carb?

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Old Oct 24, 2007 | 11:05 AM
  #1  
4playta's Avatar
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Joined: Nov 2006
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Car: 1984 Trans Am
Engine: Built chevy 350
Transmission: TCI Built 700r4
Axle/Gears: 3.73 posi 10 bolt
Blow through carb?

I can get a good deal on a used procharger right now, the guy has everything but he said I will need a new carb and my holley 750 vs will not work. I can see why it would not work but why would a 750 DP not work? I am running a 350 with 10.5 to 1 compression, AFR 195 heads, Edelbrock performer RPM manifold, Comp cam 280H and a holley 750 VS right now. I am running a TCI Transmission with a 2500 stall converter and 373:1 gears out back. I am thinking of running mild boost around 6 to 8 psi...would I need to change anything? Like compression ratio? What would be a good carb for this combo with the blower?
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Old Oct 24, 2007 | 11:55 AM
  #2  
xpndbl3's Avatar
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From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: Blow through carb?

you have to do blow thru mods on it. www.theturboforums.com read for a long time, you'll figure it out.
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Old Oct 24, 2007 | 01:13 PM
  #3  
Sonix's Avatar
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From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Re: Blow through carb?

Yea, you'd need to change your compression ratio. I'd recommend soup dish forged pistons. Bathtubs.

That cam isn't ideal for a blower either. I'd go with a nice wide split pattern, long LSA as well.
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Old Oct 24, 2007 | 01:44 PM
  #4  
4playta's Avatar
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Senior Member
 
Joined: Nov 2006
Posts: 455
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Car: 1984 Trans Am
Engine: Built chevy 350
Transmission: TCI Built 700r4
Axle/Gears: 3.73 posi 10 bolt
Re: Blow through carb?

Originally Posted by xpndbl3
you have to do blow thru mods on it. www.theturboforums.com read for a long time, you'll figure it out.
Whoa I did alot of reading and I think I will just stick with what I have...lol! I learned that your car will run real rich when at idle because there is no boost...there is remedies for this but thats alot of things I dont want to get into! And yes I was think of my compression as well as my cam...according to prochargers site I could run 5 to 6 psi with 10 to 1 and be safe with an intercooler but I am still looking at alot of changes! I think someday I will drop this motor in wifes camaro and get a LS1 6 speed for my car and supercharge that...bigger injectors and the computer controls everything so I wont have to worry about running rich or lean.
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