LS carburetor intake using a stock DBW throttle body?, pls help
 

I have an idea and want to know if its possible to do. I want to get a LS carb intake with EFI bungs and mount a stock DBW 78mm throttle body off an 2004 5.3 intake on it. Can i mount the throttle body on it like a carb? I can fab up an adapter plate. I will probably run a speed density tune so I wont need a MAF. I can then fab up a mount to house a old school air cleaner on top of it to make it look somewhat period correct. With the DBW throttle body i can retain cruise control easily. I have hptuners and can adjust most settings to get this to work. Pls help me with inputs to get this working.

http://www.summitracing.com/parts/nal-88958675

Re: LS carburetor intake using a stock DBW throttle body?, pls help
 

There are off the shelf adapters for that purpose, but most of them have a 90 degree bend for hood clearance, like this one:

http://www.summitracing.com/parts/edl-3847/overview/

http://static.summitracing.com/globa...-3847_w_ml.jpg

Making a straight adapter should be petty easy, especially since you don't have to worry about throttle cables. You could probably just take a square of steel or aluminum plate and drill it with the appropriate bolt patterns.

Re: LS carburetor intake using a stock DBW throttle body?, pls help
 

Found this today. Mast motorsports has done it.

http://www.mastmotorsports.com/2010/...0System&id=487

Re: LS carburetor intake using a stock DBW throttle body?, pls help
 

wow that looks restrictive...like it needs a 102mm TB.

Re: LS carburetor intake using a stock DBW throttle body?, pls help
 

a 87mm throttle body flows around a 1000 cfm from what i read.

Re: LS carburetor intake using a stock DBW throttle body?, pls help
 

That's pretty slick. I like it.

Re: LS carburetor intake using a stock DBW throttle body?, pls help
 

Weird, my post disappeared. Few companies have done it, I like the idea but it also requires going with an SD tune.

Re: LS carburetor intake using a stock DBW throttle body?, pls help
 

Funny...that's the same reason I DO like it. :mm:

Re: LS carburetor intake using a stock DBW throttle body?, pls help
 

WOW! Can't believe this came up . I always wanted to do this but with dbc t.b. just never took the plunge.
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Re: LS carburetor intake using a stock DBW throttle body?, pls help
 

That looks cool as hell! But I would rather stay with a maf tune and not SD..

Re: LS carburetor intake using a stock DBW throttle body?, pls help
 

I know it's an old thread, but
did anyone find a cheap / easy / crafty way to mount a standard air cleaner on the 4" OD of an LS throttle body?
I'm trying to wrap my mind around the parts / pieces available and what it would take to put a stock TB on a Victor Jr. intake, then put an air cleaner on it... My junk already runs, mind you, I just want it to look like something.

Re: LS carburetor intake using a stock DBW throttle body?, pls help
 

I'm headed in that direction . I've mage my bottom adapter from aluminum. Haven't got to the air cleaner adapter yet but I have some ideas soon to come.
http://i803.photobucket.com/albums/y...020_203251.jpg

Re: LS carburetor intake using a stock DBW throttle body?, pls help
 

The part to adapt the 4-bolt DBW throttle onto the 4150 type flange is available on ebay.
Doesn't do me any good, using a Gen III 3-bolt throttle body, but the plate isn't too hard to make I don't think.

To get the carb type air intake onto the Gen III / Gen IV throttle body is a small trick.
The TB's are 4" O.D., most air cleaners are 5 1/8".
McMaster sells 1" long sections of 4" ID / 4 1/2" OD aluminum for under $10. If you have a lathe or a nearby and reasonable machinist, this could be turned on one side to 4 7/32" ID. Emery cloth the outside of the TB until this tube is a tight fit (but doable with a plastic hammer, say) and tap it on to the TB, leaving the lathe-turned side up & exposed 1/4 - 1/2".
Then you are just a $10 carb adapter away from running an old school intake on your LS.
I haven't measured how much meat is on the TB to see if it could be opened up for the carb adapter without the collar on it. I kind of doubt it; it would need almost 1/8" of metal to spare in the wall thickness.

The only other detail I can think of is needing some sort of support for the air cleaner stud. I guess you could cross-drill the collar & put a piece of bar across the diameter, that bar itself being drilled for the carb stud, but this is starting to sound ugly.

Re: LS carburetor intake using a stock DBW throttle body?, pls help
 

Maybe a few mm's if your lucky trying to bore it out. Thats why the aftermarket (i.e. Nick williams) TB's came alone. There aren't a ton of good options for the dbw 78mm TB without going to something like the xdrive (that thingy that lets u run the newer style dbw tb)

Re: LS carburetor intake using a stock DBW throttle body?, pls help
 

Got mine done but it'd dbc
Started with an aluminum Poston on the lathe
http://i803.photobucket.com/albums/y...3_163912-1.jpg
http://i803.photobucket.com/albums/y...2_202502-1.jpg
Done
http://i803.photobucket.com/albums/y...107_205929.jpg

Re: LS carburetor intake using a stock DBW throttle body?, pls help
 

Got mine done but it'd dbc
Started with an aluminum Poston on the lathe
http://i803.photobucket.com/albums/y...3_163912-1.jpg
http://i803.photobucket.com/albums/y...2_202502-1.jpg
Done
http://i803.photobucket.com/albums/y...107_205929.jpg

Re: LS carburetor intake using a stock DBW throttle body?, pls help
 

wow!! nice job!