Throttle Body Spacers?
Wanted Induction mods:
SLP lid
SLP MAF
Ported throttle body
LS6 Intake
Thanks for your opinions,
Brad
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I've got a throttle body spacer with a helix/corkscrew design on the inside of it that I purchased for about $90 about 4 years ago and I noticed a nice low end pull right away after installation... The corkscrew design is meant to help atomize the air better... gain claims of up to 10+hp...
Now i'm not saying I got 10+ out of it, but I will say I absolutely noticed more low end pull after the install... I wouldn't be so quick to say certain parts on these cars don't help any as it seems that most members on here don't branch out to much and go with the first result they hear...
I don't want to start any flamining, or pissing contest out of this opinion of mine but I just wish that there were more results of proof that people have instead of just saying "so and so, heard that this guys, brothers, uncles, cousins car didn't get any gains from it..."
here's a picture of it....
Everyone is always worried about smoothing out the airflow, so this generally makes zero sense to those people I am sure. Maybe that money would be better spent for a port job on the stock TB? That is just my thoughts though....what do I know.
I've got a throttle body spacer with a helix/corkscrew design on the inside of it that I purchased for about $90 about 4 years ago and I noticed a nice low end pull right away after installation... The corkscrew design is meant to help atomize the air better... gain claims of up to 10+hp...
Now i'm not saying I got 10+ out of it, but I will say I absolutely noticed more low end pull after the install... I wouldn't be so quick to say certain parts on these cars don't help any as it seems that most members on here don't branch out to much and go with the first result they hear...
....uh...I don't know.
However you would be better off to mix into a carb than into fuel injection. Seems that Atomization would actually become beneficial in that case. Just not on the injected cars. People that know carburetors know what I am trying to get at I am sure.
Last edited by orangeapeel; Sep 8, 2007 at 07:12 AM.
If you just look in the intake (beyond the TB), it would become obvious that the "spiral flow" would never make it to each fuel nozzle (legitimizing the claimed atomizing effect). IF air AND fuel entered from a central location (as in carburated type intake manifolds), then it would be definitely a benefit. The whole purpose and design of direct port fuel nozzles is they atomize (break-up fuel into a mist = "spray") upon delivery. The finer the mist, the more efficient the burn.
If you just look in the intake (beyond the TB), it would become obvious that the "spiral flow" would never make it to each fuel nozzle (legitimizing the claimed atomizing effect). IF air AND fuel entered from a central location (as in carburated type intake manifolds), then it would be definitely a benefit. The whole purpose and design of direct port fuel nozzles is they atomize (break-up fuel into a mist = "spray") upon delivery. The finer the mist, the more efficient the burn.

Hopefully this thread will get folks to consider the theory and application on our intake/fuel nozzle set-up and put this spiral TB spacer thing to rest once and for all.
Myth Busters have a term for this .. "Busted"
Atomization has to occur after fuel is introduced into the intake airflow, so that really only works on applications where the spacer is behind the fuel introduction system, such as a carburetor or throttle body w/integrated sprayers. Since LS engines' injectors are not located there, the atomization claim is false. Now, if the helical cut on the spacer does create a change in airflow, and that change is a positive one, then don't worry about the atomization portion and just enjoy the results of a slight increase in HP.
Also, on Gen 1 SBC engines, a spacer can be used to move the torque curve around, which is critical when tuning for a particular track or application. I would be interested to see if anyone has performed any dyno tuning with the LS spacers to see if the same effect is realized.
They do NOT do anything for a LS-based engine. A spacer was tested on an '01 SS... it lost power on the dyno. That was the end of TB spacers for fuel injected vehicles with that company.
I see there's no point to me arguing here, as I'm well outnumbered
But what can I say, I told everyone I did feel an increase in low end power but have nothing in ink to back up my claim, so all I have to fall back on is my opinion, and whether or not you believe it is up to you. But just thought I'd throw it out there anyways as one of the very "few" that have this mod on their car...








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