Have heard of people running these and have also heard they may work?? I have always thought that they were a scam, anyone have any positive experiences with these?
Throttle body spacers??
- Thread starter cornicejumper
- Start date
In theory they are the same thing as doing a reed spacer on like a sled which works so I think they would work. Tell ya what buy one for an 03 chev silverado with the 5.3 send it to me and I'll give you a full report 
I put one on my 92 Chevy 1/2 ton 5.7 and all I noticed was a bad hesitation when I punched it after shifting. Another guy at work put one on a 01 Dodge and said he didn't notice chit either. I'd take the $100 and go buy some beer and nachos.
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IndoubtGASIT
Well-known member
^^^^X2 Sounds like a good plan! I put one on my 97 chevy and didn't do ****. maybe 2 horse. big deal
Thats kinda what i figured 100 bucks worth of bs guess ill have to put that 100 towards a chip
In the old days we used them on our carbed cars and they helped a lot but I don't see how they would help much on a throttle body.
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They can make a huge difference (good or bad depending on the setup) on a carbed vehicle because it actually makes a difference in the atomization and air/fuel delivery. I've seen 20 hp swings on the dyno with stock car motors. They can also benefit or hurt on a throttle body injection setup where the fuel is delivered in the TB like a carb.
On any setup where the injector lies further into the intake tract it isn't going to affect much if at all, because the fuel mixture is added after the spacer anyway.
This is why I get such a laugh out of the "turbo" or "tornado" type spacers as the air has already settled by the time the fuel is added and doesn't do squat for performance or economy.
On any EFI system that delivers the fuel in the Plenum or @ the port they are just an expensive paper weight.
On any setup where the injector lies further into the intake tract it isn't going to affect much if at all, because the fuel mixture is added after the spacer anyway.
This is why I get such a laugh out of the "turbo" or "tornado" type spacers as the air has already settled by the time the fuel is added and doesn't do squat for performance or economy.
On any EFI system that delivers the fuel in the Plenum or @ the port they are just an expensive paper weight.
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In theory they are the same thing as doing a reed spacer on like a sled which works so I think they would work. Tell ya what buy one for an 03 chev silverado with the 5.3 send it to me and I'll give you a full report
Not the same in theory as a reed spacer.
A reed spacer goes between the valve (reeds) and the intake tract allowing for a larger volume in the intake tract. (after the fuel mixture here too)
A TB spacer goes in before the Valves doing not much of anything if the fuel isn't present at that stage.
Same idea on a 2 stroke would be like putting a spacer between the reed cage and the carb or a longer carb boot.
