Throttle Body Spacers...Fact or Fiction?
05-28-2002, 11:35 PM
#4
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Car: 2002 Z28
Engine: LS1
Transmission: 4L60E
Axle/Gears: 3.23
wait until you have alot of mods before doing the small things, especially when the small things cost around 50 bucks.
05-29-2002, 04:04 AM
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Car: 1991 Firebird
Engine: 383 stroker
Transmission: T-56
no...i felt absolutely no difference
Tom
05-29-2002, 10:11 PM
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Car: 91 Red Sled
Axle/Gears: 10bolt Richmond 3.73 Torsen
A spacer = more plenum volume (more air/fuel for engine to draw from) and in most cases is a good idea. It all comes down to what your engine needs. A large plenum on a small engine will require less throttle body size than if the engine had a small plenum. It's much more complicated than that but if anything, MAKE the spacer yourself. Save the $$ for something more drastic. A high temp plastic is usually the best spacers because they don't absorb heat like metal (ever heard of a plastic heat sink 
) and they are the easiest to machine. Just make sure to test the plastic with gasoline before installing it on the motor.
) and they are the easiest to machine. Just make sure to test the plastic with gasoline before installing it on the motor. Trending Topics
05-30-2002, 07:06 AM
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I had to put one on my rebuilt engine so that the non drop air cleaner would clear the coil and the map sensor.. I don't know if it made a difference since I had never had a chance to try without..
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