Back to the trottle body spacers. Don't waste your money. GM spent millions designing it into your engine, its called Vortec. All 4.3L engines are vortec's.

 

throttle body spacers only add up to like 10 hp for tbi motors but i have a cpi and i cant find one do they make one for cpi 4.3L or not? does anyone know?

 

Nope, save your $.

 

i put a tbs on my 92 350 tpi fullsize and i noticed a big difference but all i ahve heard is to stay away from tbs on these cause they dont even mix the fuel up there... and the spiral is then useless cause it supposed to create a better mixture of fuel and air.. and if only air is being pulled through it it makes it completely useless

 

One of our fearless mods summed it up earlier this month. (swartkk)

[sm=burnout.gif]

 

yeah what he said

 

Does it give you better gas mileage? That's all I am wondering. I want to get the K&N FIPK by the end of next month and always see Throttle Body Spacers on sale too. LEt em know thanks.
Mitch

 

Yes it does. If I'm not hard on the motor.

 

Throttle Body Spacers give more time to mix before it burns up in the engine. i'm plannin on gettin it when i get back to work come summer.

 

That is only true for TBI or carb motors. With the CPI or SCFI motors, the fuel is injected directly ahead of the intake valve. The length of the intake path before the injector has nothing to do with the fuel/air mixture.