I was wondering before purchasing one, if these things are worth buying. can anyone help?

 

no...i felt absolutely no difference. put that money to a new manifold where u'll really feel it

 

Alright, thank you much.

 

wait until you have alot of mods before doing the small things, especially when the small things cost around 50 bucks.

 

I have yet to figure out why people keep judging 50 dollar "mods" with the butt dyno? If anyone finds a part for 50 dollars or less that you can feel in the seat of your pants, please let me know cause I'd like to know what it is. If an engine builder dynos a motor, then puts on a spacer and gets an extra 5-10 hp, do you think he's gonna take it off cause he knows he won't be able to feel it in the seat? Ofcourse not, he's trying to do what just about everyone else on this board is doing, TRYING TO SQUEEZE EVERY LAST DROP OF HP OUT OF A MOTOR. Now I know that spacers work with some combos and not with others, so was planning on getting my car dynoed with my new 350 tbi so I think I'll get a baseline without and then with.

Tom

 

A nitrous spray plate for TBI is about 1/2" thick

 

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.

 

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..