ive heard of getting some more torque by putting a throttle body spacer on i was jus wondering it it would work ?




1994 f150 xl

 

No, throttle body spacers, tornados, and anything else that claims significant gains for not much money or labor are generally a waste of money.

 

yea thas kinda what i figured i appreciate it tho

 

Install a 5 ltr throttle body.I did it it on my 89 4.9 and it made quite the difference.

 

You got any dyno numbers or timeslips to back that up? SOTP doesn't cut it.

 

You want a slight improvement in performance, cut out the stock muffler and install something free flowing. Beware, some performance mufflers still are restrictive as shown by smaller interior tubing diameter. Look down the tubes before you buy. You should feel the difference bet stock muffler and free flowing muffler. I did.

 

Silver Streak
It cost me 25 dollars at the pick a part for the 5 ltr throttle body and a little time for the install.I have no time slips as that would hardly be worth the bother.
I put the engine in a 56 m100 street rod that I built running dual fuel.Propane and gas.It's my daily driver out here on the west coast.
I got the idea from another member on this site from whom you also requested dyno numbers or time slips.
Just like you it didn't make sense to me because I was only enlarging the throttle body and not the intake.But I guess it's kind of like adding a K&N air filter.Your not changing the opening of the throttle body,just opening it up for more air.Hence better performance.
Anyway I thought for 25 dollars and two hours of my time I'd try it anyway.
I have a lot of respect for your knowledge on Ford products and have learned a lot from your comments in the past.So why don't you try this for yourself?It seems everyone else on this site that's done it says the same thing.
Noticeable better performance!There must be something to it.

 

I have asked for dyno numbers or timeslips from several people who have done the TB swap and none of them have stepped to the plate. I would love to try it, but the time and money to properly test it are not there right now. For some reason nobody seems to care about any kind of meaningful testing unless it comes out of my pocket. Even when I do test something it makes no difference. The fact is that I could bring in a dyno sheet tomorrow showing that there was no gain and everyone would say it was wrong. Example: The majority vote is that headers are useless on a 300 even though my dyno numbers and track times show that they obviously worked wonders on my truck. One set of dyno numbers doesn't constitute the gospel, but since there's only one set to go from right now we have to accept it as such.

Regardless, the 5.0/5.8 TB will eventually find its way to the dyno along with the two prototype intakes that are on the shelf at home and we'll know what there is to be found upstream of the intake ports.

As I have said before, the average butt-o-meter can't tell the difference until the gains are around 10%. Even if there is no increase in power, the TB greatly increases the throttle response and that is often interpreted as an increase in power. I have installed dozens of oversized TB's on a variety of vehicles with before and after dyno testing and I have never seen any meaningful increase on a near stock vehicle.

 

As stated the throttle spacers don't work at least on EFI Multiports. I am planning to open up my exhaust (free flowing cat/muffler) and use a drop in K&N. What is the difference between the 4.9 and 5.0 TBs?
I really can't speak about headers on the 300 but it sure made a difference on all the engines I've put them on (6) and that included several inlines. The 300 seems to have the best stock exhaust manifold setup for any US inline six that I've seen. If I was doing any head modifications I would definately consider headers.
I know that not everyone has the time or track nearby to get a timeslip but it is the only real way to measure improvements. But for 25 bucks why not.
Very interested in the prototype intakes.
regards
rikard

 

The 5.0 has larger ports.So it can suck more air.You will definately notice a difference.

 

I put a TBS on my stock 4.9L and did not improve the low end at all - I do note a little better response on the high end

 

I am a newbie member and i have a 96 f150 with the 300 and i have installed a throttle body spacer on my truck and my personal experience with it is it doesnt change a thing execpt for a little bit more response on the top end and gas mileage didnt change any which is why i bought it in the first place.