i was reading on a taurus site and seen an article about half shafting the TB. it says it can be done to any TB. would this have any use for us and show and performance gains? read the article here: http://www.tauruscarclub.com/mods/mods.php?cat=2&id=755

 

Reducing the cross section of the butterfly shaft at w.o.t. would increase airflow IF the throttle body was a restriction. I believe Silverstreak tested the stock TB with a vaccum gauge and found it to not be a restriction. This might change if the engine was modified to ingest a greater volume of air. It'd need to be a big change though. Pretty sure Silverstreak has some decent engine mods, and still not showing a restriction. Maybe he'll pop in. Maybe not.

Hope that helps.

 

I've had a pressure gauge on more places on my truck than I can remember. I did test several places in the intake and found that the stock induction system was not a restriction until past 4000 rpms. My mods are long tube headers and exhaust, 19lb injectors and an MSD ignition. If you have a cam or ported heads you might gain something, but probably only a few HP. The long intake runners are going to choke down the engine regardless of how large the TB is. Long runners make loads of torque, but not much HP. No ammount of airflow potential ahead of the runner will change that.

 

i just found it interesting that someone tried that different things. didnt think it would have any help, o well.

 

Ford already half shafted the T/B on the trucks. That mod is designed for T/Bs where the butterfly blades are inserted in a slot in the shaft.

 

never knew that...i just brought it up cuz i thought is was intereting...