July 4, 2011i ported and polished my throttle body and was wondering how i can get better throttle response. the throttle cable doesnt seem to have a way to adjust it.
Forums : General Discussions : better throttle response (2325 Views)
July 4, 2011Can you give more details about your truck?
July 4, 2011yeah sorry, its a 2001 silverado. 4.8L v8 reg. cab .long bed tow package
July 4, 2011If you have no other mods, I`d suggest a custom tune. They`ve always helped the trucks I`ve owned alot. If you don`t have a cold air intake, then I`d suggest one of those. Some of my favorites are S&B filters and Volants intake. Both are true cold air intakes and over decent improvements of throttle response.
If thats not enough, then I`d consider a cam swap and even a torque convert swap to a higher stall. And.. last would be gears. Depending on what gears you have now could really help your throttle response and power take off. :
July 4, 2011well i dont have a cold air intake but i have a cone filter sittin where the stock air filter box was.. it seems to be robbing me of power. i can spin tires anymore or even do a break stand. and as far as gears. i dont know the gear ratio but first gear goes to 45 and second gear goes to 94 and then its governed at 98. i was just thinking something along the lines of shortening the throttle cable a little bit
July 5, 2011Shorter cable isn`t going to do it. And your right, the open air filter is just sucking hot air into the engine and robbing you of power.
You can figure out what gears you have by checking the glove box RPO codes.
GU6 - 3.42
GT4 - 3.73
GT5 - 4.10
G80 - Factory lockers
July 6, 2011On the back side of the throttle body blade, there`s a cup shaped air dam. It`s purpose is to allow only 1/2 the throttle body to flow air at low throttle. This makes for smoother takeoffs...it also makes throttle response suck. I remove it in all my Chevys.
If I remember correctly:
- Remove the throttle body blade with a torx screw driver.
- Drill the rivets out to remove the air dam from the blade.
- Fill all holes in the blade with JB weld and allow to dry.
- Drill the center hole out with a very small drillbit (the same size as the center hole in the piece you removed) so that vehicle can still get a little airflow at idle.
It makes a HUGE difference. There`s some writeups with pics on the web somewhere.
Here`s a picture of the piece you remove from one of my vehicles from years ago:
July 6, 2011yeahh did that already. and they are 3.42 gears. is that good? and thanks for the input guys.
July 6, 2011this is a interesting mod!
July 7, 2011Brian I remeber that write up! and I still have that exact picture on my computer but have never done that to my truck... Kinda crazy I though that picture was long gone.
July 7, 2011i cant find much info on it.....pros.....cons.....???
July 7, 20113.42 gears is your problem with throttle response. Being geared so high, you don`t have much torque at all. 3.42s are good for gas mileage. No good for throttle response, towing, launching or acceleration.
Did I do a write-up on the throttle body blade mod? Not gonna dig through 10,000 posts looking for it; lol.
Pros: Better throttle response.
Cons: IMO none; but some people might notice more difficulty making take-offs extra smooth.