LS1TAUTO

iTrader: (1)

I had my girl sit in my car and floor it when I was lookin at my throttle body and I noticed the butterfly opened like 75%??? Is it susposssed to open to the little metal peace???? Or is it supposed to open 75%???? For sure it's not opening all the way??? Pls help Thanks

JaYZeig

iTrader: (11)

thats how the throttlebody is built..alot of guys and aftermarket manufacturers grind about an eight of an inch (where that metal part is that stops the assembly) down so the t/b can open 100%

sjsingle1

iTrader: (1)

bought a PP TB that had that mod done to it

LS1TAUTO

iTrader: (1)

What I'm sayin is my throttle doesn't even touch that little stopper it's basically full throttle with and half an inch left to really be full throttle and touch that stopper

bayer-z28

iTrader: (14)

^ Yeah, it should touch the "stopper." If you rock the TB open all the way, look where it hits, or should.

You can kind of see it here.

Anthony Williams

iTrader: (3)

Your TB when closed should rotate up 90 deg. to be @ 100% open.

High_Angle

iTrader: (-1)

mine did the same thing till i ground off that nub. before the grind, EFI Live said it only opened up 75% and after it was 98%

DaveX

Adjust your throttle cable until it is actually hitting the stop. There is an adjustment in the middle of the cable between the TB and the firewall.

*02WS6TURK*

iTrader: (13)

Bump Stop delete is what ya need to do

Marc 85Z28

iTrader: (8)

Do this.


Ignore the fools telling you to mess with the throttle stop.

KRAZY K 2000 TA

iTrader: (5)

agree adjust throttle cable its very easy

z28guy0362

does grinding that off help alot or is it even worth it?

*02WS6TURK*

iTrader: (13)

Fools huh....so the bump stop mod is a waste of time there champ?

BOBS99SS

iTrader: (2)

Really when I ported mine I just grinded down the stop a lil and it was fine,fools I don't think so champ,there is a reason a lot have done this,agree can adjust the cable but when porting it takes like 2 seconds

LS1TAUTO

iTrader: (1)

Lol so u guys are saying my car hasn't even had full throttle yet?

BruceBufferTA

iTrader: (1)

Speaking of fools. Take a long hard look in the mirror and then punch yourself.

All OEM LS1 TB's only opened roughly 75% from the factory. Delete the bump stop delete like mentioned and you are good to go. Don't listen to that dipshit marc.

LS1TAUTO

iTrader: (1)

Ya but my throttle Isn't even touching the stopper I would understand if it touched it but there's like 25% left to touch the stopper

DaveX

It would be a waste of time for him since his TB is currently not touching the bump stop with the pedal on the floor. How is grinding down the stop going to change anything if it isn't even touching it?

It sounds to me like the cable needs to be adjusted and then you can do the bump stop mod if you want to.

*02WS6TURK*

iTrader: (13)

I failed to see that he had mentioned it didn't touch, so with that said the cable obviously needs to be addressed. You guys act like doing the bump stop mod is radical or something...lmao

JaYZeig

iTrader: (11)

and if he even still wants 100% throttle he will need to grind that bumpstop down after he adresses his cable slack.