LS1 Throttle body

**2002ssslp** · 07-10-2011, 07:36 AM

I need some advice. I do not feel I am getting the proper performance from my stock throttle body. I do not think the throttle is open all the way at WOT and I think with the mild mods I have it may be time to think about an upgrade. What is the deal with the coolant line, do I need that ? How big should I go with a mostly stock motor ? Do I need to reprogram my computer, it is going to Frost this week. what should I know about the swap.
Thanks for the help. I am a rookie at this Chevy thing having been a Mopar guy most of my life.
2002 Maro SS with SLP airbox, bellows, MAF, K&N, headers, 3" center exhaust, iridium plugs.

**JayTA98** · 07-10-2011, 08:05 AM

what makes you think the TB is not working properly? To my knowledge the stock TB is good up to 500 HP. Alot of members port and polish their TB. they say it gives them a quicker response in acceleration. You don't need the coolant line so you can bypass it.

**2002ssslp** · 07-10-2011, 09:22 AM

I am a carb guy and this is just a gut feeling. I do feel the snap is crisp at WOT but I am always worried about the throttle stop not allowing true WOT. Too much time tuning Holley's and Deamon carbs I guess. So you feel I should stay with the 800cfm stock TB ?

***SMWS6TA*** · 07-10-2011, 12:13 PM

Like Jay said, a lot of us stay with a P&P stock TB, If you have/or are going to a FAST 102 then you need to consider going with a bigger TB.

You sluggishness might be from your MAF needing a cleaning.

Do you run a K&N type air filter? If so the oils are affecting the MAF. Get some MAF cleaner and clean it. I do mine monthly.

When you say mild mods, what are they?

**2002ssslp** · 07-10-2011, 12:36 PM

I think you may be right on the MAF needing to be cleaned. I run a KN filter and the oil is an issue with some MAF, a 5 dollar can of cleaner may do the trick. I will not be replacing the LS6 manifold. Many people have already told me to stay with that unit because it is a solid piece and it makes HP. I am not going crazy with this car, I just want to kill some Stangs, Rice-Rockets and maby a Vette or two. Mods are mild and list above. Frost is doing a tune for me next week so they may be all I need. Thank you for all the help.

**cammed goat** · 07-10-2011, 02:01 PM

If your car is stored in the winter, you can bypass the throttlebody coolant line. If you drive during the winter, then you will need that coolant line connected.

***SMWS6TA*** · 07-11-2011, 08:05 AM

I'd add SFC's to your things to do. These cars need 'em even under stock power.

**JayTA98** · 07-11-2011, 01:21 PM

Originally Posted by cammed goat

If your car is stored in the winter, you can bypass the throttlebody coolant line. If you drive during the winter, then you will need that coolant line connected.

Good point I forget about you guys with the snow.

***SMWS6TA*** · 07-11-2011, 01:35 PM

See I disagree. Engines perform better with cold dense air. What benefit running the coolant through the TB give?

**JayTA98** · 07-11-2011, 01:42 PM

Originally Posted by SMWS6TA

See I disagree. Engines perform better with cold dense air. What benefit running the coolant through the TB give?

well i will think if it is freezing cold the TB will need to stay warm so it can move. but again I don't see snow...

**cammed goat** · 07-11-2011, 01:59 PM

I have seen members on other forums ask if one would want their tb cable to snap from a frozen tb.

**2002ssslp** · 07-11-2011, 02:46 PM

No winter driving guys. This vehicle will be put away in November and brought out in April. No snow, no rain, no nothing unless it is bright and sunny. By the way, what are SFC's that Scott had had suggested.

***SMWS6TA*** · 07-11-2011, 03:05 PM

SFC's = Sub Frame Connectors 3 point are best, 2 points are very good as well.

***SMWS6TA*** · 07-11-2011, 03:07 PM

Originally Posted by JayTA98

well i will think if it is freezing cold the TB will need to stay warm so it can move. but again I don't see snow...

Originally Posted by cammed goat

I have seen members on other forums ask if one would want their tb cable to snap from a frozen tb.

Ok I could see that. It's just not something me or Jay have to worry to much about.

**Z28_Driver** · 07-11-2011, 06:14 PM

Not much chance of the throttle cable snappin in winter without the coolant flowing through it. It flows throught the throttle body, not the cable. Ambient air under the hood is still nice and toasty in zero degree weather anyway.
I guess if you hose down the throttle blade before you turn it off at night and let it freeze overnight that might be a problem.
I have no problems with my TB or cable over the winter with the TB coolant line bypass. Maybe I'm lucky.

**JayTA98** · 07-11-2011, 08:37 PM

Originally Posted by SMWS6TA

Ok I could see that. It's just not something me or Jay have to worry to much about.

yup if it starts to snow here we are in big trouble. I can imagine all these Floridians trying to drive in snow icluding myself...

**TransAmX2** · 07-13-2011, 10:01 AM

Originally Posted by JayTA98

yup if it starts to snow here we are in big trouble. I can imagine all these Floridians trying to drive in snow icluding myself...

hell, most floridians can't drive on dry roads let alone wet or.... show me the way to the bomb shelter....snow.

**JayTA98** · 07-14-2011, 07:42 PM

Originally Posted by TransAmX2

hell, most floridians can't drive on dry roads let alone wet or.... show me the way to the bomb shelter....snow.

lol

**Z28_Driver** · 07-15-2011, 03:58 AM

Come on you guys. You can drive on snow. It easier to make a u-turn. Power slides are possible in anything, and any f-body driver is ahead of the pack. (Angry drivers that can't pass you doing 20 in a 55 zone in a snowstorm.) I once had about 30 cars stuck behind me in the Z28 with summer racing tires in about 2 inches of snow.

**TransAmX2** · 07-15-2011, 07:35 AM

Originally Posted by Z28_Driver

Come on you guys. You can drive on snow. It easier to make a u-turn. Power slides are possible in anything, and any f-body driver is ahead of the pack. (Angry drivers that can't pass you doing 20 in a 55 zone in a snowstorm.) I once had about 30 cars stuck behind me in the Z28 with summer racing tires in about 2 inches of snow.

oh, I can drive in snow, I lived in upstate NY for years while owning 2x '86 V6 camaros, a '87 TA and a '95 Z28. I just don't want to experience the nightmare of floridians trying to do the same, I've seen more roll over accidents in florida rain than I've seen fender benders in a NY snowstorm. No cell phone laws, average age of 65, no state vehicle safety inspection, no idea what a turn signal is for, no common sence to get out of the fast lane when doing 10mph under the speed limit, won't turn on headlights in a driving downpour, and a special ability to wait until after a turn to realize they are in the wrong lane but too stupid to wait and pass and figure a way back they just turn stright across traffic, oh and the NECESSITY to slam on the breaks when they see a cap or accident and rubberneck. (I'm not bitter, just experienced) Riding a motorcycle around some of these idiots had really taken a lot of the joy of biking out of it for me...Hmm My ZX10R is worth about as much as a Procharger Kit....