vette dude Posted August 8, 2004 Report Share Posted August 8, 2004 OK I would like to know where the website is that tells u how to port your TB I have mine off the truck, and i have my dye grinder ready to go, I am going to post pics of the Stock TB here in a sec, I believe that the Idea behind it is smothing out all of the rigges and such, and not actualy making the opening bigger. advice is verry helpfull.. Posted PICS they are huge so i will RE-Size The areas i am thinking i should port are the ones circled, i was also thinking i sould feather the areas between the two luines... Does anyone have some advice as to what i should use to fillin the big hole? I was thinking of taking some pipe and then using some type of epoxy to putty around it.. Link to comment Share on other sites More sharing options...
vette dude Posted August 8, 2004 Author Report Share Posted August 8, 2004 Link to comment Share on other sites More sharing options...
BenKey Posted August 8, 2004 Report Share Posted August 8, 2004 Not sure if I would attempt, personally anyway, unless I was able to tune to what the differences are probably going to be. Link to comment Share on other sites More sharing options...
vette dude Posted August 9, 2004 Author Report Share Posted August 9, 2004 Not sure if I would attempt, personally anyway, unless I was able to tune to what the differences are probably going to be. good point.... Link to comment Share on other sites More sharing options...
XGMTech Posted August 9, 2004 Report Share Posted August 9, 2004 I definitely wouldn't attempt something like that, and there's not much on a vehicle that I won't dive into. BUT... why not have the pros do it for you, it's not that expensive... check out this link: Lingenfelter Performance If my mods take me to the point where I need my TB reworked, these would be the guys I'd turn to. Hope this helps, good luck... Link to comment Share on other sites More sharing options...
vette dude Posted August 9, 2004 Author Report Share Posted August 9, 2004 I definitely wouldn't attempt something like that, and there's not much on a vehicle that I won't dive into. BUT... why not have the pros do it for you, it's not that expensive... check out this link: Lingenfelter Performance If my mods take me to the point where I need my TB reworked, these would be the guys I'd turn to. Hope this helps, good luck... that price3 is not bad, but they don't really do anything about the air hole, i guess i could always fill that in when i got it back... Link to comment Share on other sites More sharing options...
CraigW Posted August 9, 2004 Report Share Posted August 9, 2004 I thought that did something? Doesnt someone make a insert the is smooth I think its Vararam Industries VR velocity stack($30). Says its supposed to eliminate the need for ported throttle body. Seen it in Truckin Magazine. Link to comment Share on other sites More sharing options...
styleandspeed Posted August 9, 2004 Report Share Posted August 9, 2004 Port it yourself, and don't worry that much about it. To fill in that hole which I would do if you had a manual TB, because all you would have to do to change the idle is to adjust the screw. Not sure if I would on a electronic controlled one unless I could tune. On the manual ones I take a straw, and cover it with a light coating of grease or wax, stick the straw(or something about the same size of the hole) down in the hole and then fill the rest of that hole in with jb weld. Then after you are done, pull out the straw, and your IAC will still work, with a much smoother hole. When you do port and polish just stick a piece of paper towel in the hole and pull it out with some needlenose pliers. Link to comment Share on other sites More sharing options...
BigTex Posted August 9, 2004 Report Share Posted August 9, 2004 Here is my before and after porting: http://z71.net/TB2.jpg http://z71.net/TB1.jpg Made a difference in power I think. But it caused some major idle issues because of the drive by wire system. The PCM knows how much air should flow when the blade is open at different intervals. By porting the TB, you really change the airflow values when the blade is near closed. To make the truck idle, the blade is opened a couple of degrees by the PCM. After porting, its idle was way too large. I think this was due to removing that tongue shaped ridge on the bottom. Link to comment Share on other sites More sharing options...
BigTex Posted August 9, 2004 Report Share Posted August 9, 2004 I made a dozen attempts to tune with LS1 Edit to get a better idle and proper throttle response after porting. I couldn't get it back to stock like drivability. I put a stock TB back on the truck. Link to comment Share on other sites More sharing options...
RollinSSHard Posted August 9, 2004 Report Share Posted August 9, 2004 I got a Velocity Stack and droped two tenths at the track with it in!! Link to comment Share on other sites More sharing options...
vette dude Posted August 9, 2004 Author Report Share Posted August 9, 2004 I made a dozen attempts to tune with LS1 Edit to get a better idle and proper throttle response after porting. I couldn't get it back to stock like drivability. I put a stock TB back on the truck. how bad was the idle? that dont soyund too motivating... Link to comment Share on other sites More sharing options...
vette dude Posted August 9, 2004 Author Report Share Posted August 9, 2004 Port it yourself, and don't worry that much about it. To fill in that hole which I would do if you had a manual TB, because all you would have to do to change the idle is to adjust the screw. Not sure if I would on a electronic controlled one unless I could tune. On the manual ones I take a straw, and cover it with a light coating of grease or wax, stick the straw(or something about the same size of the hole) down in the hole and then fill the rest of that hole in with jb weld. Then after you are done, pull out the straw, and your IAC will still work, with a much smoother hole. When you do port and polish just stick a piece of paper towel in the hole and pull it out with some needlenose pliers. I was thinking of getting a brass tube and just leaving it in there, and porting that to smooth it put... Link to comment Share on other sites More sharing options...
BenKey Posted August 10, 2004 Report Share Posted August 10, 2004 Port it yourself, and don't worry that much about it. To fill in that hole which I would do if you had a manual TB, because all you would have to do to change the idle is to adjust the screw. Not sure if I would on a electronic controlled one unless I could tune. On the manual ones I take a straw, and cover it with a light coating of grease or wax, stick the straw(or something about the same size of the hole) down in the hole and then fill the rest of that hole in with jb weld. Then after you are done, pull out the straw, and your IAC will still work, with a much smoother hole. When you do port and polish just stick a piece of paper towel in the hole and pull it out with some needlenose pliers. I was thinking of getting a brass tube and just leaving it in there, and porting that to smooth it put... Some people have filled the cavity and left the hole. Filled the cavity to contour with the TB. Link to comment Share on other sites More sharing options...
BigTex Posted August 11, 2004 Report Share Posted August 11, 2004 Vette dude - the idle speed increased because of the extra airflow. WHen I put it in gear, it would start driving itself, shifting gears and everything. At highway speeds, it felt like the cruise control was always on. It wouldn't slow down at all when I let off the petal. Braking was much more difficult since it wanted to accellerate. I tried to cut down the idle airflow values and the IAC values. This made it not want to drive itself as much, but it would aslo die sometimes and had crazy idle rpms. Oh yeah...I had a tune PERFECT (so I thought). It drove very well, then I turned the A/C system on and the idle / throttle issues were much worse. I think I'll port another TB, but I'll leave more material on the bottom thick area. If I can cut back some of the negative effects of the porting, I think I can tune around some minor issues. Also, I'm looking forward to seeing if I can adapt a 2005 truck throttle body and intake or LS2 vette setup to my truck. Link to comment Share on other sites More sharing options...
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