Has anyone done a LS1 TB swap yet?

[Half Assed]

I've known of some 03's with FBW, also the ls1 tb is bigger.

gotcha, stock gmt400 is 70mm. LS1 is 75mm or 78mm on the later ones according to google.

 

[JonZ71]

yiss i'll probably tear down the other throttle body this week.

 

[Half Assed]

ebay seems to be showing 4.8/5.3/6.0 TB's with the LS1 TB's. Next time I'm at the junkyard I'm going to see if a NBS TB fits and OBS.

 

[Kyle97GMC]

That would be an awesome swap

 

[JonZ71]

NBS up to 03-04 will fit. i think when they went to cat eyes is when they changed most of them

 

[Horns]

Don't take this as being a dick, just going to teach ya. Polar, LS based engines all had cable driven systems until hmm.... 04? all fbodies were cable driven, some gtos i believe were fbw, and everything now is fbw.

Depends on the vehicle. All 3rd gen LS engines are cable driver while all of the 4th gen LS engines are drive by wire. But you are correct, there are plenty of cable driven LS throttle bodies.

 

[JonZ71]

Well when was the cutoff for the 3rd gen engines?

 

[Horns]

Sometimes you can find a year overlap in most vehicles, but anything pre-2005 should be gen III with an actual throttle cable.

 

[JonZ71]

I'm tearing apart mine now.... Wondering if i took my shaft off of my vortec TB and make it fit on this one.. Hmm.

 

[Half Assed]

I'm interested to see how you adapt the throttle body shaft to work on a 350. Isn't the cable arm thingy pressed on the end of the shaft? I'm not to familiar with the throttle bodies on the OBS and NBS.