Anybody know the inner diameter sizes of the LS and GSR throttle bodies? On obd1 models?? I was gonna buy an ls one and have it maxbored, but was wondering if i should should start with a GSR one, even though it couldnt be more than a couple millimeters bigger anyhow.... ?

 

i think they are the same size 58mm but im not sure

 

I believe they are both 62mm at the "mouth" and 60mm at the "throat". I recently was in possession of both, and they are both tapered. One is sold and one is at a machine shop currently, so no direct comparions can be done.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jlacoy82 &raquo;</TD></TR><TR><TD CLASS="quote">I believe they are both 62mm at the "mouth" and 60mm at the "throat". I recently was in possession of both, and they are both tapered. One is sold and one is at a machine shop currently, so no direct comparions can be done. </TD></TR></TABLE>

thats correct. Automatic LS had smaller TBs

 

****, turns out its an auto ls tb...so thats smaller than m/t ls and gsrs...

anybody know the size of that?