Does anyone make performance aftermarket throttle bodies for the 3800 Series I?

Guess not

I know they make them for the series 2. The series 1 and series 2 do have a bit different TB'*. You might be able to get one ot the GP ones to fit but no garnutees. I haven't seen one for the series1 ever.

Give us some slack! This **** takes time too! I'm presently working on three projects at the same time! Will is well working on a whole bunch too!

I didn't really expect you guys to design a throttle body, I was thinking maybe some store similar to GP did. The series 1 is sometimes too out of date for many companies to care about making aftermarket parts for

Basically... that'* why they don't do parts for Grand Prix'* with Series I engines since they are not as effecient as the Series II.