Phil97SVT

We're installing another H & C combo this week and finally got our hands on the LS2 TB. At first glance it looks nice but on the top and bottom of the inlet there is almost a restrictor plate shape to the TB. Has anyone else ported one? I know the way the PCM works with idle and steps so we decided to do very little on the top but removed the restriction on the bottom. Would be interesting to see this on a flow bench to see if there is any difference.
Phil

z06Hunter

WKMCD

When I first saw the LS2 TB I think my intent was to simply knock down and contour the transition from the casting to the milled surface area as it approaches the butterfly on the front and the back side. My $.02

DTE Powertrain

We've been fully porting/flowing the LS2 throttle body for just a little over a year now with outstanding success. Additionally, it's overall design backed by sound GM engineering of the unit itself.


DTE

JC5

DTE, Please quantify outstanding success.

RJW

any pictures as well?

DTE Powertrain

Contributes to excellent power output compared to other 90mm throttle bodies on the market, no drivability issues...ever, easy to calibrate, O.E. appearence, slight ventury effect at blade when ported properly which increases air speed for laminar air movement and increased airflow, (a huge "pipe hole" of a T.B. is NOT always better....) easy to find and cost effective.

Never had a reason to take pictures, as this is typically done in-house, so no pictures available~sorry.


DTE