Hey guys,

Does anyone know what the throttle body opening is on the L31 intakes?

Thanks

 

What are you looking for

 

from what I have read the stock tbody on these is 72mm but I have been unable to find what the diameter of the intake opening itself is. I have a BBK 80mm LS1 tbody Im thinking about trying to use with a spacer, but if the intake itself is 72mm its pointless.

 

I'd measure it and see what it is

 

It is 72mm. When you buy a BBK 80mm TB for these it comes with a tapered spacer that doubles as a reducer.

Unless you're getting this for basically free, don't bother.

 

does rhe L31 throttle body have the same bolt pattern as the LS engines

 

I know they are both 3 bolt, but other than that Im not sure. I'd be willing to bet its the same as I believe the 3.8 liter motors use the same pattern as well