borrone821

iTrader: (3)

Question for you guys running an LY6 with the stock truck intake.
Where are the vacuum ports?
And there's a hard connection between both heads, then on the passenger head, there's a nipple for what i'm assuming is a vacuum connection.

Just trying to figure out how and where to run the vacuum lines and how to build up the intake from filter to TB.

thanks
Jim

99VetteFRC

The hard line between the heads is coolant. the nipple goes to the bottom of the TB then the other side of the TB goes to the rad tank with the lower hose.

borrone821

iTrader: (3)

99Vette, thanks for the heads up on the coolant line... I'm going to have to take off the TB to make sure, but I can't feel any connections underneath it

Can anyone who took out an LY6 or who has one tell me what the intake ports connect to? I have no idea if these attachments will upload, but there's one on the passenger side, one on the driver side with an electrical connector, and one in the rear intake that looks like its plugged but I have no clue.

Thanks for any and all help

borrone821

iTrader: (3)

OK, so looks like the attachments worked. First pick, port is just left of the where the fuel rail loops over, 2nd pick is the rear, and 3rd is driver side with the red cap on it.

thanks again
Jim

borrone821

iTrader: (3)

Can anyone tell me what the vacuum port is that has the electrical connector that slides onto a tab on the fuel rail?

71403

Canister purge solenoid

Middle picture, "red ringed" plug is the port for the brake booster. You'll need the fitting, can find p/n if needed

There are no coolant ports on the stock DBW throttle body on my '07 LY6

99VetteFRC

Sorry mine is an 03 engine and uses a different intake.