Big Daddy 360

On my 89' vert I replaced my injectors, polished the plenum/runners, and reassembled...well almost anyway. Can someone tell me where the items circled in blue and the hose indicated by the blue arrow all go?

Thank you in advance

Cliff Harris

In the second picture, the hose on the left goes on the fitting on the bottom of the throttle body.

The A.I.R. valves changed in 1989 and I have an '86, so mine doesn't look like yours. That said, there are two outputs from the A.I.R. valves. One goes to the exhaust manifolds and the other goes to a tube that goes back to the catalytic converter. The picture will give you an idea of what I'm talking about. The two A.I.R. check valves are below the oil filler cap here. The top one is the exhaust manifold and the bottom one is the catalytic converter tube. There is a metal tube that makes a connection to the driver's side exhaust manifold. You can also see the heater hose connected to the throttle body:

vetteoz

In the rubbish bin usually , they are the first items most commonly deleted by owners to clean up the engine bay.

The heater hose shown is run straight to the front of the intake manifold as part of the popular "TB bypass" procedure so there are no hose going to the port on the TB you show

leesvet

get some large vac caps to complete the "look"

Big Daddy 360

I am learning as I go so please forgive my lack of knowledge but when you say the "front of the intake manifold" do you mean near the coil or below the throttle body in front or something?

BTW, my L98 exhaust consists of Hooker 2149 ceramic headers which connect to a dual Borla exhaust straight piped out the back (read no cats) so emissions aren't even a factor.