My1st Truck

iTrader: (8)

Simple question.
I want to get new one, the current one is a 16 lbs
The parts store say it should be an 18 lbs one vented.

My1st Truck

iTrader: (8)

Could someone just look at there stock one. My current one is aftemarket as well.

-98-Z28-Darkness-

iTrader: (7)

go to autozone thell tell you exactly the one youll need.... usually have the normal one and the one with the pressure relese

noriceinside

iTrader: (6)

being that the cap is on the radiator and not an expansion tank like some other vehicles, i'd say its definitely a non vented cap.

My1st Truck

iTrader: (8)

Thanks,
Reason I ask is I replaced the T-stat and water pump. The 16 lbs cap was on there. I swapped it for the correct 18 lbs non-vented from AZ and the main hose going into the top of the pump started blowing coolant out under pressure.

jam01

i never heard of a vented radiator cap. sounds like somebody doesnt know whats they talking about. i know it needs pressure and there are different lbs ratings. some have a release valve on top. if you are talking about a camaro im pretty sure it is a closed system, which means it has a fill tank and you dont add fluid thru the radiator.

My1st Truck

iTrader: (8)

A few of the caps I looked at said vented right on them, they weren't the lever kind either.
They have something in the center that lifts.

My1st Truck

iTrader: (8)

Went back to a 16lbs cap this morning no leaks. That was all I changed. That is a wierd one to me.