over heat

[THA_BAD_ONE-0]

look, When i remove my heater core do i just use a bypass line, or block of the holes.

Whats the highest temp it should go Becuz i have a 10in electric fan infront of a 3-4core rad out of a chevelle, with a flex fan in front in traffic it still will heat up. to like 230, but when i am drive it on highway its like 190, what will do that

[Sparky2263]

Block the holes.

Sound like lack of airflow at low speeds.

[THA_BAD_ONE-0]

Is there a diff in a 4.3l water pump and a v8 pump. I think i use my v6 by mistake, whats culprit and how do i fix that

[Hammer Head]

if I'm not mistaken the 4.3 has only no outlet & the V8 has only one.. this is a problem I've had w/ one of my projects gone past, only I needed that hole. Just plug the single hole on the manifold.