first off i have a stock radiator. On the passenger side the topmost large hose (right beneath the hose for the resevoir tank) from what i understand used to connect to the heater.

Now this hose is connected into the top of my intake manifold (holley street dominator intake). It connects just to the side of the thermostat housing.

I dont understand why that hose is there. My car no longer has any ac or heat.

 

That's the coolant bypass for when the thermostat is closed. The SBC has a bypass built into the block but it isn't enough for high reving engines. If you rev your engine high, keep it. If not, you can cap both the intake and the radiator. This hose can also run from the intake to the water pump.

 

the engine is a 5.7 1990's block with a 480 lift cam, headers, and a holley 650 carb.

I want my car to warm up faster. Will it if this hose is removed?

i only rev the car high when doing a quarter mile or rarely i do quick acceleration.

I run at 2000 rpm cruising is the city. On the highway i run between 1600 and 2100 rpms that between 60 and 85 mph

 

I would keep the hose but return it the the WP instead of the radiator. Get two 1/2" npt X 3/8" barb connectors and a 1' long piece of 3/8 hose and make the hose run from the intake to the WP. Then cap the radiator inlet.

 

No reason to be "reving high" when the thermostat is still closed.

 

thanks will do that