Coolant flow

[kbenz]

I have a 96 motor stroked to a 383 in my 64 gmc. 20,000miles approx. Put a serpentine setup on about 3 months ago (along with new water pump) Motor seems to be cooling fine but I have no flow coming out of the pump for the heater. I can put a hosepipe to the return side and water flows out the output. Not sure how long its been like this I just opened the valve this past saturday to run my defrost. What y'all think?

Engine is cooling fine

 

[Clb]

idi swap it?!

go look

 

[Buffy]

The only thing that comes to mind is a lot of serpentine setups run a reverse flow water pump? Something to look into.

 

[Will Scarlet]

Quote:

The 'Help!' prefix is only broke down rigs where a member needs assistance. It is not contests, fundraisers, etc

You should not be using the "Help" prefix for this issue.

 

[kbenz]

The only thing that comes to mind is a lot of serpentine setups run a reverse flow water pump? Something to look into.

I put a 90 model pump on it and it's working now. It had a 96 on it. has the two outlet/inlet already on it. Must be the way they plumbed them