Water pump bypass

[pepemotorsports]

Hi Everyone
Just fired up my 409 for the First time !
ITS ALIVE!
Is ít ok not to use a bypass hose On the water pump
My 57 Chevy îs a Heater delet car
It would be cleaner without any hose
Thanks
I always apreciate the help i have gotten
Paul
Pepe Motorsports

 

[Fathead Racing]

You can block off the bypass.

 

[benchseat4speed]

I pulled the pipe stub out and threaded mine, brass pipe plug. Used an npt tap. Can’t remember what size tho.

 

[El Rat]

My Offy Manafold does not have a provision for WP bypass “they” must not think it necessary so I quit worrying about it.

 

[Carmine]

I want to understand this correctly, so what I'm reading is that the small hose that goes from the intake to the top of the water pump, can be blocked off, is not needed??? Does this affect cooling at all?? If this is ok to do, then why did GM do it to begin with?? I'm trying to rationalize this. Thanks, Carmine.

 

[dm62409]

On a heater delete car , with the small hose to water pump blocked off, the thermostat stops all water circulation. The small hose let a small amount of water circulate to stop hot spots and air pockets. I don't think this was a problem on cars with heaters. Cars with heaters still circulated water through heater when thermostat was still shut. A small (1/8-3/16) hole drilled in thermostat will keep coolant moving in a heater delete car if you block the bypass.