"A deal I couldn’t refuse" that’s what I keep telling myself.. But I just bought a boat (Literally 10 hours ago) a 1980 Southwind boat with a 424 Motor and Dual Holly Carbs the pump is a Jacuzzi jet boat pump. Sounds like I know what I’m saying... sure don’t...       I know Motors just fine. But Jet Pumps... Not one bit.  I was told that I shouldn’t start the boat out of water and if I have too... just put a water hose at the end... Now currently I Have a Yamaha jet skies and I connect a water hose to them in a particular spot... But the Jacuzzi pump doesn’t have a port for that?? .. Do they make one to attach somewhere? HEEEELLLP! Duh..

More dumb questions to come! But Thanks guys!

Thanks Chief  I Saw what you where talking about on the Jet pump inside,  I followed a Hose directly plugged into the jet that goes from the Jet into a Water Valve that can be opened or closed. I figure this is what you’re talking about...... Pic Provided (Valve 1 & 2 )...This valve has a quick disconnect like a garden hose would.. This also does go straight into the motor as well...Is this is it...if so, I believe you mentioned to plug a water hose directly into the Motor using this quick disconnect and also The jet Pump in the back.. 2 Water hoses right  Makes sense now... I only want turn it on for the sake of a tune-up before I get to the river... Wouldn’t want to be one of those guys that keeps the ramp occupied for too long. I am taking it to the River this weekend in Laughlin.. So thanks for the help Chief… 
Ps...   
Minor Mistake by me as well, I meant a 454 Chevy Motor  . 

i got the same pump.. its a jacuzzi wj.. good pump... i like mine and have no problems so far....

when i run my motor i disconnect the pump completely.. its just 4 bolts that are in the fly wheel.. not sure if anyone else does that, but i do.. that way im not runnin the pump out of water...

welcome to SCJB