hey guys,
I'm swapping a '93 LT1 into a '72 Vega. Due to clearance issues I need to run a remote electric water pump (Meziere WP337). There are no aftermarket suppliers for water pump block plates that will allow me to run AN- to the remote pump.

Meziere makes these: http://meziere.com/images/WP84a_zoom.jpg but they don't make any for LT1.

My question is this: The LT1 style pump (image here, http://www.projecttransam.com/waterpump/mz_wpback.jpg) is different from a SBC pump (image here, http://www.edelbrock.com/automotive/...ater_pump.gif).

Is there anything special about the LT1 style inlets to the block? There are two holes on the LT1 pump compared to a SBC pump. Do I need to run two inlets from my Meziere pump? If so, can I just run one feed from the Meziere pump and "y" it at the block adapter plate? What size AN- should I run? Or should I have my CNC guy just make one plate that will supply coolant to both inlets through one fitting. My worry is that the LT1 pump supplies two different water pressures to the different coolant passages.

Thanks for your help,
Colin

 

Since no one has answered yet, I will say something---which may not be at all helpful, but nevertheless. The lt1 cools the heads first (reverse cooling) and you might be able to determine something from Shbox.com------might be a diagram that will help you.

 

In re the 2 different water pressures, I believe the lower pressure side goes to the heater (to prevent it from rupturing the coils) and and the other to the either to the heads or the radiator depending on how hot the coolant is--

Probably doesn't answer your question, but as long as you understand that the LT1, as a reverse cooling system , first feeds the heads from the bottom of the radiator through the thermostat and then goes through the block to the waterpump which pumps the coolant either through the heater as well as the radiator and back out though the thermostat, or of course if the heater is not on just back through the radiator or didrectly to the heads.

 

Thanks for the replies. I understand it's a reverse cool system. What I'm trying to find out is whether there's a pressure difference between the two holes on each side of the block. If not, I don't see a problem running a single outlet plate on each side of the block to my water pump that I can t-off for my heater. I'm only running a heater. No other accessories except an alternator.

Basically, I'm unsure why Meziere told me they would not even consider making block plates for Gen-II motors. Odd.

Thanks,
Colin