i checked the new million pump in the mopar perforce housing. I used a clay like substance on the bevel where the impeller sits closely 2. it is about 1/8th" thick. the blades made no indentation at all so i doubled it up and tried again. they barely touched the clay at almost .25" !!!! that seems like a seriously huge gap between the impeller and housing, this was also without a gasket!

I checked it on the 440 source housing, and you can see it kisses the clay at 1/8" and smashed into it at 1/4".

I ran the 440 source housing, (smaller ports) the new milodon pump and a new highflown 160* T stat.

At idle in my carport it comes to 170* the t stat opens and it drops to 150*ish. when it warms that water up the stat opens again and hot water from the rad coms in and a few seconds later at about 210* the fan comes on and brings everything back down to 170-180* idling fan goes off and then on and so on. it works in the carport.

I took it for a test drive, it hung out around 200*-210* driving. seemed fine there, when i came to a stop it would slowly come down to 190-180* start driving again and it would go back to 200-210*. Maybe it isn't the best radiator? maybe the small ports on the housing don't flow enough water? maybe its a combination of it all.


Now why does it backfire through the carb? from just off idle if i stab it at all it back fires through the carb, i can ease into it no problem.

timing it at 15* at idle. im more of computer tuning guy, never been any good with these carbs. Any advise or insight on this one>???