New to site, new to Mopar overheating issues

moparmat2000 said

Look again 318-340 have same number of blades only on the air conditioning ones. 6 It's in your FSM. I just looked. 318 non A/C shows 8 bladed pump. 318 with A/C shows 6. 340 shows 6 bladed for both non A/C and A/C. Your the one talking about more coolant flow. If that's the case then why doesnt your FSM list an 8 bladed pump on the 340 with that faster pulley ratio? Probably because it's not needed.

Again he is using 67-69 non A/C pulleys. Ratio is different than 70 up 340. The 67-69 318-340 more than likely used the same diameter pulleys. It does not matter he has a 70 up water pump and radiator on his 340.

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Ok. You are just TOO STUPID to deal with. It’s whatever you say.

Listen moron, when the FACTORY wanted maximum cooling THEY overdrive the water pump.

The reason they underdrive some of them is because it does take more power. Not much, but some. So on the underpowered stuff like the /6 they slowed the WP down.

I’m confident you’d argue with a stop sign.

EDIT: they even used OD pulleys on the 225, both AC and non AC. Maybe you should get on the phone with someone like Stewart Components, who manufacture high flow water pumps and other cooling products and ask them about pump speed, coolant flow and impeller size and blade count.

No, don’t do that. You may learn something.