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I just read the book for the 2nd time since Christmas. It is an awesome story about the people who put PERFORMANCE in Mopar. Herb McCandless told me that Dick Maxwell and Tom Hoover were the 2 guys most responsible for his success. That prompted me to research them and lead me to this book...

That is a Nissan Merlot Pearl color. Thanks!

I thought I published final pictures. Sorry about that. Here are a few. Also, I finally determined that it has a 40 Chrysler, not DeSoto, front bumper. This is a fun car to drive! Thank you to all the FABO members who helped me sort it out.

Shazam! Took the shroud off, fabricated new mounts and took it for a spin. At 70 mph, 91 degrees ambient, it stayed on 180! I guess my homemade shroud was too shallow and too restrictive after all. Looks like it will stay cool when idling with the A.C. on, as well. Thanks for everyone help And...

Too late. Removing it wasn't as big a deal as infrared. (Hardly ever is.) I've made a new mount and will give it a try today.

I took it for a drive today and drove it in lower gears and same speed. This has the effect of increasing rpm and water pump speed. Result - nada. Same temps as before. So, the pulley thing is not my problem, apparently. I spoke to George at Champion Radiators later. His suggestion is that my...

I already welded it up. Got 12 initial and 34 at 3300. Thanks.

I'm definitely nowhere near opening the secondaries. The poor mileage was because my vacuum advance wasn't working, I'm sure. Haven't verified that yet but feel pretty confident it will be improved. Plus, was able to go to a leaner setup with the changed timing.

Haven't tried that. The load on the engine would be different for sure. I will try it tomorrow just to see.

Thanks! It validates what I think is happening. I'm anxious to try it.

I am running hypereutectic pistons. Summit P/N SLP-8KH116CP30. I can't find the specs on them, however. (You wouldn't happen to know would you?) They must have changed them. This one pings hot or cold with low octane fuel, even with my new timing setup. Maybe my water pump is not as efficient...

My crank pulley is about 7 3/8" diameter and the water pump pulley is about 7" or so. (It's hard to get to with all the belts on.) I am definitely turning the water pump slow, especially with overdrive in my transmission. Looks like the 3418227 pulley would speed me up. Is that correct? It...

Thanks. I don't have a shop manual. This is my first Mopar build and I have learned EVERYTHING the hard way.....it seems.

Why don't I just pull over and shoot both of them with my IR thermometer . They can't cool off that quickly. Isn't there a smaller pulley available for the water pump? That seems easy enough to try, given all the crap I've already done. The delta T will change with increased flow rate.

I don't think so. When the fan kicks on, there is a lot of hot air coming through. Ram air at 70 mph should be even more. Trust me, I've beat the air flow thing to death.

It's not. That's why I'm trying to figure out what is limiting the cooling. The radiator is a Champion 3 row and is rated for WAY more HP than I have.

I know I have a better tune up now with the modified distributor and the working vacuum canister. I will have to test mileage at some point but I found out today that 87 octane won't work in this engine, regardless of the change in timing. I believe I have a stock cam with higher compression...

Yes

I thought about that. It's a PITA but I may try it. I've got a couple more tests to run before I do that.

Hard to see. Its only about 3/4" deep. The radiator is about 18" wide, so the 16" fan occupies most of the area.

54 Chevy, 57 Chevy and a 48 Buick. I agree with the airflow assessment. Gotta be an electric fan but I'm about ready to try one without the shroud.

Yes, down and out is pretty wide open. Lots of room. I think there is not enough air flowing through the radiator. Maybe the shroud is restricting it.

It exhibited the same behavior with zero vacuum advance, same with advance and several different settings. The tune up ain't the problem, IMO. Thanks anyway.

But none of my other vehicles does this....and I have 3 SBC's that don't. Ram Air keeps them right at thermostat setting. I realize there is more work being done and much more heat being generated but the radiator is supposed to be able to handle 6-700 HP, according to Champion. Air flow is...

Well, the engine seems to run just fine. I can't really tell any difference yet. Hopefully, when I test for gas mileage, I will see a difference. The temperature thing has got me bumfuzzled, however. It is completely opposite of any problem I've ever had in the past and I've had a few. It...

Ok. The deed is done. I now have 12 degrees at idle, 34 at 3300 and the vacuum hooked to ported connection. It's supposed to get hot this weekend. I look forward to testing it and seeing how my temperature is and check my mileage. Initial test drive seems good. Throttle response is good, idle is...

Piece of cake. We are on the same wavelength. Thanks for the photos and advice this helps a lot.

Ok. You guys have convinced me I need to alter my mechanical advance curve. Are there articles showing how to do that? Looks like I have to lock in about 5-7 degrees of the initial mechanical advance. That will get me to about 12 - 14 degrees initial with my 34 degrees at 3300 remaining...

Well, it is 7 with the vacuum disconnected. When you add 12-13 degrees to it, I'm good.

I'm running electric fan and that is all I can use. Thanks for the link. I will read it later and experiment with the curves.This is what I needed as all my previous experience was with SBC's. The vacuum can on the unit I installed today is adjustable. The previous one was not. I usually use...