Indy heads single water crossover /single plane manifold.

Initial timing is set at 8 degrees with MSD taking care of the firing of the engine. A none vacuum advance style MSD distributor (Number eluding me at the moment) with the 28 degrees curve set by the correct color spring in the distributor with it breaking over (flat lining) @ 5500 RPM giving me 36 degrees total timing. I am not currently running a hood as my 50 year old perfect hood has not seen the saw yet. I hate to do it but it beats trying to answer the wife on how much is the monster going to eat today question at breakfast!!!! The engine had been running at 215 to 220 going down the interstate as I was taking car on a 80 mile run trying to get FI Tek set to engine running parameters. Tried driving in town and 220 plus was not good. I had high quality 185 degree thermostat in the car but removed it today......I advanced timing slightly more to 8 degrees as it was at 0 degrees (distributor lockdown loose) again. Engine started great at 8 degrees and Car ran flawlessly to town and back at 170 degrees.....edging up at red light and small city driving......to fuel up the beast. After eating up $75 dollars of super unleaded the car ran 170 all the way back home. (More on this later)
I will post more pictures in the members rides. The car should be a real beast as I spared no expense on my last car on .....which I had to Pinky swear to. The timing being off was a real contributor to heat problem. I did a oil & filter change just because I saw some really fine metalics in the oil 140 miles total on fresh everything.... No use in mentioning any brand of oil we just need to let that dog sleep ...no use in waking him up for any reason.

Electric fans have their place on my 2 classics as Neither my 53 Dodge truck with the 318 nor my Duster with the 410 has mechanical fans due to a room problem. I need to let that dog sleep too!!!! My theory is keep working on it until you solve the puzzle. Everyone knows when you grab a part from this company and try and mix it with some other manufacturers company everything presents its own set of problems...... especially true when you resto mod these projects.

The water pump pulleys came from ??????? Something I parted out, hung on to, I have sold and given tons of original parts away over the years to other Mopar fans in need. Years back I was parting out anything Dodge I could get my hands on. Anything LA....truck, car .......made no difference
I am fairly sure they are truck engine parts as I was hoarding 360 stuff for my own use...... knowing this day would come. View attachment 1715942758 View attachment 1715942757

What's hiding on the dual belts.....water pump and alternator belts are both tightened up by one adjustment....... I will dig a picture up
Gett'n hot at highway speeds is a coolant flow issue for sure, as you have all the air you want at higher speeds.
You need to take a serious look at your water pump drive ratio.
Let me guess you have an overdrive transmission?