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Swapping to an aluminum radiator is often just a Band-Aid covering for neglected tuning or airflow issues. Adding an electric fan or fans will increase the electrical load on the low amperage output alternator and put additional load on 50+ year old factory wiring. Both of those are negatives...

I wrote this on my blog (mopowergarage.blog) about radiators, but the same overheating problems occur. The Truth About Mopar Radiators: Overheating Myths and the Real Fix Published by Christopher J. Holley | Mopar History & Tech | June 2025 For decades, enthusiasts have repeated the same...

I recently purchased a '68 Road Runner, and for the first time ever, there was a broadcast sheet underneath the rear seat. The backside was showing, and it had 413 RM23 H4X written on it. I carefully removed the sheet from the springs and turned it over to find a completely blank broadcast...