[QUOTE
So, the question is this: what period (40’s era) upgrades can be done to the Merc to improve it’s hill climbing ability? The drivetrain is rock solid on the ‘39 and on highways and surface streets, I don’t have a single complaint.
Weird request, I know, but I’m interested to hear what you guys come up with.
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Here's an example of how Marmon-Herrington did it:
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