I don’t know if anyone else noticed this, but the displacement numbers are wrong, particularly for Pontiac’s 1977 Trans Am. The stock engine should be 6,557 cubic centimeters, but it’s only 6,162 in the game.
I noticed when I transferred a tune from forza 6, which shows the correct displacement of a modified block to 7.2 liters for a 455 ci engine, but fudges it up in horizon 3 and shows it as 7.0 liters.
Ugh. Nevermind, I think I figured out the discrepancy. I think I had swapped out the stock engine for a 6.2 liter, that I then modified.