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When you want to drive fast whit a high powered engine a 3.77 ratio is good.
Engine's whit a lot of Hp the torque come's in whit 2000-6000 rpm.but are needed to come to the high speed .
Whit the high gear ratio , it's not relax to stop and go into a traffic jam.

When you choice is a lower HP engine you cannot drive's it really faster than 250km/h

1/2 hour of traffic jam is not unusual in my country.
I have the 3.77 gearing and I have not experienced any trouble at any speed in any gear and in any kind of traffic. I use my Pantera a lot and twice to France (from Denmark). Tell me what I should look for of problems..... I should mention I have a 393" stroker now but with my standard 351c I did not experience any problems either ever!

I can only recommend it and I usually only shift up to 3rd or 4th on country roads (80km/h) and 5th is a blessing on the highway and keeps the rpm's down to about 3000 at 150km/h
I have the Ford 400 stroked 434. I had mind changed to a 3.44. It is a joy to drive. Ive got 434ftlbs of tq at 2000 rpm so i needed to drop the rpm.

Before, 1st gear was absolutly useless. 60mph was way too much rpm.

Now 1st is in a perfect range and 60mph is is just a little over 2000rpm. Perfect range for this engine.
The worries are overblown, I have had 5.38's in a hot rod truck, 4.11's to higher gears like the 3.44 mentioned, my car weighs 2800 pounds, the difference between this gear and the stock is I shift after I exit the intersection instead of have way through it. I REALLY like it!! I also have a 393 stroker 285x35x18 that's 25.9" in diameter so my original back tire was a 305x50x15 27" in diameter, i" taller.

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