Will any of the newer automatics fit behind the 300 six in a 1974 f100?

Asked by Sep 07, 2013 at 12:44 PM about the 1974 Ford F-100

Question type: Car Customization

Truck currently has a C6, which is three speed.  Was considering replacing with a newer
5 speed.
Thanks

3 Answers

24,225

You have a rare transmission. A small Bell housing C-6 is hard to come by highly desirable to some enthusiasts because of it's durability and it's easy to trick out. 5 speed manual? You could but if it's fuel mileage your're after, buy a small car. You could install an Over-and-Under splitter unit (for about $1200) 5 speed auto? You'd have to change out everything but the long block and add the electronics to handle it.

1 of 1 people found this helpful.

Thanks! Not so much the fuel mileage, although any improvement would be an extra. If I purchase this truck, I would use it to pull a boat/trailer (about 3500-4000 lbs} and thought the extra gears would help getting up to speed and less wear and tear on the engine and transmission. I do understand the C6 is ultra strong. I'm also told the 300ci six should have no problem pulling the combo (3.50 rear end). Now to decide if I want to pay the price for this truck.

24,225

I used to pull a Jalopy race car, trailer and gear with my 77 Econoline - 300 six and C4 tranny. It'll pull it - won't win any speed contests but it will pull it anywhere you want to go.

1 of 1 people found this helpful.

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