Transmission swap
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Joined: Mar 2012
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Transmission swap
I have a 1983 f150 l6 with an C6 transmission. I need to replace my transmission and i was looking at completely switching to a different one altogether. Is this a good idea? If so what would be the best to swap it to?
Cargo Master
Joined: Aug 2007
Posts: 2,558
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From: New Zealand
Are you wanting to stay with an automatic? The options all depend on your needs.
For durability you won't beat your C6, but they fall a bit short on fuel efficiency, mainly if you are driving at high speeds (having no overdrive, or locking torque converter).
That said, I swapped from a C6 to a 4-speed manual transmission & definitely gained some power, but only 1.5 mpg...... I think towing, the fuel gain would be more.
An AOD has OD, & locks up in 3rd & OD......but durability is an ongoing problem - they don't survive heavier towing or hard work, in stock form.
Personally, my advice would be don't install a stock AOD into a truck at all - my F250 originally had one & it was just too delicate.
The later E40D combines OD & better durability, but is computer controlled, & not as trouble-free as the C6.
For durability you won't beat your C6, but they fall a bit short on fuel efficiency, mainly if you are driving at high speeds (having no overdrive, or locking torque converter).
That said, I swapped from a C6 to a 4-speed manual transmission & definitely gained some power, but only 1.5 mpg...... I think towing, the fuel gain would be more.
An AOD has OD, & locks up in 3rd & OD......but durability is an ongoing problem - they don't survive heavier towing or hard work, in stock form.
Personally, my advice would be don't install a stock AOD into a truck at all - my F250 originally had one & it was just too delicate.
The later E40D combines OD & better durability, but is computer controlled, & not as trouble-free as the C6.
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