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C6 replacement |
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av8or55 
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Joined: 20-November-2020 Location: Surrey BC Status: Offline Points: 51 |
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 Topic: C6 replacementPosted: 24-March-2022 at 4:09AM |
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I’m thinking of future projects for my Torino. I drove it for the first time on the highway since I purchased it the other day and although it ran well, I started thinking about options to replace the C6 with a transmission with overdrive.
Does anyone have any information on what transmissions are available that bolt to the 390 and can provide better highway driving?
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“Speed costs....how fast do you want to spend?”
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Inkara1
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Joined: 17-November-2021 Location: Ridgecrest, CA Status: Offline Points: 172 |
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Posted: 24-March-2022 at 4:44AM |
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That's going to be tough because the FE bolt pattern is different than the small-block or big-block patterns, so the AOD won't bolt up.
You could get a Gear Vendors overdrive unit to add to the C6, but it'll cost you.
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1972 Gran Torino station wagon, light blue, 351C 2V, prior owner upgraded to 4V (2V heads), originally had a C4 but prior owner changed to C6 for some reason.
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72FordGTS
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GTS.org Admin Joined: 06-September-2005 Location: Ontario, Canada Status: Offline Points: 5599 |
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Posted: 24-March-2022 at 8:07AM |
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You are in a similar boat to me. I have a C6 with the Big Block 385 series bell housing which means no AOD (I could use an E4OD, but it's a monster). There are adaptor plates or companies that offer a replacement bell housing but both are big dollars. Here is one for an FE:
The easiest option is a Gear Vendors OD unit but it too is very pricey. The gear vendors setup is much more stout and offers gear splitting, but also only offers 0.78 overdrive. It's probably a wash cost wise between building a hi-po AOD and modding it to fit an FE vs the Gear Vendors with your C6. I will probably go with a gear vendors down the road with my car, but it's a long way off. Tht way I get to keep my bulletproof C6 and the car still has it's original drivetrain.
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Vince
1972 Ford GTS Sportsroof - Survivor, One Family car GTS.org Admin |
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72 RS 351
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Joined: 04-September-2014 Location: Knoxville TN Status: Offline Points: 2560 |
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Posted: 24-March-2022 at 8:19AM |
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I too would aim for the Gear Vendors unit, easy to adapt and very strong. I don't know the oddity of the FE bell housing pattern, but if it's similar to the normal big block, I might consider the six speed 6R80. But that is more high dollar, I estimate $3k for a combo with a used trans. That one is bullet proof compared to other OD transmissions, but the special controller is around $1300. They make adapters to use on the SBF and BBF types, and what I saw suggest the adapters are in the $700 range.
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Don
73 Ranchero "Sport 72 front end", floor shift/console, planning EFI 7000+ rpm 351-4V &4R70W 73 Ranchero GT 351C-4V &4R70W for sale later. 92 Lincoln Mark VII SE GTC, OBDII 347/4R70W |
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av8or55
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Joined: 20-November-2020 Location: Surrey BC Status: Offline Points: 51 |
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Posted: 24-March-2022 at 3:08PM |
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All great info, thanks. I’ve bookmarked the Gear Vendors site for future reference.
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“Speed costs....how fast do you want to spend?”
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