Need help on selecting a transmission
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Cross-Country
Joined: Jan 2011
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Need help on selecting a transmission
Here is what I have:
Motor: Roller 393w (carb)
Rear-end: From a 1995 SC Thunder Bird
I was looking at the E40D but curious how hard it would be to set up because it is electric. Otherwise I was looking at the C4 or C6. I am unsure what the gears are in the rear-end, motor should have 400-475hp.
Motor: Roller 393w (carb)
Rear-end: From a 1995 SC Thunder Bird
I was looking at the E40D but curious how hard it would be to set up because it is electric. Otherwise I was looking at the C4 or C6. I am unsure what the gears are in the rear-end, motor should have 400-475hp.
Fleet Mechanic
Joined: Aug 2010
Posts: 1,994
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From: Morgan Hill, CA
There are harnesses available for the E4OD at places like this: PCS - Powertrain Control Solutions - Transmission Harnesses
A quick look at the schematic does leave a few questions. The C4 & C6's are pretty much self contained so it'd be an easier installation. You'll have to do your homework to pick the right flex plate and starter.
Dan
A quick look at the schematic does leave a few questions. The C4 & C6's are pretty much self contained so it'd be an easier installation. You'll have to do your homework to pick the right flex plate and starter.
Dan
Logistics Pro
Joined: May 2010
Posts: 3,793
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From: Austin
Hey Gibby,
I've got a 1950 F1 with a 351 in it. I went with an AOD & it's been a truly horrible expensive experience. If I had it to do over I'd put a 5 speed manual in there in a heart beat.
AOD's are not computer controlled - they rely on a wire throttle valve linkage to be set right - If the pressure is wrong you fry the transmission. It takes extremely small adjustments of the throttle valve to get the shifts right. Major PITA. You also have to have the right governor in there & if you are making some decent horsepower you have to upgrade the internals to the later AODe or similar. It's nice to know your rear gear ratio so you can determine if your cruising RPM's at 65 or so are ok.
Good luck over there - I'm going to personally come out to Arizona
& kick your tires if pick an AOD - in a totally friendly way - just saying.
Ben in Austin
I've got a 1950 F1 with a 351 in it. I went with an AOD & it's been a truly horrible expensive experience. If I had it to do over I'd put a 5 speed manual in there in a heart beat.
AOD's are not computer controlled - they rely on a wire throttle valve linkage to be set right - If the pressure is wrong you fry the transmission. It takes extremely small adjustments of the throttle valve to get the shifts right. Major PITA. You also have to have the right governor in there & if you are making some decent horsepower you have to upgrade the internals to the later AODe or similar. It's nice to know your rear gear ratio so you can determine if your cruising RPM's at 65 or so are ok.
Good luck over there - I'm going to personally come out to Arizona
& kick your tires if pick an AOD - in a totally friendly way - just saying.
Ben in Austin
Lead Driver
Joined: Aug 2006
Posts: 8,093
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From: Brentwood, TN
Ben, it's a shame that you have had such a negative experience with your AOD...don't blame the TV cable adjustment for all your problems though, there are many AODs in service today without having the issues that you describe. Maybe you could find a better transmission guy in your area to help you out.
Logistics Pro
Joined: May 2010
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From: Austin
Hey Charlie,
I'll do a post mortem when my AOD situation is finally resolved.
I'm on my 4th shop at the moment & 3rd AOD. My experience is that
they are very sensitive - I would look for something less sensitive that doesn't depend on the fixed wire linkage.
Part of my issue is the higher geared rear end causes it to shift
way early. It's just not designed to support that gearing & a fairly
healthy 351W. I'll get there - just saying I think there has to be an easier or better approach. A nice manual 5 speed sounds really good about now. Maybe I'll love the AOD's - just not at the moment.
I think AOD's were phased out in the 80's - car companies have made a lot of advancements in transmissions since these were invented. The Overdrive Servo Band is 2 inches wide vs 1.5 inches in the AOD so it doens't slip off at speed, Replacement valves come with nice sonnax "O rings" to help with shifting, rear lube style & much harder input shaft, etc.
Ben in Austin
I'll do a post mortem when my AOD situation is finally resolved.
I'm on my 4th shop at the moment & 3rd AOD. My experience is that
they are very sensitive - I would look for something less sensitive that doesn't depend on the fixed wire linkage.
Part of my issue is the higher geared rear end causes it to shift
way early. It's just not designed to support that gearing & a fairly
healthy 351W. I'll get there - just saying I think there has to be an easier or better approach. A nice manual 5 speed sounds really good about now. Maybe I'll love the AOD's - just not at the moment.
I think AOD's were phased out in the 80's - car companies have made a lot of advancements in transmissions since these were invented. The Overdrive Servo Band is 2 inches wide vs 1.5 inches in the AOD so it doens't slip off at speed, Replacement valves come with nice sonnax "O rings" to help with shifting, rear lube style & much harder input shaft, etc.
Ben in Austin
Lead Driver
Joined: Aug 2006
Posts: 8,093
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From: Brentwood, TN
Yeah I have a few of them and haven't run into the issues that you describe...then again I am running 3.0 gears. I just had an AOD built with 4R70W internals, more juice in the low gears and still at a 0.62:1 in the OD range. A local guy here in SoCal builds mine, he is in the Over The Hill Gang and had a shop for 30+ years. He also routes the TC lockup out the external connector so you can operate it manually.
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Cross-Country
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Currently I have a freshly rebuilt wc T-5 just thinking the c6 will hold more power. And cheaper than a tko
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From: Littleton, New Hampshire
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I am going to suggest the C6 with that much HP. The C4 doesn't take as much horsepower to turn, but the C6 will handle much more horsepower. I am putting a '55 together that has a 429 and C6. I am planning on running 3.89's with a limited slip in a 9 inch ford. Those may be too high, but if they are I will put the unit in my 70 Mustang and go to 3.50's.
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Joined: Feb 2005
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From: Upper Left Coast
You'll get an advantage using an E4OD but you WILL need something like the Baumann controller mentioned above. It's the one I have. It's completely programmable using a laptop.
Mine came out of an F450 superduty (and they're all basically the same internally) so it's unlikely you'll over-load it if you use a good cooler.
I haven't gotten mine installed yet but the E4OD can be built to handle any HP your engine can muster.
Also, with the OD (0.71:1) and the locking torque converter (assuming you can keep your "foot out of it"), you'll probably get pretty good mileage cruising on the highway.
Here's mine sitting in my 55 F-600 frame with a 292 Y-block bolted on the front and the Superduty parking brake on the back!!
Mine came out of an F450 superduty (and they're all basically the same internally) so it's unlikely you'll over-load it if you use a good cooler.
I haven't gotten mine installed yet but the E4OD can be built to handle any HP your engine can muster.
Also, with the OD (0.71:1) and the locking torque converter (assuming you can keep your "foot out of it"), you'll probably get pretty good mileage cruising on the highway.
Here's mine sitting in my 55 F-600 frame with a 292 Y-block bolted on the front and the Superduty parking brake on the back!!
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