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Old 11-06-2005, 08:31 AM
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64 ford Galaxie wagon, 390 FE, transmission

I'm in serious need of some advise and an automatic transmission choice and rear end ratio for an FE motor with 525 lbs of torque at just over 6000 rpm. No racing but want strong accelleration at least up to 60 or so, and decent mileage. I've had all sorts of advise, from the original c4 to c6 to overdrive. The car will have a 4 bar in the back so it will handle the power. My present thought is a c6 with a 4/11 but I know that will not be at all good for mileage. How about overdrive? Thanks for whatever you guys can give me..Ray

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Old 11-06-2005, 09:55 AM
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Gear vendors OD

I think the gear vendors od unit would be a good answer for you..Had one at one time behind a C-6 and a 460 and it worked well..

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Old 11-06-2005, 04:27 PM
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Quote:
Originally Posted by raymrajak
I'm in serious need of some advise and an automatic transmission choice and rear end ratio for an FE motor with 525 lbs of torque at just over 6000 rpm. No racing but want strong accelleration at least up to 60 or so, and decent mileage. I've had all sorts of advise, from the original c4 to c6 to overdrive. The car will have a 4 bar in the back so it will handle the power. My present thought is a c6 with a 4/11 but I know that will not be at all good for mileage. How about overdrive? Thanks for whatever you guys can give me..Ray

525 lbs of torque at 6000 rpm and it is NOT a racing engine? You're kidding right?

FEs never had a C-4 period.

A built C-6 with Gear Vendors would be good and probably the only thing that would live behind it.

With that much camshaft and compression DECENT MILEAGE is irrelevant. If you get 7 @ 60 mph in overdrive you will have a winner. The engine will be sick below 3000 rpm and a ***** to drive.

I am answering it one time anyway.... LOL.

Last edited by Crosley; 11-06-2005 at 05:08 PM. Reason: inappropriate comment
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Old 11-09-2005, 02:38 AM
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Some people will likely scoff, but it can be done

AOD's, and especially 4R70W's, can be built to reliably
handle that kind of power.

http://www.lincolnsonline.com/article111.html
http://www.lincolnsonline.com/article80.html

And you can get adapters for those to fit an FE.

That's some info for starters - do a search for
trans adapter AOD to FE, or check out the
numerous Ford AOD builders around, I know
a couple of them have adapters.

A Gear Vendors for behind a C-6 would be
a very stout combo, but the OD in the GV
unit isn't as high as either of the Ford OD
trans, not that you can't set up your
overall gearing to work well with it.

I would suspect that even with that kind of
power, it's not a real high rpm engine?

Here's a mph calculator (you'd have to find
the GV overdrive ratio on their website)
http://www.angelfire.com/fl/procrastination/rear.html

The AOD od ratio is .67 and they have a
narrow ratio so you can run relatively
deep gears and still have good hiway rpms.
A 4R has .7 OD and a wider ratio gearset,
so you are better off there with a couple
steps higher gears. For instance, an AOD
with 4:10's is about like a 4R with between
3:55's and 3:73s as far as overall low gear ratio
and road speed per rpm goes.

With a real torque engine, you may be better
off with the little bit wider gear ratio of the
4R. A C6 is a fairly close ratio trans, too.
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Old 11-09-2005, 08:07 AM
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525ft/lbs/, 3000lb car

with that much torque a C-6 and 3.00 gears will be a hell of a thrill ride..... "burn'em" in second....."white knuckles on wet roads"...and 3,000rpm =60+mph

what is so great bout' Ford rears

junk yard 9" 3.00 pumpkin to try =<$75?
junk yard 9" 3.50 out of a pick up to try =$75? (may find one with posi)

Last edited by red65mustang; 11-09-2005 at 08:20 AM.
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Old 11-09-2005, 06:24 PM
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Back in 64 I had a 64 Galaxie 500 XL 390 4 speed
and it pushed close to 4000 lbs as I recall.

Trouble was, my 390 was just a 300 horse,
and I was not yet initiated or educated into
improving on that.

ONE of the many muscle cars I wish I still had!
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Old 11-09-2005, 08:52 PM
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with that power and torque a 3.25 gear and 4 or 5 speed manual tranny would be fun.
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Old 11-10-2005, 04:11 AM
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macx, your right, 64'=4,000lbs., another reason to forget about mpg

so I'll reverse my choices:
try junk yard 3.50's
try junk yard 3.00
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Old 11-10-2005, 04:26 AM
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I think 3:50 to 3:73 would be a great street gear,
depending on your trans & what low gear ratio
it has.

A C6 or AOD has a fairly high first gear so you
could go toward the lower end of that range,
and a 4R70W has a lower first gear so you
would maybe like a 3:50's gear better.

If you go C6 without a gear vendor overdrive,
then maybe 3:25 range would be better so
you don't tach too high on the road, unless
you don't do much road driving.
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