Who makes good overdrive units

bad68coupe

New Member

Jul 18, 2006

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Richardson, TX

Nov 15, 2006

#1

• Nov 15, 2006

• #1

who makes good overdrive units to bolt up to my C4 and does anyone have any experience with them?:SNSign:

 

allcarfan

The Answer Man

Founding Member

Apr 8, 2001

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North Atlanta

Nov 15, 2006

#2

• Nov 15, 2006

• #2

The only ones that I know of are Gear Vendors. It is $3000 for the unit. You would be better off swapping to an AOD

 

dbfarr

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Sep 17, 2005

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Boise ID

Nov 15, 2006

#3

• Nov 15, 2006

• #3

3000 Smackeroos

Ahhhhh, the magic number. why is it that nearly every kit is just above, below, or right at this number....

 

1320stang

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Nov 13, 1998

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Edmond, Oklahoma

Nov 15, 2006

#4

• Nov 15, 2006

• #4

There's another company as well, I can't remember the name, but they're about the same price so the point is kinda moot. I agree, get an AOD.

 

6

65mistress

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Aug 17, 2004

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Generica USA

Nov 15, 2006

#5

• Nov 15, 2006

• #5

Well, you could always find the old O/D units from the 50's cars, you could potentially have a 6 speed auto. My buddy had one of those in his '57 Fairlane, it was a switch and this thing that you had to pull, and that engaged the O/D, I think that it went on the front of the trans. I'll get more information and see if it's compatible with the C4, I think that it was for the old cruise-o-matics.

 

1320stang

Founding Member

Nov 13, 1998

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Edmond, Oklahoma

Nov 15, 2006

#6

• Nov 15, 2006

• #6

There were also some O/D unit that went in front of the third member.

 

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66HertzClone

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Aug 24, 2004

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Central New Jersey

Nov 15, 2006

#7

• Nov 15, 2006

• #7

I have one of the GearVendor units in my car and love it. I would have needed an Lentech or similar cost trans in order to handle the power of my stroker, I would have to replace the JetCoated headers with a set that would work with the AOD. Once I added up the costs of the AOD, headers, and all of the other parts required, the GV was less money. Mine at the time was $2495, I chose to have another driveshaft made to the correct length rather than shorten the original. I had modify the trans tunnel so the unit would clear the floor, the depression in the floor just after the shifter was pounded up a little, other than that no other mods.

I mounted the activation switch up and to the right of the dimmer switch, once on the highway, I just tap this switch and the over drive kicks in. Cruising at 70 or so, I'm turning about 2200 rpms, not bad with a 3.55 rear. There is a photo of the unit prior to the install sitting on my workbench somewhere in my CarDomain pages. It has never given me any trouble at all, and I installed it in my garage without a lift by myself.

 

bad68coupe

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Jul 18, 2006

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Richardson, TX

Nov 15, 2006

#8

• Nov 15, 2006

• #8

what AOD would ya'll recommend

 

allcarfan

The Answer Man

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North Atlanta

Nov 16, 2006

#9

• Nov 16, 2006

• #9

bad68coupe said:

what AOD would ya'll recommend

Click to expand...

How much do you want to spend? Big money is going to be an Art Carr or Lentech. Or, you can find a good, local builder and have one that will handle 600hp for less than $1000

 

bad68coupe

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Jul 18, 2006

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Richardson, TX

Nov 16, 2006

#10

• Nov 16, 2006

• #10

allcarfan said:

How much do you want to spend? Big money is going to be an Art Carr or Lentech. Or, you can find a good, local builder and have one that will handle 600hp for less than $1000

Click to expand...

My horsepower will be more like 300-350

 

5

5.0ina66

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Jun 6, 2003

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Ohio

Nov 17, 2006

#11

• Nov 17, 2006

• #11

bad68coupe said:

My horsepower will be more like 300-350

Click to expand...

That changes things IMO. I'd say you could use a rebuilt, shiftkitted AOD.

 

allcarfan

The Answer Man

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North Atlanta

Nov 17, 2006

#12

• Nov 17, 2006

• #12

I am with 50ina66

if you are making 300-350 hp...id just have a rebuilt AOD with a nice valve body. Dont really need anything special