Converting from 4 speed to auto?????

67GTCOUPE

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Dec 20, 2000

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Land of Ice and Snow

May 9, 2004

#1

• May 9, 2004

• #1

My wife doesn't drive manual tranny cars.....so I am contemplating swapping the toploader for a slushbox I know, I know.

Any way......I have a 67 with a 410hp and 400+ft/lb 351w in it......what would be the best trans to pop in and what do I need?

I figure I need a new crossmember, tranny, flexplate, converter, shifter, different top for my consol......what else???

 

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Fomocohipo

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Feb 3, 2004

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May 9, 2004

#2

• May 9, 2004

• #2

You selling your toploader??? Ive got a spare c-6 too.

 

67GTCOUPE

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Dec 20, 2000

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Land of Ice and Snow

May 10, 2004

#3

• May 10, 2004

• #3

Fomocohipo said:

You selling your toploader??? Ive got a spare c-6 too.

Click to expand...

No, I would be keeping it, along with the original motor....in my shed, in case I ever sell the car.

 

Edbert

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Jul 13, 2002

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Austin TX

May 10, 2004

#4

• May 10, 2004

• #4

Its easier to go FROM a standard to an Auto than the other way around, particularly if you don't mind leaving that extra pedal in there as a foot rest.



Your choices in an Auto are far more limited than with a standard. Assuming you don't want the hassle of a powerglide conversion you've got two hot options. Either a C4 or an AOD will have to be built-up to handle your motor. The AOD option will cost you a few hundred dollars more than the C4 for the same level of power input. The AOD of course has the extra gear but it weighs more and has more parasitic loss than the C4. Expect to pay about $2K for a built AOD that can live behind your 400+ fwhp.

Then you'll need an automatic flexplate (flywheel), block plate, torque converter, crossmember, shifter and shift linkage. All five of those items are specific to the trans you choose to use (AOD can use a C4 shifter with the right linkage though). In addition should you choose the AOD you'll need a TV cable since they are throttle-position sensitive.

You know what I think you should pick based on my sig. B&M and TCI make a drop-in AOD that can handle up to 450fwhp for less than $2K, Lentech makes the best ones and they can reach $3K with little effort.

 

Max Power

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Jul 31, 2003

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St Paul

May 10, 2004

#5

• May 10, 2004

• #5

Don't forget the cooler! Either get a radiator for an automatic or an external cooler.

 

TireSmoknWindsr

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Sep 12, 2002

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Half past whup'n some import's ass

May 10, 2004

#6

• May 10, 2004

• #6

I would personally look at some of the big racing tranny companies,B&M, etc and try to get a C-4. You lack the overdrive gear but you get a light stout package and I've always known them to be stronger than an AOD. I've saw stock C-4s hold up to 400+hp before. I'd get a built one though but it's been done.

 

ratio411

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Apr 21, 2002

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Pensacola FL

May 10, 2004

#7

• May 10, 2004

• #7

Easy swap.

Auto radiator
Fluid lines (make 'em yerself)
No driveshaft mods if you use a C4 or FMX
No crossmember mods if you do as above
Cable operated aftermarket shifter, unless you just have to have stock style.
Auto trans starter
When you disconnect the linkage, the clutch pedal will stay against the floor pan. Just lift the carpet up, drop the pedal, put the carpet down... it will hide nicely.
If you want a larger brake pedal, take off the stock pedal pad and store it away, weld the left side of an auto pedal that you cut from a donor car, to the side of the brake pedal, then install the larger pedal pad from the donor car. When you ever switch back, grind the weld apart and re-install smaller pedal pad.

 

U

usedtobe 67p51d

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Jul 8, 2003

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let's tear up golfcourses and build race tracks!

May 10, 2004

#8

• May 10, 2004

• #8

Dude step up to the plate! tell her fine, drive an auto....a honda auto. all of that power of your will cost major $$$ to keep a auto happy or if she's got to have a 'stang get her one! with a AUTO and all of you guy's telling him how to rape his car and stick in an auto go back to your whineoolers and shut up sheesh!

 

D

D.Hearne

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Sep 29, 2000

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south louisiana

May 11, 2004

#9

• May 11, 2004

• #9

It would be easier and cheaper to just teach her to drive a stick.You could even let her practice on you.

 

ratio411

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Apr 21, 2002

3,870

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May 11, 2004

#10

• May 11, 2004

• #10

D.Hearne said:

: ...You could even let her practice on you...

Click to expand...

 

67GTCOUPE

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Dec 20, 2000

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Land of Ice and Snow

May 11, 2004

#11

• May 11, 2004

• #11

usedtobe 67p51d said:

Dude step up to the plate! tell her fine, drive an auto....a honda auto. all of that power of your will cost major $$$ to keep a auto happy or if she's got to have a 'stang get her one! with a AUTO and all of you guy's telling him how to rape his car and stick in an auto go back to your whineoolers and shut up sheesh!

Click to expand...

Well we are lokking at a 94 GT convertible that is mint and auto!

 

U

usedtobe 67p51d

New Member

Jul 8, 2003

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let's tear up golfcourses and build race tracks!

May 11, 2004

#12

• May 11, 2004

• #12

glad to see that...however if you stick an auto in your car you'll still be a wuzbag : If I was savey enuff to add a "smiles" here it would be "owned"

 

67GTCOUPE

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Dec 20, 2000

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Land of Ice and Snow

May 11, 2004

#13

• May 11, 2004

• #13

usedtobe 67p51d said:

glad to see that...however if you stick an auto in your car you'll still be a wuzbag : If I was savey enuff to add a "smiles" here it would be "owned"

Click to expand...

Actually we are buying a 1994 GT convertible.....AUTO

SOOOOOOOO...my 4 speed stays in the 67!!!!!!!

 

U

usedtobe 67p51d

New Member

Jul 8, 2003

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let's tear up golfcourses and build race tracks!

May 12, 2004

#14

• May 12, 2004

• #14

glad to help keep a marriage happy.