New Trans For A 65 Mustang

J

Jim Pawloski

Member

Apr 17, 2012

45

1

9

Jun 24, 2014

#1

• Jun 24, 2014

• #1

Would like to keep it automatic, but I'll probably be putting 500-600 hp at the crank when this build is done. Would my C4 trans be able to keep up after a rebuild? Or should I move up to a C6? Recommendations welcome!

 

J

Jim Pawloski

Member

Apr 17, 2012

45

1

9

Jul 4, 2014

#2

• Jul 4, 2014

• #2

bump

 

rbohm

Founding Member

Apr 12, 2002

6,698

550

204

tucson,az

Jul 4, 2014

#3

• Jul 4, 2014

• #3

a properly built C4 can handle the power you intend to make. but it wont be just a "rebuild". you are going to have to upgrade the clutches, as well as the bands, and depending on the materials used, some of the internal rotating parts as well. also you are going to have to upgrade the valve body, the input shaft, etc.

by the way, you will have to do many of the same upgrade with the C6 as well.

 

RacerJames

Active Member

Mar 21, 2014

165

23

39

Kingman AZ

Jul 5, 2014

#4

• Jul 5, 2014

• #4

I once worked with a guy who ran an Aamco trans shop. He had a Factory 5 Cobra which he ran 9s with at Rocky Mountain Raceways in SL. It was a 5.0 with a paxton setup. He chose to run the C4 trans. Seemed to work fine for him.

 

flstang65

10 Year Member

Dec 6, 2007

1,484

135

94

SE Georgia

Jul 10, 2014

#5

• Jul 10, 2014

• #5

The C6 also takes about 50ish or so horse power just to turn the thing. Super heavy too.

 

65ShelbyClone

Founding Member

Sep 9, 2000

4,675

38

119

Antelope Valley, SoCal

Jul 11, 2014

#6

• Jul 11, 2014

• #6

The AOD is an option that has overdrive.

 

J

Jim Pawloski

Member

Apr 17, 2012

45

1

9

Jul 12, 2014

#7

• Jul 12, 2014

• #7

I'm trying to find a performance rebuild kit for a 65 C4. I guess in 66 they redesigned it so the bell housing bolts to the case, not the pump. I don't know if that changes anything internally.

 

flstang65

10 Year Member

Dec 6, 2007

1,484

135

94

SE Georgia

Jul 20, 2014

#8

• Jul 20, 2014

• #8

I would go with an AOD

 

J

Jim Pawloski

Member

Apr 17, 2012

45

1

9

Jul 20, 2014

#9

• Jul 20, 2014

• #9

Yeah but I don't want to spend 2500 dollars unless I have to. That's why I'm hoping someone has a good lead on a performance rebuild kit for a 65 c4.

 

J

Jim Pawloski

Member

Apr 17, 2012

45

1

9

Jul 20, 2014

#10

• Jul 20, 2014

• #10

Update: So I guess the only thing that's different between a 65 and 66 c4 trans is they changed from a dual range transmission (small dot and big dot) to the standard PRND21 shifter. You can swap pieces back and forth but you have to have a shifter and bezel from a 66 and newer.

Source: http://www.mustangandfords.com/how-...ild-a-better-c4-transmission/photo-gallery/#9

 

84Ttop

They make new pistons every day, so why worry?

5 Year Member

Jul 2, 2009

5,222

3,254

204

South Jersey

Jul 22, 2014

#11

• Jul 22, 2014

• #11

rbohm said:

a properly built C4 can handle the power you intend to make. but it wont be just a "rebuild". you are going to have to upgrade the clutches, as well as the bands, and depending on the materials used, some of the internal rotating parts as well. also you are going to have to upgrade the valve body, the input shaft, etc.

by the way, you will have to do many of the same upgrade with the C6 as well.

Click to expand...

This answer is spot on!

 

G

Grabber70Mach

Member

Jul 6, 2003

305

0

17

Indian Head, MD

Jul 22, 2014

#12

• Jul 22, 2014

• #12

I'd go with the AOD, check out Dan at Silverfox or click click racing.
http://www.clickclickracing.com/

 

flstang65

10 Year Member

Dec 6, 2007

1,484

135

94

SE Georgia

Jul 24, 2014

#13

• Jul 24, 2014

• #13

You can get good used Aod's for cheap.

 

rbohm

Founding Member

Apr 12, 2002

6,698

550

204

tucson,az

Jul 24, 2014

#14

• Jul 24, 2014

• #14

flstang65 said:

You can get good used Aod's for cheap.

Click to expand...

it will still need upgrading though.

 

J

Jim Pawloski

Member

Apr 17, 2012

45

1

9

Jul 25, 2014

#15

• Jul 25, 2014

• #15

After talking with Performance Automatic, they don't have a rebuild kit that will handle that power for a pre 1970 c4. Looks like I got to buy a new trans anyhow. I'll look into those AODs. Thanks.

 

rbohm

Founding Member

Apr 12, 2002

6,698

550

204

tucson,az

Jul 25, 2014

#16

• Jul 25, 2014

• #16

Jim Pawloski said:

After talking with Performance Automatic, they don't have a rebuild kit that will handle that power for a pre 1970 c4. Looks like I got to buy a new trans anyhow. I'll look into those AODs. Thanks.

Click to expand...

be sure to upgrade the input shafts on an AOD, the stock ones snap quite easily when the power level starts reaching beyond 350hp. also with the AOD, NEVER do full throttle up shifts into O/D as you will burn out the O/D band.

 

J

Jim Pawloski

Member

Apr 17, 2012

45

1

9

Jul 26, 2014

#17

• Jul 26, 2014

• #17

Yeah, I think I'm going to just rebuild the C4 I have now until I can afford the supercharger, then I'll get a new trans when I push over 550 hp