C-4 or AOD?

ALS85GT · 10-26-2001, 02:02 PM

Hey guys, I have an 85 GT using the fact AOD which slips. I am considering switching to a c4 since I don't need the OD and I've heard it's a stronger transmission. Any thoughts would be welcomed....

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85GT 5.0 was CFI converted to Holley 650. Hooker full length headers. Weiand Stealth manifold. 86 roller motor, crane 1:7:1 alum rocker arms(roller). Summit double roller timing chain. HD oil pump, stock bottom end. Mallory Hi-Fire ignition. Accell coil and Ford Motorsport 9mm wires. 93'8.8 posi. Working on getting 4:10s. AOD w/B&M shift kit. No figures yet, still working on it.

6T9PONY · 10-26-2001, 02:09 PM

Get a good, built, C4. It's lighter and stronger than the AOD. Put a good stall to match your engine and a shift kit, preferably TransGo if you have the $$$. If not go with a B&M, they're a little less than $30 and I'd say worth the money. The TransGo's are well above a hundred I think.

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Previously "BennyBoy"
'69 Coupe with 351W-I rolled it 8/8
Edelbrock RPM intake, Edelbrock RPM cam, Edelbrock 750 cfm carb, Hedman headers, 2 1/2" pipe, glasspacks, C4: shift kit, 9" Currie: Trac-Lok 3.70s, 290hp-stock heads

Starting Project "2ND COMING": 1969 Fastback

ALS85GT · 10-26-2001, 02:28 PM

Is it true that one could hold the shifter in 1st w/the C4? Basically manual shifting? Or you you still need a manual valve body?
Thanks... And should it bolt up to my set up OK? ..........

------------------
85GT 5.0 was CFI converted to Holley 650. Hooker full length headers. Weiand Stealth manifold. 86 roller motor, crane 1:7:1 alum rocker arms(roller). SSI 220@.050/498 Roller cam. Summit double roller timing chain. HD oil pump, stock bottom end. Mallory Hi-Fire ignition. Under drive pulleys. Accell coil and Ford Motorsport 9mm wires. 93'8.8 posi. Working on getting 4:10s. AOD w/B&M shift kit. No figures yet, still working on it.

6T9PONY · 10-26-2001, 04:34 PM

You can hold 1st and 2nd with the C4. It should bolt up with your engine ok. But you may need new tranny mounts and maybe a bellhousing. Not sure if they are compatible between AOD/C4. Someone else will for sure know on here though.

------------------
Previously "BennyBoy"
'69 Coupe with 351W-I rolled it 8/8
Edelbrock RPM intake, Edelbrock RPM cam, Edelbrock 750 cfm carb, Hedman headers, 2 1/2" pipe, glasspacks, C4: shift kit, 9" Currie: Trac-Lok 3.70s, STOCK HEADS SUCK!
Starting Project "2ND COMING": 1969 Fastback

84_GT350 · 10-26-2001, 04:52 PM

I think you'll need a new flexplate too. If I remember correctly, the C4 flexplates have a different number of teeth. I'm planning on the same swap. You'll need a kickdown linkage too. AODs use a TV rod and C4s use an old-fashioned kickdown.

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1984 1/2 GT350 (#842 Hatchback w/ T-tops), 302HO, Comp cams Xtreme Energy cam, Carter 625cfm carb, Weiand Stealth intake, MSD distributor, MSD coil, FMS 9mm wires, 1 5/8" MAC unequal shorties, 2 1/2" MAC Prochamber H-pipe, Flowmaster 2 chambers, KYBs, 16"x8" 4 lug Cobra Rs, Falken 245/45ZR16s

So I pushed it up to 110,
That flathead motor was about to give in,
I crossed my fingers and prayed to the lord,
Don't let me down you fuct up ford!"

"5-Oh Ford" by The Reverend Horton Heat

ALS85GT · 10-26-2001, 05:15 PM

Thanks but actually my AOD uses the old style "fixed" kick dn. One less item I guess.

10-26-2001, 02:02 PM	#1
ALS85GT Registered Member Join Date: Aug 2001 Location: Miami, Fl, USA Posts: 69	C-4 or AOD? Hey guys, I have an 85 GT using the fact AOD which slips. I am considering switching to a c4 since I don't need the OD and I've heard it's a stronger transmission. Any thoughts would be welcomed.... ------------------ 85GT 5.0 was CFI converted to Holley 650. Hooker full length headers. Weiand Stealth manifold. 86 roller motor, crane 1:7:1 alum rocker arms(roller). Summit double roller timing chain. HD oil pump, stock bottom end. Mallory Hi-Fire ignition. Accell coil and Ford Motorsport 9mm wires. 93'8.8 posi. Working on getting 4:10s. AOD w/B&M shift kit. No figures yet, still working on it.

10-26-2001, 02:09 PM	#2
6T9PONY All about the Windsor. Join Date: Feb 2000 Posts: 2,052	Get a good, built, C4. It's lighter and stronger than the AOD. Put a good stall to match your engine and a shift kit, preferably TransGo if you have the $$$. If not go with a B&M, they're a little less than $30 and I'd say worth the money. The TransGo's are well above a hundred I think. ------------------ Previously "BennyBoy" '69 Coupe with 351W-I rolled it 8/8 Edelbrock RPM intake, Edelbrock RPM cam, Edelbrock 750 cfm carb, Hedman headers, 2 1/2" pipe, glasspacks, C4: shift kit, 9" Currie: Trac-Lok 3.70s, 290hp-stock heads Starting Project "2ND COMING": 1969 Fastback

10-26-2001, 02:28 PM	#3
ALS85GT Registered Member Join Date: Aug 2001 Location: Miami, Fl, USA Posts: 69	Is it true that one could hold the shifter in 1st w/the C4? Basically manual shifting? Or you you still need a manual valve body? Thanks... And should it bolt up to my set up OK? .......... ------------------ 85GT 5.0 was CFI converted to Holley 650. Hooker full length headers. Weiand Stealth manifold. 86 roller motor, crane 1:7:1 alum rocker arms(roller). SSI 220@.050/498 Roller cam. Summit double roller timing chain. HD oil pump, stock bottom end. Mallory Hi-Fire ignition. Under drive pulleys. Accell coil and Ford Motorsport 9mm wires. 93'8.8 posi. Working on getting 4:10s. AOD w/B&M shift kit. No figures yet, still working on it.

10-26-2001, 04:34 PM	#4
6T9PONY All about the Windsor. Join Date: Feb 2000 Posts: 2,052	You can hold 1st and 2nd with the C4. It should bolt up with your engine ok. But you may need new tranny mounts and maybe a bellhousing. Not sure if they are compatible between AOD/C4. Someone else will for sure know on here though. ------------------ Previously "BennyBoy" '69 Coupe with 351W-I rolled it 8/8 Edelbrock RPM intake, Edelbrock RPM cam, Edelbrock 750 cfm carb, Hedman headers, 2 1/2" pipe, glasspacks, C4: shift kit, 9" Currie: Trac-Lok 3.70s, STOCK HEADS SUCK! Starting Project "2ND COMING": 1969 Fastback

10-26-2001, 04:52 PM	#5
84_GT350 Registered Member Join Date: Apr 1999 Location: Overland Park, KS, USA Posts: 1,631	I think you'll need a new flexplate too. If I remember correctly, the C4 flexplates have a different number of teeth. I'm planning on the same swap. You'll need a kickdown linkage too. AODs use a TV rod and C4s use an old-fashioned kickdown. ------------------ 1984 1/2 GT350 (#842 Hatchback w/ T-tops), 302HO, Comp cams Xtreme Energy cam, Carter 625cfm carb, Weiand Stealth intake, MSD distributor, MSD coil, FMS 9mm wires, 1 5/8" MAC unequal shorties, 2 1/2" MAC Prochamber H-pipe, Flowmaster 2 chambers, KYBs, 16"x8" 4 lug Cobra Rs, Falken 245/45ZR16s So I pushed it up to 110, That flathead motor was about to give in, I crossed my fingers and prayed to the lord, Don't let me down you fuct up ford!" "5-Oh Ford" by The Reverend Horton Heat

10-26-2001, 05:15 PM	#6
ALS85GT Registered Member Join Date: Aug 2001 Location: Miami, Fl, USA Posts: 69	Thanks but actually my AOD uses the old style "fixed" kick dn. One less item I guess.