Replacing 4 speed with a c6. Directions?

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Jun 25, 2005 | 02:22 PM

70crewcabber

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From: Erie Kansas

Replacing 4 speed with a c6. Directions?

Hello all.
I just picked up a '70 ford crewcab, 4wd, shortbed and really wanna do the old girl right. Anyhow, it currently has a 4 speed tranny and I wanna install a C6 behind the 390. I don't really wanna change the steering colum so I would be willing to put in a nice floor shifter for the new c6. What all do I need to accomplish this besides the new c6?. Oh, and what years of c6 will work with the 390? Just wondering if there were good comprehensive directions somewhere on the net for accomplishing this!

Thanks for your time!

Jun 25, 2005 | 02:28 PM

pfogle

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From: Oak Harbor, OH

you'll need to find a C6 that was behind a 352/360/390 as the bolt pattern is different, you'll need the flywheel from the same motor that the C6 comes off of, and the throttle linkages. You will also need to hook a vacuum line to the trans too.

Jun 26, 2005 | 06:23 AM

jowilker

Fleet Owner

Joined: Jun 1999

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From: Creedmoor, North Carolina

70, The FE uses a round top bell tranny and the C6 is a one piece case, with no year differences that I am aware of. You have two choices,
1- find a FE bell 4X4 C6 tranny or
2- have a FE bell C6 case and swap the 4X4 tail shaft from another 4X4 C6 case

All other connection concerns up front will be the same. You will need to remove the pilot bushing from the crank, and swap a flexplate in for the flywheel. 2wd & 4wd gear selector, and kickdown rods will be the same.

I think I am correct, All transfer case mount points are the same to the tranny.

John

Jun 26, 2005 | 11:19 AM

fling

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Joined: Sep 2003

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Location

where you located? I have a good C-6 behind my 428 and i want to go manual, I'll trade you. Im in San Diego

Jun 26, 2005 | 12:49 PM

70crewcabber

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From: Erie Kansas

I am in Erie Kansas, which is in the southeast corner @ 66733. I wonder how much shipping would be...............Does UPS ship anything this heavy?

Jun 26, 2005 | 01:04 PM

davethecow

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From: fallon nv

do you know what transfercase you have.different cases have different adaptors.some of these adaptors are getting hard to come by

Jun 26, 2005 | 01:09 PM

70crewcabber

Thread Starter

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Joined: Jun 2005

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From: Erie Kansas

I know it is sad to say, but I don't know which one I have yet. I will run down a little later and write down which one it is. I do know this though, the guy I bought it off of said the mileage on the title was correct at right around 56,000 actual miles.

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Jun 27, 2005 | 06:45 AM

jowilker

Fleet Owner

Joined: Jun 1999

Posts: 24,552

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From: Creedmoor, North Carolina

This site could prove helpful
http://www.truckpulls.com/Transferca...mage_Index.htm

John

Jun 27, 2005 | 01:29 PM

#10

bertha66

Lead Driver

Joined: Oct 2004

Posts: 8,062

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From: Central Oregon

While you switching all the gear around don't forget the pedals, brake and clutch pedals. The asembelies will unbolt and interchange.

Jun 27, 2005 | 11:17 PM

#11

"Beemer Nut"

Post Fiend

Joined: Dec 2003

Posts: 6,658

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From: "Islander"

Trucks with a manual trans will have the front crossmember riveted in vs auto
trans trucks bolted in. Manual to auto your trans will have to go out the front (pull motor) unless you drill the rivets and add bolts to remove the crossmember. Auto to manual, no problem.
.....=o&o>.....