Converting from 3 speed to C6

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Feb 19, 2013 | 08:56 PM

ffflash480

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Converting from 3 speed to C6

What and where should I be looking for a flex plate and balancer? I'm running a 360

Feb 19, 2013 | 10:10 PM

William

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From: Sun River St. George

JEGS will have the flex plate. LoKar will have the shifter. NAPA will have a radiator with integral cooler and the 5/16 lines to connect the transmission to the cooler. Broader will have a reliable C6 and your local driveline shop will be able to shorten the drive shaft. Save all your castoff parts many here are going the other way. You will need to cut the rivets holding the front crossmember so you can remove it and reinstall it after the swap using grade 5 bolts. You will likely need to change the rear gear ratio. Fairly uncomplicated swap not cheap! IMHO!

Feb 19, 2013 | 10:20 PM

ffflash480

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more concerned with what I have heard about matching the flex plate with the harmonic balancer

Feb 20, 2013 | 01:34 AM

NumberDummy

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From: Simi Valley, CA

Converting from 3 speed to C6.

Quote:

Originally Posted by ffflash480

What and where should I be looking for a flex plate and balancer? I'm running a 360.
Local indie and chain autoparts stores. You don't need the balancer if the 360 already has one.

C5AZ-6375-D .. Flexplate / Obsolete ~ Available from any autoparts store.

Applications: 1965/67 F100/350 352 MX Cruise-O-Matic / 1968/76 F100/350 360/390 C6 // 1965/71 FoMoCo Passenger Car 352/390 FX/MX Cruise-O-Matic & C6.
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Harmonic balancer different beginning in 1968 when 360/390's were introduced in F100/350's. And it fits faaar more than just F100/350's, as you can see.

D5TZ-6316-D (replaced D2TZ-6316-A & C8AZ-6316-B) .. Harmonic Balancer / Obsolete ~ Available from any autoparts store.

Applications: 1968/76 F100/350 360/390 // 1968/70 Galaxie/LTD/Mercury Marquis/Fairlane/Torino/Comet/Mustang/Cougar 390/428 & 428 Cobra Jet (not 428 Super Cobra Jet!) / 1971 Galaxie/LTD/Mercury Marquis 390.

1970: Last year for 428 / 1971: Last year for 390's in Passenger Cars / 1976: Last year for 360/390's in F100/350's.
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You don't need to change the radiator! Buy an external trans cooler (there are several different sizes) from any autoparts store. It mounts in front of the radiator.

You do not need to remove the front crossmember. FE engine supports (towers/stands/perches), rubber insulators are the same 1965/76 F100/250 2WD, 1966 F100 4WD, 1967/76 F350.

1969/76 F100/350 with power steering use a different left engine support.

Same applications as above: The rear engine support (some people call this a trans crossmember) bolts on.