View Full Version : Wrong Torque Converter
05-15-2009, 07:31 PM
It's a 1978 F-250 4x4 that had a 460 auto in it. I'm putting in a 390 out of a 1976 F-150 that had a manual tranny. I got a C-6 that came out of a 1975 F-150 that I rebuilt. I ordered a torque converter for a 76 F-150 390 auto and it won't work, what do I need? The studs on the TC are flush with the nub on the inside of the TC and the nub is bottoming out on the end of the crank and the studs are sitting flush with the flexplate. Can anyone help, I'm lost.
05-15-2009, 08:16 PM
Is that just a bushing in there?
05-15-2009, 08:21 PM
Take out the pilot bushing. Was the motor out of a stick?
You MAY be able to get it out by finding a punch that fits EXACTLY in the hole, then fill the hole with grease and drive the punch in the hole. If you can't find a punch the right size, build it up with electrical tape.
I am a mechanic and I play one at work.
I re read your post. It was out of a stick.
05-15-2009, 08:50 PM
Thanks, I don't know what I was thinking. I read that trick somewhere, I've been wanting to try it out :D
05-15-2009, 09:07 PM
fill the hole with grease use a round rod and pack in the grease
keep packing grease in and it will push out the bushing
05-15-2009, 11:52 PM
Besides what's already been solved, be sure to use the correct block plate between the engine and trans.
I know the 460 flywheel will bolt on, but not all mixes are correct for balance and starter engagement; better do some homework and testing before you plant it. Especially make sure to avoid the imbalance issues.
If that's your implant waiting in the wings, and it's wearing original Ford red paint, you might have a nice hot Merc engine on your hands, could be a 410. :cool: Will that oil pan clear in a stock 4x4 chassis?
Are you gonna put another carburetor on it, or two more? :laugh: :drinkup:
Now's the time to check the manifold mounting threads
And don't jamb the trans pump when you bolt it up! :realmad:
05-16-2009, 04:19 AM
The 390 stroker is in! I felt like such a dumbass with the bushing. The grease method works great. I remember where I heard about now, an old man at work was talking about it a couple of weeks ago. I bought the 390 a few years ago and it's been in the old 76 with the 4-spd behind it. That was one tuff SOB with those low gears. I hauled 15 of the big rolls of hay a couple of times with it. It was a little overloaded for a 1/2 ton truck :D Maybe the F-250 will tote it a little better. I had to cut the headers off when I pulled it from the 76 because my bolts were siezed up and stripped out, they had a few holes in them anyway. I had a 360 layin around I robbed the manifolds from. Hopefully I'll have her up and running next week. I hope it'll pull, I rebuilt the tranny myself :eek:
05-16-2009, 08:35 AM
I remember where I heard about now, an old man at work was talking about it a couple of weeks ago.
Does that make me an old man?
Denrep, I put a chevy 350 in a motor home that had a 400. The 400 is externally balanced, 350 is internal. I had to replace the flex plate because the ring gear was bad. I bought one for a 350. LUCKY me. When I fired it up, it shook like crazy. All I had to change was the vibration damper.
05-16-2009, 08:55 AM
...Denrep, I put a chevy 350 in a motor home that had a 400. The 400 is externally balanced, 350 is internal. I had to replace the flex plate because the ring gear was bad. I bought one for a 350. LUCKY me. When I fired it up, it shook like crazy. All I had to change was the vibration damper.
Otherwise next time, :laugh: if it's just the weighted flexplate...
Reach in with a torch and heat the weight up on the 400 flexplate, then peel it off with an air chisel and long bit.
There were a bunch of engines that would shake if the flywheels were mixed up.
With Ford trucks that were commonly put together without the weighted flywheel, you could smooth out a shaker by welding a weight to the clutch cover... But later, when mechanic B puts a clutch in it, he had better reinstall a cover weighted in the same spot! :laugh:
05-16-2009, 02:53 PM
The customer tole me it was a 350. See what I get for listening to the customer?
The customer is NOT always right.
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