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My 1st 440 build in almost 40 years

So while I was waiting on a few parts to come I decided to address the loose heater a/c controls in the dash. I got that part figured out, the ears for mounting had broken off made new ones out of metal. Upon further inspection I found 2 nipples broke off the vacum control switch. I researched and found a couple for 550, uh nope. Here is my repair. Use a 7/32 drill bit and drilled out the nipple location, I then used part of a wd40 straw cut to length and pressed into the 7/32 hole. It's a tight fit, then I used super glue around the base of the straw.
20210602_114912.jpg

Worked perfectly and fits the vacum connector firm.
 
Well I got the car off the jack stands and running and driving. Now I'm working on the bugs brakes fuel supply problems etc. I had a strange vibration that I quickly discovered was the harmonic balancer I ordered was not the balancer I ordered. I changed the balancer and that got rid of 80% of the vibration. I had to buy a new stock flex plate to fit my hughes torque converter. My engine is externally balanced, is it possible that the flex plate is causing vibration?
20210805_110610.jpg
 
Yes you need either a weighted converter or flex plate, to balance the rear end of the engine.
 
RemCharger said:
Yes you need either a weighted converter or flex plate, to balance the rear end of the engine.
Click to expand...
The converter is neutral balance and new as everything else is, the flexplate that was on the engine originally was not weighted. Does that make any difference?
 
nope. if you have a cast crank.. you need the proper 440 weight welded on.the converter
Or take the flex plate back out.
 
RemCharger said:
nope. if you have a cast crank.. you need the proper 440 weight welded on.the converter
Or take the flex plate back out.
Click to expand...
Any recommendations to look for a properly weighted flex plate? Cause I sure don't want to buy a new torque converter.
 
If you can get the proper weight you can just weld it on the converter like factory.
 
Cast cranks used an externally balanced Torque Convertor with a weight welded to the outside of the Convertor body of the correct 'weight'..... and at the correct 'distance' out from center ?
Just say'in....
'distance' from center plays as great a role of where the weight is placed as much as the 'correct' weight as well ?
To fix it at this point you have 3 choices:
1.) Dis-assemble and get the rotating assembly balanced ?(unlikely)
2.) put the stock 'weighted' cast crank convertor back in ?
(Probably best)
3.) try finding an externally weighted flexplate for Cast Crank 440's
(They are 'out there' as we did up a bunch about 15 years ago)
 
Challenger340 said:
Cast cranks used an externally balanced Torque Convertor with a weight welded to the outside of the Convertor body of the correct 'weight'..... and at the correct 'distance' out from center ?
Just say'in....
'distance' from center plays as great a role of where the weight is placed as much as the 'correct' weight as well ?
To fix it at this point you have 3 choices:
1.) Dis-assemble and get the rotating assembly balanced ?(unlikely)
2.) put the stock 'weighted' cast crank convertor back in ?
(Probably best)
3.) try finding an externally weighted flexplate for Cast Crank 440's
(They are 'out there' as we did up a bunch about 15 years ago)
Click to expand...
The original converter was toast so I'm gonna find a new flexplate, thanks
 
Roger63 said:
So while I was waiting on a few parts to come I decided to address the loose heater a/c controls in the dash. I got that part figured out, the ears for mounting had broken off made new ones out of metal. Upon further inspection I found 2 nipples broke off the vacum control switch. I researched and found a couple for 550, uh nope. Here is my repair. Use a 7/32 drill bit and drilled out the nipple location, I then used part of a wd40 straw cut to length and pressed into the 7/32 hole. It's a tight fit, then I used super glue around the base of the straw.View attachment 1118760
Worked perfectly and fits the vacum connector firm.
Click to expand...
F'ing genius! Thanks!!!
 
Update on my vibration problem. Took the advice offered and got the correct flexplate and installed and no more vibration. Thanks folks.
 
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