72 340 4 spd question

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luis9995

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hi everyone I have a 1972 340 car numbers matching. It is a 4spd and I'm thinking about buying a 4 spd on Craigslist looks complete minus shifter lever and handle. The guy says its off a 360 and maybe barracuda. Because it has a long tailshaft. I was wondering if this would fit my 1972 340 demon? He says the flywheel is for an external balanced 360 would that work for mine? Was a 72 340 internally balanced or external? Or would I need a specific flywheel etc? Let me know please. Thank you
 
Be careful, it could very likely be an overdrive 4 speed..... not that there is anything wrong with that. Is it an aluminum case? Do you have any pictures? Being long tailshaft and from a 360 is the tip off......

Yes, long tailshaft 4 speeds can be made to work in an a body, they are the same overall length as a 727 auto. You will have to fab a custom shifter mount, there are instructions floating around the net.
 
No, the A-body transmission is shorter than the e-body. The long one does not work in a A-body. Not a factory bolt in anyway. Your 340 is probably external balance.
 
Be careful, it could very likely be an overdrive 4 speed..... not that there is anything wrong with that. Is it an aluminum case? Do you have any pictures? Being long tailshaft and from a 360 is the tip off......

Yes, long tailshaft 4 speeds can be made to work in an a body, they are the same overall length as a 727 auto. You will have to fab a custom shifter mount, there are instructions floating around the net.

Chrysler 833 4 speed trans.
That's the link. I called the guy earlier and it's his sons. He doesn't know much because he says the 4spd is the same the hemi cars used. But it's not an 18 spline so not the same.
 
Thanks everyone! I don't want to have to modify anything. I was looking to get a year matching one but since this one was complete figured I'd use it meanwhile so I could drive my car but if I have to modify or facrocye pieces I rather wait til I see a 72 4 spd in my budget
 
Thanks everyone! I don't want to have to modify anything. I was looking to get a year matching one but since this one was complete figured I'd use it meanwhile so I could drive my car but if I have to modify or facrocye pieces I rather wait til I see a 72 4 spd in my budget
The only part of that trans that will match up is the trans mount position everything else is out of place and require alot of mods
 
What I see there is a OD unit out of a truck, (called a Miser), but he's got the one piece of linkage on upside down. I could be wrong, but ask for the diameter of the front bearing housing. Top is "A" body OD unit, bottom is "B, E" unit , note the iron case.
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The only part of that trans that will match up is the trans mount position everything else is out of place and require alot of mods
I beg to differ. If you fab the bracket to position the shifter properly, the only other difference is the driveshaft length, which would be the same as for a 727.
 
hi everyone I have a 1972 340 car numbers matching. It is a 4spd and I'm thinking about buying a 4 spd on Craigslist looks complete minus shifter lever and handle. The guy says its off a 360 and maybe barracuda. Because it has a long tailshaft. I was wondering if this would fit my 1972 340 demon? He says the flywheel is for an external balanced 360 would that work for mine? Was a 72 340 internally balanced or external? Or would I need a specific flywheel etc? Let me know please. Thank you

I like the long tail in my 68 Barracuda. If you ever want to add a GVOD to your Demon, you will have to start with a long-tail . I put the shifter way back between the buckets, and fabbed up some HD rods. S'nice. No more missed shifts since that day. And no more knuckles in the dash. The relocated floor hole was a bit of a problem.
I understand if you want to keep your car original. Mine was a slanty automatic, so it had no "extra value". I cut it, bend it pound it, move stuff, do whatever it takes to make it mine.
Be very careful when shopping for a short tail. As already mentioned, they come in several flavors, not all of which are what you want. Try to get one with a bellhousing and fork, if you don't already have those pieces. Resist the urge to get the OD version, they are not really 340-friendly. If you get a chance to buy a 3.09 low box;they are great!.......but you have to convert them to a slip-yoke output. The 3.09 low will take off with 3.55s, as if it had a 4.12 in the back, and that means you can cruise 65@about 2870 with the 3.55s. The rest of the gears are the same, so you have to wind first out a little before grabbing second. They are a perfect set-up for a 360, cuz the 360 pulls that 62% split like nothing.
Your 72 340 should have been born with a zero balance flywheel, but all these decades later, there's really no way to know, what she wants, even if you pull the pan, cuz you don't know what pistons are in it.
The 360 is balanced different than a cast-crank 340. And the Magnum is yet again different.
IMO, the factory shifter kit was not the best, Be prepared to fight it until you get it dialed in.The biggest problems were the levers coming loose from the trans, and the sloppy, rubber-band shift-rods, The shifter itself wasn't bad as long as it stayed clean. Resist the urge to get anything but an H-pattern shifter. I've had great success with a circa 1971 Mr.Gasket Bang! shifter with it's pretty short hi-mount stick. I love that thing. Yeah I bought it new,lol, in 1971, for my 1970Swinger340. It's been in near continuous use since that time,in one car or another.I guess it's coming 47 years old, and probably has 300,000 miles on it. Gee, I wonder how many shifts that would be?
 
Am I missing something? He says he has a matching numbers 340 4 speed Demon, and he wants to buy another tranny off of Craig's List for it? I am just curious why he would put a non-matching tranny in the place of the matching number tranny. Usually, when we say "matching numbers", we mean that at least the engine and tranny match.
 
Am I missing something? He says he has a matching numbers 340 4 speed Demon, and he wants to buy another tranny off of Craig's List for it? I am just curious why he would put a non-matching tranny in the place of the matching number tranny. Usually, when we say "matching numbers", we mean that at least the engine and tranny match.
I think your definitely on to something. What is the reason for buying this? Ain't no one in LA sellin cheap 4-speed parts..?
 
Am I missing something? He says he has a matching numbers 340 4 speed Demon, and he wants to buy another tranny off of Craig's List for it? I am just curious why he would put a non-matching tranny in the place of the matching number tranny. Usually, when we say "matching numbers", we mean that at least the engine and tranny match.
The engine is numbers matching trans is missing but bellhousing is there
 
I have a 4 speed A833 trans non overdrive for A body with trans mount
Whittier CA
 
"72" 340 could be internal or externally balanced. Externally balanced 340's are balanced different than 360's.
 
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