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I tried getting info on this type of tranny but have not luck. Do any of you guys know anything about these tranmissions? Or how good they are?
Info on a 727 torque-flight 3-speed tranny
- Thread starter Attila_Da_Hun
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- 650
there really strong good for drag racing. thats all i know.
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- old-guy64
It is the automatic of choice for the Big Mopars.
If it's strong enough to work and live behind a 440 six-pack it's strong enough for pretty much anything.
Unlike Ford and Chevy, Mopar's 727 can go behind the big block and the small block.
With Chevy it's Turbo-Hydramatic 350 for small blocks and TH-400 for big blocks.
For Ford it's C4 for small blocks and C6 for Big blocks.
Hope that helps some.
If it's strong enough to work and live behind a 440 six-pack it's strong enough for pretty much anything.
Unlike Ford and Chevy, Mopar's 727 can go behind the big block and the small block.
With Chevy it's Turbo-Hydramatic 350 for small blocks and TH-400 for big blocks.
For Ford it's C4 for small blocks and C6 for Big blocks.
Hope that helps some.
- 650
gm trannys will work with small blocks or big blocks. the turbo 400 is what must all of the GM "street" drag cars use or some use a 2 speed powerguilde. but the GM trannys bolt up to big blocks or small the 400 is used mostly because its the strongest
mayorbill11
(Banned)
- 1,231
mopar transmissions were also used in AMCs, most V8s got 727s.
mayorbill11
(Banned)
- 1,231
no.
in 1954 American Motors was created when nash merged with (bought) hudson. throughout the late 50s and 60s the cars went by many brand names, including nash, rambler, american motors, and finally in 1970 they were all called AMC, with the famous logo.
that year, AMC also bought Jeep from Kaiser auto, which quit making cars. in 1979 Renault bought 25% of AMC, then bought 24% more to 49% in 1983. in 1987 Renault sold it's share to Chrysler, which then bought an extra 2%, giving chrysler 51% and complete control of the company. so, basically, chrysler got AMC in 1987, by that time AMC hadn't made an AMC car since the Eagle in 1980. AMC never made their own automatics, they started using chrysler autos in 1972.
in 1954 American Motors was created when nash merged with (bought) hudson. throughout the late 50s and 60s the cars went by many brand names, including nash, rambler, american motors, and finally in 1970 they were all called AMC, with the famous logo.
that year, AMC also bought Jeep from Kaiser auto, which quit making cars. in 1979 Renault bought 25% of AMC, then bought 24% more to 49% in 1983. in 1987 Renault sold it's share to Chrysler, which then bought an extra 2%, giving chrysler 51% and complete control of the company. so, basically, chrysler got AMC in 1987, by that time AMC hadn't made an AMC car since the Eagle in 1980. AMC never made their own automatics, they started using chrysler autos in 1972.
- 6,977
- old-guy64
Yes the "rule of thumb" is to use the TH400 on the big blocks and the TH350 on the small blocks.Originally posted by wana b drifter
gm trannys will work with small blocks or big blocks. the turbo 400 is what must all of the GM "street" drag cars use or some use a 2 speed powerguilde. but the GM trannys bolt up to big blocks or small the 400 is used mostly because its the strongest
I'm still wondering how the Chevy 400 cid engine is a small block (mouse motor), while the 396 cid engine is a big block (rat motor).
I guess that the 400 is a 350 block with bigger heads, and different connecting rods.
But I figure that most of the auto makers have engines that share engine blocks.
The Ford 390, 428, and 429 are the same Engine block.
I also believe that the 396 and 427 share the same block.
And since we started on Mopars, I think the 318 and 340 share a block and the big "Wedge" motors all share the same block from 383 on up.
Of course, as I think about it lots of parts are shared inter company, and intermanufacturer.
Jaguar is part of Ford, but used to use GM automatic trannys in the XJ-12.
- 6,977
- old-guy64
You are correct, as far as you went.Originally posted by mayorbill11
no.
in 1954 American Motors was created when nash merged with (bought) hudson. throughout the late 50s and 60s the cars went by many brand names, including nash, rambler, american motors, and finally in 1970 they were all called AMC, with the famous logo.
The controlling interest in AMC was purchased from Renault in 1987, by Chrysler Corporation, and the name AMC discontinued in 1988. However the same 4.0liter engine that was in the Jeep Grand Cherokee and Wranglerwas designed by AMC, and remained in production until the year 2002.
mayorbill11
(Banned)
- 1,231
No AMC ever used a Mopar engine.
AMC used the following non-AMC engines:
1954-1956 packard V8s (they needed time to develop their own engine)
bought rights to the audi 2.0L I4 in 1978 which they used for one year in the Gremlin, it was the only I4 Gremlin ever.
they used the pontiac iron duke 2.5L I4 in some cars from 1980-1983, AMC didn't make an I4 until 1984.
AMC used the following non-AMC engines:
1954-1956 packard V8s (they needed time to develop their own engine)
bought rights to the audi 2.0L I4 in 1978 which they used for one year in the Gremlin, it was the only I4 Gremlin ever.
they used the pontiac iron duke 2.5L I4 in some cars from 1980-1983, AMC didn't make an I4 until 1984.
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- 2,224
The first thing ill do is get here running, replace front fendors, strip interior, replace air suspention seals, install 4:ll rear end and install the 727, and rewire whole car cause the electrical system is completely shot, shorts everywhere. Later on when i get molre money ill replace rear quatar panels, rebuild interior, get seats recovered, paint, and do any other things that need work. I say it will be 1 year minimum and 2 years max on the whole project. When i drive it ill try not to use the secodaries in the carb with gas at 2 dollars a gallon because with all four carb barrels open the car runs on 2mpg!
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My first question is what year is the car? second if you car really has a 340 in it to bore it to a 360 you would have to bore it approx.120 thousands over.It would not be streetable would not run cool enough.3 the stahl size on converter.4 oversized cams ,as far as i know 340's only had 1 cam.and what is a reinforced valve,i heard of swirl polished ,stainless. And with all that work in the car why would you restrict it exhaust flow by running manifolds? 
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Oh and another thing it would be stupid to put an auto in ,you will lose alot more horse at the rear wheels with an auto.
- 249
Sorry about all these post's,as to the 727 tranny it is ok its what is in my dodge 4x4 truck.its my work truck its an 90 dodge 318 ,727 auto,dana rear ends,the tranny works fine and it can pull the crap out of anything i hooked it to so far
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There were sleve put in after it was bored so it would run cooler so it is a 360, but with the sleves its brings it back down to 340, but runs alot cooler. I musta mistyped something about the manifold cuase i type very fast and have a tendency to leave parts of sentences out sometimes, i meant 2 say that it has 2 cat paw manifolds w/ 2 low flow resistance mufflers. Show me where i said that. streetable? should be streetable. The mass road hp limit is like 500 and i think the most the thing will kick out is just below that.Originally posted by musclecarfan
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Like i said manifolds restrict it way too much to even come close to 500 hp,And why bore it to resleeve it? and make it what it started out as in the first place? What is a cat paw manifold? I have been around performance cars all my life and never heard of these. I'm not trying to put you down , but it sounds like you have some miss information on some of this stuff.
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It has manifolds cuase its 31 years old. I have no idea what a "cat paw" manifold is becuase 20 years my step dad and his borthers souped up that thing and thats what they claim they put on it. Boring it and re-sleving it makes the engine run cooler from what i hear, also makes the engine last longer cause you can replace the sleeves at high mileage and make it like new. Thats what they do to those huge farm tractors and thats one reason why they last to be over 100 years old.Originally posted by musclecarfan
Like i said manifolds restrict it way too much to even come close to 500 hp,And why bore it to resleeve it? and make it what it started out as in the first place? What is a cat paw manifold? I have been around performance cars all my life and never heard of these. I'm not trying to put you down , but it sounds like you have some miss information on some of this stuff.
What do you mean manifold restrict may 2 much? its just basically a metal tube going from the engine to the tail pipes. But i may have some "miss info" like you say. ill try to look up those type of manifolds, if nothing comes up im gonna tease my step dad to death
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Ok now i hear their "cat paw headers"
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ok headers ,like i said manifolds are cast and rough not very equal in length ,headers have a smooth inside hat allows the gases to flow better ,the better one have equal length tubes and will keep the pressures the same on all the exhaust ports and will produce more power.And i know what a sleeve is i never heard of any body doing this unless the the cylinder was too far gone to fix by normal boring.i also have older vehicles a 63 chevy 2 or nova it has a 327 bored 30 over, fuelie heads or double hump as some people call them with 202 valves victor jr edelbrock intake also edelbrock 750 spreadbore type carb.a 50 chevy fleetline deluxe 2 door ,216 inline six with 3 on the tree,a 50 chevy coupe ex-gasser drag car that needs a total restore,and i was not trying to rude or mean i was just trying to understand what you ment by some of the stuff,so im sorry if i offended you.good luck with your car
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You didn't offend me. But thanks, if need be pont out any other things cause when it comes to that stuff, i know what what things are and what they do, its just the names of things that get me.
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New question, with a torque-converter, do you loose acceleration as compared to a clutch?
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well i wouldnt say you lose acceleration ,but it does take more horse power to activate all the clutch packs and turn the converter
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Woth i torquey motor like that, im not concered. ill have to bring it to the track someday just becauce.
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