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Swapping from 727 to Turbo 400
#1623895
05/22/14 11:55 PM
05/22/14 11:55 PM
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Joined: Dec 2005
Posts: 259
Scatchamatoon
Saskabusa
OP
enthusiast
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OP
enthusiast
Joined: Dec 2005
Posts: 259
Scatchamatoon
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What all would be involved in this swap?
If you used a ATI SFI case or equivalent.
New convertor, shifter?
Would there be more clearance on the floor boards?
What is the difference in length?
Some type of custom trans mount.
How many guys have done this?
Any advice?
1974 Roadrunner
1967 Charger
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Re: Swapping from 727 to Turbo 400
[Re: Saskabusa]
#1623896
05/23/14 03:07 AM
05/23/14 03:07 AM
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Joined: Jan 2003
Posts: 296
Ontario Canada
Hutch
enthusiast
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enthusiast
Joined: Jan 2003
Posts: 296
Ontario Canada
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The nicest case by far is the Reid case. That along with their bellhousing is the best you will get in a T400 case. Normally the trans is built stock length or PG length but I have built some with long tailhousings for cars that already have a long driveshaft. I will take a few measurments tomorrow and post the differences in lengths and mount locations. The shape of the trans is quite a bit different than the TF so it may get a little crowded towards the back of the trans/floor. Im sure someone that has done the swap will chime in about any fitment issues. You will need a converter, flexplate, hub adapter and shifter to complete the package. Hutch www.hutchtrans.com
Last edited by Hutch; 05/23/14 03:08 AM.
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Re: Swapping from 727 to Turbo 400
[Re: Saskabusa]
#1623897
05/23/14 11:41 AM
05/23/14 11:41 AM
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Joined: May 2005
Posts: 54
VA Beach, VA
Runnoft
member
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member
Joined: May 2005
Posts: 54
VA Beach, VA
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I have a TH400 in my '66 B-body behind a warmed up 440. I used a JW Ultra bell with an ATI 6-bolt crank adapter and ATI flywheel. The converter is just a regular TH400 piece. I had to cut up the factory trans cross member and fab a new transmission mount which wasn't a big deal. I also had to clearance the floor pan reinforcement brace that runs above the trans cross member/torsion bar bulkhead. Some things to be aware of: you will have to run a manual valve body since there is no room for the modulator valve in the factory trans tunnel. You can't use a factory shifter without major modifications. The TH400 and 727 have a different spacing in the length of the "throw" between park and reverse.
Hope this helps.
Cruiser: 66 Dodge Coronet 500, Indy SR 440, Gen 7 Accel EFI = 11.38 @ 116.
Racing: Brand X, X275 Procharged Smallblock on M1, Leafsprings, Holley EFI = 4.30 @ 168
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Re: Swapping from 727 to Turbo 400
[Re: Saskabusa]
#1623898
05/23/14 11:47 AM
05/23/14 11:47 AM
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Joined: May 2005
Posts: 54
VA Beach, VA
Runnoft
member
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member
Joined: May 2005
Posts: 54
VA Beach, VA
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Thought of a couple of more things:
I just used a stock Buick, Olds, Pontiac pattern case. They are cheap and easy to find. Also, the TH400 is shorter overall than a 727 so you will need a longer driveshaft and finally I ended up using a Hurst quarter-stick shifter under my factory console after I tried and tried to get the factory shifter to work.
Cruiser: 66 Dodge Coronet 500, Indy SR 440, Gen 7 Accel EFI = 11.38 @ 116.
Racing: Brand X, X275 Procharged Smallblock on M1, Leafsprings, Holley EFI = 4.30 @ 168
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Re: Swapping from 727 to Turbo 400
[Re: Saskabusa]
#1623900
05/23/14 12:23 PM
05/23/14 12:23 PM
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Joined: May 2005
Posts: 54
VA Beach, VA
Runnoft
member
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member
Joined: May 2005
Posts: 54
VA Beach, VA
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I don't think you could run a factory TH400 case with an external shield without doing a lot of cutting. In your case, you would probably have an easier time by using an SFI case. The TH400 is bigger in the "business" area. Mine is just a street car but I have no regrets switching over. It makes me smile on every 2 to 3 full throttle up shift.
Cruiser: 66 Dodge Coronet 500, Indy SR 440, Gen 7 Accel EFI = 11.38 @ 116.
Racing: Brand X, X275 Procharged Smallblock on M1, Leafsprings, Holley EFI = 4.30 @ 168
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Re: Swapping from 727 to Turbo 400
[Re: Runnoft]
#1623901
05/24/14 03:37 AM
05/24/14 03:37 AM
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Joined: Jan 2003
Posts: 771
Btween a rock and a hard place
moparlulu
super stock
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super stock
Joined: Jan 2003
Posts: 771
Btween a rock and a hard place
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Quote:
I don't think you could run a factory TH400 case with an external shield without doing a lot of cutting. In your case, you would probably have an easier time by using an SFI case. The TH400 is bigger in the "business" area. Mine is just a street car but I have no regrets switching over. It makes me smile on every 2 to 3 full throttle up shift.
whats the big difference to go to all that hassle?........just asking.
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Re: Swapping from 727 to Turbo 400
[Re: Saskabusa]
#1623903
05/24/14 11:30 AM
05/24/14 11:30 AM
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Joined: Jan 2003
Posts: 2,763
Walton's Mountain, Pa
Steve1118
master
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master
Joined: Jan 2003
Posts: 2,763
Walton's Mountain, Pa
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I don't know...we've been racing Hemi cars for over well over forty years, all with Torqueflites. Never had issues, or "catastrophic failure". Do whatever you want, but it seems like a lot of screwing around......
"Old age and treachery trumps youth and enthusiasm, every time!" East Central Director / Chrysler Power Magazine www.reasbeckracing.webs.com
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Re: Swapping from 727 to Turbo 400
[Re: Steve1118]
#1623904
05/24/14 01:13 PM
05/24/14 01:13 PM
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Joined: Dec 2009
Posts: 20,657
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,657
in a cattle trailer down by th...
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Quote:
I don't know...we've been racing Hemi cars for over well over forty years, all with Torqueflites. Never had issues, or "catastrophic failure". Do whatever you want, but it seems like a lot of screwing around......
I also don't understand the sudden shift on the perception of the TF. You have to modify the 400 for it to be a player too.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: Swapping from 727 to Turbo 400
[Re: Guitar Jones]
#1623905
05/24/14 04:20 PM
05/24/14 04:20 PM
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Joined: May 2011
Posts: 625
Oakville, Wa
HOTMOPR
mopar
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mopar
Joined: May 2011
Posts: 625
Oakville, Wa
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Ya I don't get why people are scared of torqueflites. Put a good drum in it and a bolt in sprag and you will be fine.
67 Barracuda, 470" B, Glide, FuelTech FT600, Precision, Ptc, QA1, Calvert, Smith racecraft, Afco, Dana 60. 275 radials
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Re: Swapping from 727 to Turbo 400
[Re: John_Kunkel]
#1623908
05/24/14 06:54 PM
05/24/14 06:54 PM
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Joined: Jan 2003
Posts: 2,763
Walton's Mountain, Pa
Steve1118
master
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master
Joined: Jan 2003
Posts: 2,763
Walton's Mountain, Pa
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"most folks in the know recognize the superiority of the TH400 and have for a long time"
I see, I understand now. I guess we've must been under a rock since 1964. Silly us for not seeing the obvious superiority of the TH400 and wasting time with TF's on our Hemi and wedge cars....if we'd have only known...... Excuse us for not being in the know.
"Old age and treachery trumps youth and enthusiasm, every time!" East Central Director / Chrysler Power Magazine www.reasbeckracing.webs.com
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Re: Swapping from 727 to Turbo 400
[Re: Steve1118]
#1623909
05/24/14 07:07 PM
05/24/14 07:07 PM
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Joined: May 2011
Posts: 625
Oakville, Wa
HOTMOPR
mopar
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mopar
Joined: May 2011
Posts: 625
Oakville, Wa
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LOL Ya I would be willing to bet I am laying down more Hp than most. Never had a issue (knock on wood). From big blocks on spray or boost. I had a Ram diesel that ran bottom 12s and launching with 30 psi in 4x4 and never broke anything. Basically the same trans other than OD..
67 Barracuda, 470" B, Glide, FuelTech FT600, Precision, Ptc, QA1, Calvert, Smith racecraft, Afco, Dana 60. 275 radials
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Re: Swapping from 727 to Turbo 400
[Re: John_Kunkel]
#1623910
05/24/14 07:35 PM
05/24/14 07:35 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Quote:
I also don't understand the sudden shift on the perception of the TF.
It's not "sudden", most folks in the know recognize the superiority of the TH400 and have for a long time.
Doesnt the TH400 use a sprag also
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Re: Swapping from 727 to Turbo 400
[Re: MR_P_BODY]
#1623911
05/24/14 07:45 PM
05/24/14 07:45 PM
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Joined: Dec 2005
Posts: 259
Scatchamatoon
Saskabusa
OP
enthusiast
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OP
enthusiast
Joined: Dec 2005
Posts: 259
Scatchamatoon
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If you want a debate pros and cons of 727 versus the world feel free to start your own thread.
This thread is about putting a T400 in a b body. If you have some constructive advise to add great.
Half the posts in this thread are of no use what so ever.
1974 Roadrunner
1967 Charger
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Re: Swapping from 727 to Turbo 400
[Re: Saskabusa]
#1623913
05/24/14 07:53 PM
05/24/14 07:53 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
If you want a debate pros and cons of 727 versus the world feel free to start your own thread.
This thread is about putting a T400 in a b body. If you have some constructive advise to add great.
Half the posts in this thread are of no use what so ever.
I asked a question... I dont know if they do or not..
NOT trying to start anything
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