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12-28-2007, 09:38 PM
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#1
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15 Second Club
Join Date: Nov 2006
Posts: 390
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turbo 400 vs 700r4
hey guys i know that the 7oor4 is better butevery one tells me they r because of the over drive in it i mean does it really go that much faster on top end the the turbo 400 tranny
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12-29-2007, 01:25 PM
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#2
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11 second club / Moderator
Join Date: Aug 2004
Location: West Berlin, NJ
Posts: 7,148
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What?
Th-400's are better cause they are stronger, not cause they lack overdrive. if you want to go faster on top end, put higher gears in the rear.
__________________
2001 Trans Am WS6 •SLP Loudmouth II •UMI Suspension •12.857 @ 109.57
1996 Trans Am WS6 •Pacesetter Longtubes •Strange 12 Bolt •Spohn Suspension •11.152 @ 123.85
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12-29-2007, 01:35 PM
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#3
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NJFBOA Co-Founder
Join Date: Jul 2004
Location: All up in your kool aid!
Posts: 12,235
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overdrive vs non-overdrive isn't about how fast it can go really. foot to teh floor the 700R4 will only go into 3rd gear anyway. teh difference is having the overdrive to make it more livable on the street and get better mileage when rolling down the highway or really anyplace that you spend time above 35-40mph.
there is really no reason to get rid of the 700 unless you are planning to build an all out race car. even then, a th350 or powerglide would likely be the better choice.
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12-29-2007, 01:55 PM
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#4
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Join Date: Nov 2005
Location: Edison
Posts: 7,856
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Quote:
Originally Posted by deadtrend1
What?
Th-400's are better cause they are stronger, not cause they lack overdrive. if you want to go faster on top end, put higher gears in the rear.
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I thought If you put lower gears in the rear you have more top speed. Higher gears more acceleration? Or is that what you mean and I just dont understand it.
__________________
1984 Firebird
2000 Z28
2023 Tacoma
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12-29-2007, 02:00 PM
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#5
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11 second club / Moderator
Join Date: Aug 2004
Location: West Berlin, NJ
Posts: 7,148
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Quote:
Originally Posted by WayFast84
I thought If you put lower gears in the rear you have more top speed. Higher gears more acceleration? Or is that what you mean and I just dont understand it.
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lower = 3.73:1
higher=2.73:1
think about going in 4WD low and not being able to go fast.
__________________
2001 Trans Am WS6 •SLP Loudmouth II •UMI Suspension •12.857 @ 109.57
1996 Trans Am WS6 •Pacesetter Longtubes •Strange 12 Bolt •Spohn Suspension •11.152 @ 123.85
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12-29-2007, 03:00 PM
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#6
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Power Member
Join Date: Jul 2006
Location: Old Bridge, NJ
Posts: 2,415
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Quote:
Originally Posted by NJSPEEDER
overdrive vs non-overdrive isn't about how fast it can go really. foot to teh floor the 700R4 will only go into 3rd gear anyway. teh difference is having the overdrive to make it more livable on the street and get better mileage when rolling down the highway or really anyplace that you spend time above 35-40mph.
there is really no reason to get rid of the 700 unless you are planning to build an all out race car. even then, a th350 or powerglide would likely be the better choice.
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IIRC the 700r4 can go into overdrive at wot if it has that servo(not sure if thats what it is called) for a corvette.
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12-29-2007, 03:08 PM
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#7
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Join Date: Nov 2005
Location: Edison
Posts: 7,856
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Quote:
Originally Posted by deadtrend1
lower = 3.73:1
higher=2.73:1
think about going in 4WD low and not being able to go fast.
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I got you. thanks alot.
__________________
1984 Firebird
2000 Z28
2023 Tacoma
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12-29-2007, 05:51 PM
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#8
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,473
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Quote:
Originally Posted by Fast92RS
IIRC the 700r4 can go into overdrive at wot if it has that servo(not sure if thats what it is called) for a corvette.
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No, that's just a shift servo that helps it keep line pressure up between shifts.
There is another part that you can replace (name escapes me at the moment) that will allow you to adjust how much pedal pressure you need before the trans will drop from 4th to 3rd.
- Justin
__________________
1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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12-29-2007, 05:59 PM
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#9
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11 second club / Moderator
Join Date: Aug 2004
Location: West Berlin, NJ
Posts: 7,148
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Quote:
Originally Posted by Tru2Chevy
There is another part that you can replace (name escapes me at the moment) that will allow you to adjust how much pedal pressure you need before the trans will drop from 4th to 3rd.
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this?
__________________
2001 Trans Am WS6 •SLP Loudmouth II •UMI Suspension •12.857 @ 109.57
1996 Trans Am WS6 •Pacesetter Longtubes •Strange 12 Bolt •Spohn Suspension •11.152 @ 123.85
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12-29-2007, 06:42 PM
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#10
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10 Second Club; Has fan club
Join Date: Dec 2005
Location: Delmont nj
Posts: 4,369
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Quote:
Originally Posted by Tru2Chevy
No, that's just a shift servo that helps it keep line pressure up between shifts.
There is another part that you can replace (name escapes me at the moment) that will allow you to adjust how much pedal pressure you need before the trans will drop from 4th to 3rd.
- Justin
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I believe the name is-- 3-4 upshift valve or something. i bought one a few years back for my turd gen, but never got around to installing it. Cops had that option in their cruisers i believe, and i think the older corvettes might have but dont hold me to it
__________________
01' Z06 62k miles. Vararam, Longtubes, off road xpipe, tuned by me. Times TBA
2001 Corvette, Bolt ons , tuned 10.75@124.56 mph 1.38 60' Sold
1997 Saturn Sc1 5spd DOHC swapped
Bolt ons, decked head, stock intake cam on exhaust side, lotsa weight redux
13.22@102.32 mph 1.93 60'
12's on moda? One day
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12-29-2007, 06:44 PM
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#11
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10 Second Club; Has fan club
Join Date: Dec 2005
Location: Delmont nj
Posts: 4,369
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Quote:
Originally Posted by Kid Racer
hey guys i know that the 7oor4 is better butevery one tells me they r because of the over drive in it i mean does it really go that much faster on top end the the turbo 400 tranny
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dude, you need to associate yourself with some smarter car people! dont believe anything that "they" tell you. The guys on the boards here know their crap fo sho
__________________
01' Z06 62k miles. Vararam, Longtubes, off road xpipe, tuned by me. Times TBA
2001 Corvette, Bolt ons , tuned 10.75@124.56 mph 1.38 60' Sold
1997 Saturn Sc1 5spd DOHC swapped
Bolt ons, decked head, stock intake cam on exhaust side, lotsa weight redux
13.22@102.32 mph 1.93 60'
12's on moda? One day
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12-29-2007, 07:57 PM
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#12
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,473
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Quote:
Originally Posted by deadtrend1
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Yea, that's it. I've seen ones that won't downshift until ~90% too.
- Justin
__________________
1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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12-29-2007, 08:05 PM
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#13
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15 Second Club
Join Date: Nov 2006
Posts: 390
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yeah i now my pop is an top a mechanic.and he would always lie to me about things so i stop asking him...thanks guy you guy have helped me alot....
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12-29-2007, 09:26 PM
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#14
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BadMod
Join Date: Aug 2004
Location: hamilton, nj
Posts: 8,889
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that makes absolutely no sense. why would your pops lie to you and have you buy parts that arent as good?
__________________
So much stupid, so little time.
Quote:
Originally Posted by 79CamaroDiva
It started before I drove your car. I just have to look at it the wrong way and your car poops parts.
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Mercerville MotorSports, LLC
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12-29-2007, 09:59 PM
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#15
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.
Join Date: Feb 2006
Posts: 1,385
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an over drive converter is not designed to go to lock when the TV cable connected to carb or TB is pulled all the way out, in a simple explain the excessive oil pressure stops the Governor from allowing it to happen -- its a little more involved than that but you get the idea -- also the 400 trans was the choice for GM with big block motors from the 60s making 375 to 600 HP in some cases, the 700 trans was GMs choice for fuel economy and low performance engines - just so you under stand the lock up in the converter uses the stater support on the front pump to take the load on its splines and after a while they the splines wear causing the vibration and or the odd bump you feel when it locks up, the 400 on the other hand is a bull dog it can take a wild beating and still give good service for a long time -- heaver and takes more power to use -- jz
Last edited by johnjzjz; 12-29-2007 at 10:00 PM.
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12-31-2007, 09:59 AM
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#16
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10 Second Club
Join Date: Aug 2004
Location: Hatfield, PA
Posts: 1,292
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i have a race prepped 700r4 for sale with convertor if youre interested. Just freshened up from last year, 0 miles on it. asking $1300 with convertor, its built to the top of the line raptor specs
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12-31-2007, 10:20 AM
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#17
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Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,149
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Quote:
Originally Posted by cbrrmike
that makes absolutely no sense. why would your pops lie to you and have you buy parts that arent as good?
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Wait till you have a kid, LOL.
__________________
Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
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12-31-2007, 11:38 AM
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#18
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Sliderule / Moderator
Join Date: Oct 2004
Location: Catawissa PA
Posts: 2,294
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Are you just asking for knowledge or are you planning on changing trans for a reason?
The OD trans are good for most street cars and for adding some highway gas milage, but will not support the big power a Turbo350 or 400 will. From what I've seen a well built 700 also cost more then a 350/400 trans.
Once you're making big power and hooking hard you will want a TH trans which would have stronger internals and case. "I Think" most use TH350 in place of a 400 on small blocks mostly becuase they can withstand the power and cost less then the 400, but someone can correct me if I'm wrong?
personally I look at glides as track trans. Those I know that run glides are really pure track cars and do so because with it higher first gear to calm down a car (wheelie prone), consistancy, or are in lighter cars. I don't know anyone running a glide in a heavy car for other reasons?
One other option is to use a TH trans and a external OD unit such as a gear vendor. This allows you to use 350/400 trans and still have OD. The down side is your adding weigth to the car and cost and another stress point for failure into your drive train. But I've seen it done.
I based this about a street type car, where crusing around 2,000 RPMs on the highway is as important as low ETs. If you build a car for racing then you're going to build the gearing and suspension, trans, convertor etc. into the total package and give that more importance over driving down the highway at 3,000RPMs.
__________________
93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada
1) Build it
2) Race it
3) Break it
4) Repeat!!!
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12-31-2007, 12:35 PM
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#19
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Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,149
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Build a 4L80E and get a TH400 with OD!
__________________
Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
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12-31-2007, 03:31 PM
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#20
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Power Member
Join Date: Jul 2006
Location: Old Bridge, NJ
Posts: 2,415
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Ive seen th350 swaps into a third gen but can you do a th400 swap into one, with the toruqe arm and all?
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12-31-2007, 03:47 PM
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#21
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Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,149
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Quote:
Originally Posted by Fast92RS
Ive seen th350 swaps into a third gen but can you do a th400 swap into one, with the toruqe arm and all?
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They used to make a swap kit, but I have not seen the th400 one in a while.
__________________
Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
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12-31-2007, 04:09 PM
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#22
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15 Second Club
Join Date: Nov 2006
Posts: 390
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no i was asking because i didnt now...all i now is when i had my camaro i had a 700r4 and i had to rip it out 3 times before i rebuilt it with a b&m street fighter rebuilt kit for it..then it was a bad a&& tranny....but i have always heard that 350 and 400 trannys were better then most trannys...and to answer some of u guys ??? about my dad is...he doesnt tell me the tructh cause he doesnt want me to race or to getinto cars like that....so he trys to keep me away from working on them and puting better parts and adding more power to stuff he doesnt always lie to me but sometimes he does....
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12-31-2007, 05:30 PM
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#23
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American Road Warrior
Join Date: Jul 2005
Location: Wastelands of NJ
Posts: 6,116
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In this day and age there is no reason ya can't get an O/D tranny to work in just about any application. I love my 200R4s!
__________________
unstable bob gable: LEGENDARY LEGEND,
ICONIC ICON, AND AMERICAN BAD AZZ!!!
1991 Dodge Spirit R/T: Gran'pa lookin' 150+ mph turbo rocket.
2013 Dodge Avenger RT: Wastelands cruiser.
2008 Crown Vic Police Interceptor: 'Nuff said!
THE ONLY THING THAT SUCKS WORSE THEN IMPORTS ARE RICED OUT IMPORTS!!!
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12-31-2007, 06:39 PM
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#24
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.
Join Date: Feb 2006
Posts: 1,385
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Quote:
Originally Posted by Pampered-Z
Are you just asking for knowledge or are you planning on changing trans for a reason?
The OD trans are good for most street cars and for adding some highway gas mileage, but will not support the big power a Turbo350 or 400 will. From what I've seen a well built 700 also cost more then a 350/400 trans.
Once you're making big power and hooking hard you will want a TH trans which would have stronger internals and case. "I Think" most use TH350 in place of a 400 on small blocks mostly becuase they can withstand the power and cost less then the 400, but someone can correct me if I'm wrong?
personally I look at glides as track trans. Those I know that run glides are really pure track cars and do so because with it higher first gear to calm down a car (wheelie prone), consistancy, or are in lighter cars. I don't know anyone running a glide in a heavy car for other reasons?
One other option is to use a TH trans and a external OD unit such as a gear vendor. This allows you to use 350/400 trans and still have OD. The down side is your adding weigth to the car and cost and another stress point for failure into your drive train. But I've seen it done.
I based this about a street type car, where crusing around 2,000 RPMs on the highway is as important as low ETs. If you build a car for racing then you're going to build the gearing and suspension, trans, convertor etc. into the total package and give that more importance over driving down the highway at 3,000RPMs.
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Gm installed the powerglide in every car they sold from shoe box novas to vettes to 4000 pound impalas SS cars with all the bells -- the 375 HP 396 chevells were the fastest street cars ever built 65 / 67 with powerglides, high gear is the same 350 400 and iN A glide, its all one to one / and today a 350 does look Heavy duty compared to 700 and alike real steel drums and solid alloy servos and clutch pistons compared to pressed plate like making a dish or spoon yea it works but it has an end not like the others - powerglides today can handle 2500 HP of coarse they are not gm cases but some stuff in them is still OEM original 30 year old components from the original cars they came in -- jz
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01-02-2008, 07:21 PM
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#25
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Banned Camp Director Emeritus
Join Date: Aug 2004
Location: Somerset County
Posts: 8,395
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Quote:
Originally Posted by Fast92RS
Ive seen th350 swaps into a third gen but can you do a th400 swap into one, with the toruqe arm and all?
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spohn has a cross member and torque arm for that swap.
__________________
Quote:
Originally Posted by baddest434
and 1 more smart ass answer by you and i'm going to reach into this monitor and grab you by the throat
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