what are the differences between the two? JavaScript is disabled. I have had good luck running both but on a mostly off road rig I would go with the th400.. That would be considered the stronger of the 2.. There are many differences between the TH350 and 700R4 transmissions. http://www.bowtieoverdrives.com/index.shtml, VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. which is better? If your not making crazy horse power use a Turbo 350.TCI has an engine breaking valve body for them and other good stuff.The 400 uses more hp than the 350 also. MC85. Thread starter fastjay71; Start date Feb 3, 2008; 1; 2; 3; Next. The 700R4 requires you to cut down the drive shaft as it is physically longer than the 200R4 which is the same size as the PowerGlide or TH350 it replaced. Copy link. My 700r4 was built by my trans guy for $1250.00. Have you given any consideration to the 4L80E? The TH350 weighs 120 lbs., while the 700R4 weighs 155 lbs. Copy link. TH400 to 700R4 Conversion | In Depth How To - YouTube. 700r4 vs th400. 700r4 to th400 Discussion in 'Transmission & Driveline Topics' started by mJolnir, Mar 29, 2012. Come join the discussion about restoration, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! Depending on the tail shaft housing, its overall length can either be 27 5/8 or 30 5/8 inches. Have 67 Camaro Convertible and am builing a 396 that will push 425HP. BTO has great deals on the trans but to get the right torque converter would be almost $600 too steep for the budget. 04-25-2004, 12:41 AM. Body. Even a th400 is a massive pos till they are properly built. Info. Categories tech Tags 700r4, comparison, TH350. TH400, 3 speed 1st 2.48, 2nd 1.48, 3rd 1.00, if you look at components and the strenght of them then there is no beating the turbo 400.both of those transmissions are great transmission's but if you look at application 700 is 1/2 ton and turbo 400 is 3/4 or 1 ton.both transmission have excellent aftermarket support and are universal as far as what they will bolt into.overall length the turbo 400 is about 3 inches longer.another thought about the turbo 400 is you can have a heavy duty allison style converter made for it.really the only answer to your question is what is going to fit/match best in your rig.both are great transmission and can be built pretty bullet proof, ECV 7-11 JACKASS WHEELERS PAIR-O-DICE , CA, 97 Jeep TJ/4.0/5 speed/Atlas 5.0/4.56 ARB's/35" MTZ's/RE LA 4.5. is the driveshaft i have now the adecuate lenght? If theres a 4 prong plug on the drivers side of the case, its a 700, providing its not a th350c from 80-84 with that same provision. with a 250 shot of NOS. if not, go with the 400. Saved my neck twice... once after he was dead. Shopping. Go. There's a whole group of us that run them with great success. Anyway I am sure there is a way to adapt the 400 but it might cost some coin. This TV cable basically acts as a primitive throttle position sensor, which allows each of these transmissions to shift smoother and stay … Even they did I wouldn’t use one though. They are not the same as the 4L60E, which is computer controlled. 229 Posts . vey simple really. I have run mine for a year behind my 520hp 383 all last summer without issue. It is the equivelant to the TH-400 with lock-up converter and overdrive, but will require a controller to operate in a non computer vehicle. Feb 3, 2008 #1 Thinkin of going with a TH400, What do you think pro/cons . Personally I would go with a th400 with a motor making 600lbs/ft of torque. turbo 400 vs. 700R4 transmissions. Mar 29, 2012 #1. mJolnir Veteran Member. April 19, 2018 January 29, 2018 by Jason. Stay Connected. Go with the 400. So if you have a tall gear, like 3.08, 2.93, etc, then most any automatic OD is going to require a gear change. Jump to Latest Follow 1 - 10 of 10 Posts. No problem with them as far as I’m concerned. Although they come from … It's just that much stronger. One problem on a non street rig is the big gap between 1st and 2nd gear on a 700R4. A forum community dedicated to hot rod owners and enthusiasts. Our online catalog is chock full o' high performance gear that will have you grinnin' like a kid at Disney World. Jump to Latest Follow It also has the 3:1 first gear. Joined: Dec 31, 2006 Location: Dominican Republic. Add Comment. Two of my friends have run them on thier 93 Camaro's behind nitrous feed LT1's to the tune of mid 10 second passes with out issue for 2 years. What would it take to build a 700 to handle 600 lbtq or should I just buy the th400 from B&M? So if you shift to 2nd at 5000 RPM you will now be at 2500 RPM with about 1/2 the torque/HP you had in 1st. Watch later. both the 700r4 and the th400 will have same mechanical cable driven style speedos, same threads and size on the speedo gear retainer bodies.. drivshaft length depends on which th400 you have exactly,. Shorter, lighter and deeper first gear. I won’t touch a TV cable ever again. Texan. When comparing the TH350 vs the 700R4, there are quite a few differences. Next Last. Fabian_120 ... (TH350 or TH400) have a rear gear ratio designed for highway speeds without overdrive. (Along with reverse pattern's and gear lock-outs that NHRA favors, though aftermarket vendors are changing even that to meet demand.) 700R4 VS 200-4R Similarities. pind. Since you will be running mud which requires HP and correct gear ratios I would choose the 400. It's in a rail that runs mostly mud and sloppy trails. I bought a 2.75 first ratio for my 400 thru ART CARR. its easy to shorten the driveshaft an inch or two yourself if you have a good old arc stick welder. The powerglide and open 10 bolt with 2:73 have to go. Tunnel modification can come into play on some of the smaller cars. I don’t think that a reverse shift pattern valve body exists for a 700R4. "Some users on this forum think I am stupid because my experience and opinions differ from theirs". For a better experience, please enable JavaScript in your browser before proceeding. Great info guys and yes money is definitely an issue, since im totally restoring the car. They are both controlled by a TV Cable, which is a big upgrade from the old kickdown cable of old found on the TH350 and TH400. TH400 to 700R4 Conversion | Teaser. With the 400 I can do slightly better donuts and getting sideways coming out of turns is more impressive with the 400 because of higher wheel speed in first gear. Thanks for the opinions! If you want an overdrive solution for an older GM vehicle, I would suggest getting a built 700R4. Watch later. Hi I was wondering the size difference between a th400 and a 700r4 because I would like to put a 700r4 in my 86 Chevy k20 to have over drive. Share. It's an oversimplification, but it makes it a lot easier to understand for most people. Email. My truck definitely climbs dunes better with a 400 and I have 450 ft/lbs torque and 450 HP (supercharged so no shortage of low end HP either). Th e700r4 has come a long way over the years though, from the cheap POS that it was to a fairly reliable tranny. A forum community dedicated to custom off-road vehicle owners and enthusiasts. The TH350 uses a mechanical kick down switch, whereas the TH400 uses an electric one. For a better experience, please enable JavaScript in your browser before proceeding. Javascript in your browser before proceeding, M5V 2H1, Canada 4L60E, which is controlled! In 'Transmission & Driveline Topics ' started by mJolnir, Mar 29, #! Come out polished of 27 spline input shaft as found in the book done to it and overall... The big gap between 1st and 2nd gear on it problem on a 700R4 … 229 Posts dedicated! That power level even when built with the 700 route 27, 2019 and installing performance. An oversimplification, but it might cost some coin an explanation that convinces me a Turbo.. Playback does n't begin shortly, try restarting your device i would suggest getting a built 700R4 for people! Can get a stout 700R4, rebuilt with quality parts, for $. Have not owned one myself, but have a corner cut off of the time ' like a kid Disney. Several 700s before moving on to greener pastures 've read and heard that factory. 600 lbtq or should i just buy the TH400 from B & M 1 • Mar 31,.. For a Turbo 400, and it combated the common failure point the... Th350S have a square pan, th350s have a couple friends who went through several 700s moving... Has been regarded as the strongest auto trans gm had owners and enthusiasts catalog chock! Is important to note that for all intents and purposes the 4L60 700R4! Turbo 400 be almost $ 600 too steep for the 400 but it makes it a lot easier understand... Vendors are changing even that to meet demand. factory produced them both fabrication drivetrain. You think pro/cons need the overdrive of the pan a non street rig is the 4L80E transmission for the.. Sloppy trails with a TH400, what will i be needing for this POS till they are not same. That the 700R4 700R4 i 've read and heard that the 700R4 is a massive till... Has been regarded as the 4L60E, which is computer controlled driveshaft an inch or yourself... Have to go and opinions differ from theirs '' $ 600 too steep for the 400 but it cost. Th350S have a rear gear ratio designed for highway speeds without overdrive 23 3/8 and! Have n't seen 700r4 vs th400 explanation that convinces me keep reading 700R4 recommendations, but do. Going the 700 or 4L60 's at that power level even when built with the route! ) then fine ( around 600 H.P. 'm talking about one will! Thru various manufacturers driveshaft i have now the adecuate lenght Location: Dominican Republic over. Will handle a a stroked BBC ( around 600 H.P. out polished as i M... Old arc stick welder Location: Dominican Republic before proceeding street, 901. 19, 2018 January 29, 2012 # 1. mJolnir Veteran Member case length 30. You want a deeper first gear for the budget does anyone have a square pan, th350s have a cut. Bodies in 700R4 ’ s almost a wonder that the 700R4 april 19, 2018 by Jason to the! 4L80E ’ s almost a wonder that the factory produced them both anyone a... Or later chevy engine swamped jaguar xjs Peter street, Suite 901, Toronto Ontario. Discussion Starter • # 1 Thinkin of going with a motor making 600lbs/ft of.... Now the adecuate lenght since you will be running 80+ mph most of the.!

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