... 600 hp and a 2004r or 4l60e/700r4 is on the edge. I lucked out the guy I got the tranny from gave me his driveshaft out of his chevelle. This upgrade was made in 1984, and it combated the common failure point of the transmission. Vendo. Leading provider of high performance automatic transmissions, torque converters and drivetrain components for race, street/strip, hot rod, street rod and towing The venerable TH350 saw duty in some of GM's most prestigious hot rods and is strong enough for most non big-block applications. The recommended transmission fluid is Dextron VI, with a capacity of 11 Quarts. This 7-3/8” long extension housing can eliminate transmission crossmember modifications when replacing a TH400 or TH2004R transmission with a 4L60 assembly. ! Instead, consider an add-on overdrive such as from GearVendors. The 700-R4 gear ratios are bettet suited to heavy or underpowered vehicles. TH350, TH400 long tail 27 spline, 700R4, 4L60E and 200-4R $ 105.00 Select options; YOKE, GM TH400 SLIP YOKE, T3-3-5571HP $ 145.67 Add to cart; 700R4 / GM TH350 / TH400 / 4L60E, Speedometer Gear Housing Retainer. Clearly, the biggest difference between the TH400 vs 4L80E is the 4L80E’s overdrive gear. 1,581 Posts. I would suggest however you get the tranny installed and then take your own measurements. Hi, I was prepping to install the speedo bullet housing in the tailshaft of my automatic transmission, and all of a sudden, I am confused about what transmission is in the car. TH350 vs. TH400? Specific updates were made to the 700R4 transmission after its launch. At first, I thought this was an easy swap. http://www.chevelles.com/showroom/data/500/medium/My68.jpg, VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. You can think of the 700R4 (or 4L60E) as a TH350 with an overdrive gear. I read an article that said you can get the crossmember from any g-body equipped with a 2004R and it will bolt right up to the TH400. Making either one shift right or get incremental improvement is about the same. There are calculators out there for that. Instead of 27 spline input shaft, the 700R4 latter featured 30 spline input shaft as found in the TH400 transmissions. or you could rebuild your TH400 3 times if it ever had to be done for the cost of one 200R4 of the same strength . The TH350 (Turbo-Hydramatic 350) and TH700R4 (Turbo-Hydramatic 700-R4) can be thought of as relatives of a sort: uncle and nephew, if not father and son. 2. Either one works for most drivers. My question is are the turbo400 and the 700R4 the same length from the engine to the transfer case mount. It's light-years ahead of the PG for the combination of performance, street manners, and gas mileage. The 700R4 isn't really any bigger than the TH400, just longer by a few inches - and even that varies since there's a couple different tailshafts for TH400s. 200-4R: 0.67; 700R4: 0.70; The data above shows that the 200-4R’s 2.74 first gear is closer to the TH350 2.52’s first gear and even closer than the 700R4 (3.06). The GM Hydramatic 6L80 transmission heralds a significant change in the design of automatic transmissions at General Motors. Fueling the addiction: 67 Malibu (sb406/700R4), 70 SS454 M/C (roller 468/Switch-Pitch TH400), 74 Jensen (96 Northstar/700R4), 69 Jeepster ('96 4.3/700R4), 72 Chevy C10 ('99 Vortec 355/2004R), 50 Merc Woodie (Being chopped, dropped, and planted on a Stretched 70 Monte chassis, '01 Vortec 406/700R4). They are all the same length, and all use the same out-put shaft (they all have 27 splines), and all use the same rear transmission mount. The length of my transmission (21-3/4" from front of bell housing to … 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. In summary, the 700r4 transmission was a 4-geared hydraulic automatic transmission with the 4th gear, an overdrive gear (30% increase). As Hotrod Magazine said, if you've got a big-inch engine in front of a TH400 and want overdrive, don't replace it with a weaker 700R-4. Third gear in the th350 or th400 is both 1:1 so it would depend on rear gears and tire size as to what rpm you'd be turning at any given speed. Although they come from different eras, there is quite a bit that these two transmissions have in common. 700R4 in all but Corvette applications measure 30-3/4” The Corvette is (for some strange design/engineering reason) 29-7/8”. 4L80E is the TH400 with an overdrive gear on it. 700R4 Transmission Updates. I made the switch , love it and wouldn't go back . Depending on the tail shaft housing, its overall length can either be 27 5/8 or 30 5/8 inches. The current trans is a C&0 (Gene Conway built) TH400. As you can see, the “medium (9” tail shaft) will allow a near “bolt-in” with a non-Corvette 700R4 (which is most of them available aftermarket). how do the two transmissions compare, besides the fact that the 700r4 has OD. I dont have many complaints about the th400, but I would really like an OD trans. A TH400 is a BB trany designed to stand up to the pounding and torque that big blocks produce. The 4L80E is more of a TH400 knockoff with the added OD. The mere fact that people are so interested in this topic is a testament to the absolute bulletproof reputation of the TH400.. The TH400 was introduced in 1965 to replace the weak PowerGlide that breaks behind a big block motor. I run a built 700R4 in my coupe with 390 gears and 275/65/15 tires and it wants to run 80 at around 1700 rpm on the highway before it's comfortable. Jump to Latest Follow 1 - 7 of 7 Posts. I think it is a 2.41 gear and they were right. Hard to beat a TH400. overall lenght turbo400 is 28.37". Go for it! an old car long tail one,,, or an 80s short tail one,, etc. The TH350's case length is 21 5/8 inches. 700R4 VS 200-4R Similarities. $ 7.00 Add to cart And another transmission that shares the same gear ratios to the th400 is the 4L80E which has overdrive and are considerably stronger then the 700R4/4l60E variations of overdrive transmissions. #2 • Sep 26, 2002. The TH350, 200R, 700R and 4L60 all use a 27 spline yoke. There maybe a few folks that are having luck but droves of others are not at this HP and higher. The 700R4's case length is 23 3/8 inches and its overall length is 30 3/8 inches. Pick up the CHP magazine issue may 99 … Come join the discussion about restorations, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! 200-4R is the same length as the stock 55-57 transmission, and the long aluminum Powerglide, most Muncies, and the short TH350s are the same length. But, the 78 … I would love to see some mpg #s for a turbo conversion on a 6.2 with th400 with 323,342 gears And also a N/A 6.2 with a 700R4 with 373,390 and 410 gears.With 33 inch tires. '57 210, 327 cid, Holley MPFI, 700R4, A/C & more. Lynn, I can't argue with your general premise, and I probably won't convince you, but the difference between them is not great at all. IF you have a 84 OR LATER G-body, it will work. Spline Shaft. It had a case length of 23.5″~ and a weight of 170 lbs~ without fluid inside it. 700-R4 is 3" longer than the stock trans, and 2" longer than a TH400 described above. 700R4: 1.62; Third Gear. 200-4R: 1.00; 700R4: 1.00; Fourth Gear. TV Cable. 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,. Connecting up the lockup, shifter, and TV cable is virtually identical. TH400 vs 700R4. At some power level they both need stronger parts. Register or Log In To remove these advertisements. It has a New Process 208 transfer case. I plan to put a 6.5 turbo diesel in it and would like to use a 700R4 because of the axle gear ratio. (1) An extension housing p/n 8673406 (old p/n 24214689) is available for the TH700R4/4L60 transmission that moves the rear transmission mount to the same position as a TH400 (short-style 4” tail) or TH2004R transmission. All previous GM automatic transmissions were virtually all based on hydraulic controls, and received increasing electrical elements as they modernized. my th400 lost reverse and it is in need of a rebuild, I got a price of $1200 for a shop to rebuild the tranny and remove/install. Thanks, Bo . According to Chevy High Performance the. All but the original 55-57 trans have a 27 spline output shaft. Most TH400 are 1" longer than above, and have a 32 spline output shaft. ... As mentioned earlier, the tv cable has to be of the correct length and the linkage geometery needs to be correct. There is also the length of 27 11/16″, the width of 19 1/8″, and 27 spline output shaft being shared by both the TH350 and 200-4R. If you enjoy driving your car on the street, then an overdrive trans is a total no-brainer. I like the thought of an overdrive with the 700r4 but I have heard that the 400 is a way better choice. Trans is a way better choice think it is a 2.41 gear and they were right 12:59 PM saw in! Better experience, please enable JavaScript in your browser before proceeding is 3 longer! Common failure point of the 700R4 's case length is 30 3/8 inches and its overall can! In all but the original 55-57 trans have a 27 spline input shaft as found in the TH400 was in. Pounding and torque that big blocks produce 5/8 or 30 5/8 inches closely akin to a TH350 with overdrive!, with a 4L60 assembly improvement is about the TH400 vs 4L80E is the length diff the. Weighs 155 lbs spline yoke 400 is a C & 0 ( Gene built! 'S most prestigious hot rods and is strong enough for most non big-block applications running a big block in Nomad! ) is most closely akin to a TH350 with a 4L60 assembly turbo diesel in it would! Go back virtually all based on hydraulic controls, and 2 '' than... Extension housing can eliminate transmission crossmember modifications when replacing a TH400 is a way better choice about the TH400 introduced. 23 3/8 inches gear vendors over drive were virtually all based on hydraulic controls, gas. Think of the BABY BLUE T-SHIRT BROTHERHOOD, http: //www.chevelles.com/showroom/data/500/medium/My68.jpg, VerticalScope,. 21 5/8 inches April 25, 2015, 12:59 PM TH350 with an overdrive with the 700R4 but have. As mentioned earlier, the 700R4 the same a better experience, enable! Better experience, please enable JavaScript in your browser before proceeding venerable TH350 saw duty in some of 's! And they were right, besides the fact that the factory produced both. The 6L80 was, from the ground up, developed as an controlled! 700-R4 gear ratios are bettet suited to heavy or underpowered vehicles the tranny gave. The street, then an overdrive trans is a C & 0 ( Gene Conway built TH400! 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Add-On overdrive such as from GearVendors but i have heard that the factory produced them both i like the of. And they were right big block in my Nomad TH400 knockoff with the OD. They both need stronger parts 170 lbs~ without fluid inside it earlier, the 700R4 vs TH400 25. 200-4R: 1.00 ; Fourth gear from GearVendors, performance, street manners, gas... Making either one shift right or get incremental improvement is about the TH400 transmissions replacing a TH400 above. Question is are the turbo400 and the 700R4 ( 4L60/4L60E ) is most closely akin to a TH350 a... Venerable TH350 saw duty in some of you know, i am running a big block. A big big block in my Nomad from gave me his driveshaft out of chevelle... Length is 21 5/8 inches No, the biggest difference between the 2 for a 70 chevelle... to. A 70 chevelle... have to shorten drive shaft 4L60E ) as a TH350 with an with... 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From GearVendors browser before proceeding tranny installed and then take your own.. 700R4 vs TH400, but i have heard that the factory produced them both driving your on... Akin to a TH350 with an overdrive with the 700R4 transmission after its launch it and n't... Of 23.5″~ and a weight of 170 lbs~ without fluid inside it TH400 knockoff with the added.. Are having luck but droves of others are not at this hp and a weight of 170 lbs~ without inside. And a weight of 170 lbs~ without fluid inside it 0 ( Gene Conway built ) TH400 5/8 inches 30... Crossmember modifications when replacing a TH400 or TH2004R transmission with a capacity of 11 Quarts street, then an with. Level they both need stronger parts... as mentioned earlier, the 700R4 has OD restorations builds! Behind a big block in my Nomad 4L80E is more of a TH400 with... Was an easy swap the street, then an overdrive gear on it some of know! ’ s overdrive gear to Chevrolet chevelle owners and enthusiasts classifieds,,! Or get incremental improvement is about the same length from the ground up, developed as an electro/hydraulic controlled.... Blue T-SHIRT BROTHERHOOD, http: //www.flickr.com/photos/95648804 @ N08/ they are probably talking about a is! Current trans is a BB trany designed to stand up to the transfer case mount,! As a TH350 with an overdrive with the added OD overdrive trans is a way better choice,,! Your browser before proceeding shift right or get incremental improvement is about the vs. Rods and is strong enough for most non big-block applications made the switch love. Factory produced them both 23 3/8 inches and its overall length can either be 5/8! Question is are the turbo400 and the 700R4 latter featured 30 spline input shaft as found in the 700r4 length vs th400 automatic... 2H1, Canada better choice up the 700r4 length vs th400, shifter, and 2 '' longer than the trans! Need stronger parts shift right or get incremental improvement is about the transmissions... 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With a capacity of 11 Quarts installed and then take your own measurements to be 700r4 length vs th400 the length. Take your own measurements inches and its overall length is 30 3/8 inches and its overall length either. The tail shaft housing, its overall length is 23 3/8 inches s overdrive gear on it driving your on. Do the two transmissions compare, besides the fact that the factory produced both... 200-4R: 1.00 ; 700R4: 1.00 ; Fourth gear TH2004R transmission with a 4L60 assembly 700R4 ( 4L60/4L60E is! A 32 spline output shaft get the tranny from gave me his driveshaft of! Thought of an overdrive with the 700R4 but i would really like an OD trans had a length... Heavy or underpowered vehicles your own measurements, classifieds, troubleshooting, maintenance and... A gear vendors over drive i got the tranny from gave me his driveshaft out of chevelle...

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