Gm 700r4 transmission1/6/2024 ![]() ![]() The only other difference I have found here is that the torque convertor cover (dust cover) for the 4WD version was made of cast aluminum instead of stamped steel or molded plastic, and it used much larger bolts to attach to the transmission, as it also made provisions to attach strut rod re-inforcement's from a bracket that mounted under the motor mounts to the lower portion of the cast aluminum dust cover. The TH-700R4 was also offered in a 2 wheel drive version AND a 4 wheel drive version- the difference here being the 2WD had a longer tailshaft and a housing including a bushing to support it along with containing a speedometer drive housing, the 4WD version had a much shorter tailshaft which was to be supported by the adapter and transfer case input shaft bearing, the 4WD speedometer was driven from within the transfer case rear output shaft housing. The TH-700R4 was never factory installed behind anything larger than the 6.5 liter diesel. This bellhousing pattern was also used for the 6.2 and 6.5 liter V-8 diesel engines, and it will also directly bolt up to the 3.3 liter 200 cubic inch, the 3.8 liter 229 inch V-6, and the 4.3 liter 262 cubic inch engines.Īnd then there was the smaller bellhousing bolt pattern used on the 2.5 liter (151") 4-cylinder, the 2.8 liter (173") V-6, and the 3.1 liter (189") V-6 engines. ![]() The 700 came in two bellhousing bolt patterns, the standard "Chevy" which includes all smallblock engines from 262 to 400 cubic engines (and the later "Vortec" series engines and their derivitives), the big blocks from the truck only 366 to the 502, and the new ZZ572. It was introduced to the larger car (B-body, and similar), and truck lines as the TH-2004R was introduced to the car line, the 200 was given a "universal" bellhousing bolt pattern for it's ability to bolt to different engines (both the Chevy and B-O-P-C engines). The Turbo-Hydramatic (TH) 700R4 automatic overdrive transmission was introduced to Chevrolet vehicles in 1981 for the 1982 model year vehicles. I had hoped I would get more attention than I have on this subject, and since I had not as of yet I am adding a few more tidbits to the thread. If anyone has a question about this subject in the future after we have deemed this thread a success in knowledge, then hopefully they will find their answer here.īring on the Chevrolet overdrive automatic everyone loves to hate. Remember, share as much information as you can about this transmission, including pictures, diagrams, links to other sites, and text. I have very limited experience with this particular transmission, so I will learn a few things myself. We DO NOT want to bad mouth this transmission in this thread, just inform as best we can, everyone has an opinion, but at times some opinions just need to be kept hushed. I have thought about this and will leave this post open UNTIL the first irrevelant post I see, at which time I will lock it and all responses to this subject will need to be sent to me, Crosley, or Jon via Private Message, at which time one of us will update the thread with the supplied information. This thread is meant to inform and educate about the TH-700R4 transmission. This thread is part of a project brought about by our administrator Jon, and the rest of the moderators here on. ![]()
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