![chevrolet transmission identification chevrolet transmission identification](https://s32667.pcdn.co/wp-content/uploads/2019/12/TD200907_UpToStandards_00.jpg)
![chevrolet transmission identification chevrolet transmission identification](http://ww2.justanswer.com/uploads/heavychevy396/2010-05-08_163434_Transmission_identification_number_location.jpg)
Splines (output shaft) Pan Bolts (number of) TypeĬhevrolet Transmission Ratios Transmission Ratiosħ00R4 / 4L60E with PATC close ratio gear set. This 7-3/8" long extension housing can eliminate transmission crossmember modifications when replacing a TH400 or TH200-4R transmission with a 4L60 assembly.ĤL60E (bellhousing pattern - Chevrolet/removable) StyleĤL60E / 4L65E (w/ removable bellhousing) All LS1 Type StyleĤL80E 1991-Later (bellhousing pattern - Chevrolet) StyleĦL80E 2006-Later (w/ removable bellhousing) StyleĦL90E 2006-Later (w/ removable bellhousing) Style * 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 TH200-4R transmission. TH700-R4 /4L60 (bellhousing pattern - Chevrolet) Style TH200-4R (bellhousing pattern - BOP, Fit-all) Style TH400 (bellhousing pattern - Chevrolet, BOP) Style TH350 (bellhousing pattern - Chevrolet, BOP, Fit-all) Style Powerglide (bellhousing pattern - Chevrolet, Fit-all) Style this means that dimension "C" is usually longer than dimension "B". Note: The mounting pad is usually a part of the extension housing, but the graphic shows it on the maine case. Dimension "C" is the distance from the bellhousing to the center of the transmission mounting pad.