Use the following information to compare physical description of your Chevrolet or GMC manual transmission in order to identify what model transmission is in your vehicle.  We offer quality rebuilt manual transmission, parts and rebuild parts kits that are designed to be top of the line.  After locating correct unit a link is supplied to provide detailed information on specific kit and parts that are available for your unit. Information is provided for General Motors 3 speed, 4 speed ,  5 speed and 6 speeds manual transmissions.

 

GENERAL MOTORS 3 SPEED TRANSMISSIONS:
Transmission Manufacture	Model year and Physical Description	Find Parts
MUNCIE (Light Duty)	1940-63 Cars, 1940-68 Light Duty Trucks:	Parts List	74
	Cast iron case and extension housing with 4-bolt side cover. Has non-synchro 1st and a "barrel" type 2/3 assembly. Units from 1940-54 have enclosed driveline, otherwise known as a "torque tube". Those from 1955-68 may have electric overdrive. Some of 1964-65 units have larger gears with the same tooth count as the 1940-68 units.
SAGINAW	1966-81 Cars, 1966-87 Light Duty Trucks:	Parts List	92
	Cast iron case and extension housing with 7-bolt side cover. Fully synchronized with 30 tooth synchro rings. 1966-69 units may have electric overdrive. It has a four step cluster and all the gears are helical cut.
BORG-WARNER T16	1965-68 Cars, 1968 Trucks	Inquire
	Cast iron case and extension housing with 9-bolt side cover. Fully synchronized with 27 tooth 1st gear and 36 tooth 2nd & 3rd gear synchro rings. Has case casting number T16-1X. Found in heavy duty applications.
MUNCIE (Heavy Duty)	1969-74 Cars, 1969-76 Trucks	Parts List	75
	Cast iron case and extension housing with 7-bolt side cover. Fully synchronized with 36 tooth synchro rings. This is the only GM 3 speed with the same bearing front and rear. This transmission is found in performance applications.
TREMEC T160	1976-81 Trucks	Parts List	106
	Cast iron, top-loaded case with side shift linkage. Fully synchronized with 36 tooth synchro rings. Same unit as Ford RAT except for a GM bolt pattern to the bell housing. Has R28-20-15 cluster gear. Found in heavy-duty applications.
GENERAL MOTORS 4 SPEED TRANSMISSIONS:
BORG-WARNER T10	1957-88 Cars, 1968-70 Vans	Parts List	39
	Cases, extension housings and side covers may be cast iron or aluminum and in any combination thereof. Casting number T10-XX or 13-04 are on passenger side of case. They all have 9-bolt side covers and 36 tooth synchro rings. Reverse shift lever is located in the extension housing, along with main shaft reverse which is a straight cut gear. Some of the early units, found mostly in Corvettes, have a front nut like the Muncie M21. 1984-88 units have overdrive.
MUNCIE M21/M22	1963-74 Cars	Parts List	76
	Aluminum case, extension housing and side cover. The side cover has 7 bolts and 2 shifter cams. The synchro rings have 36 teeth and the unit has a 4-step cluster gear. Reverse gears are helical cut and are located in the extension housing.
SAGINAW	1966-84 Cars, 1985-86 Astro/Safari	Parts List	92
	Cast iron case, extension housing and side cover. The side cover has 7 bolts and 3 shifter cams. The synchro rings have 30 teeth and the unit has a 5-step cluster gear. Reverse gears are straight cut and are located in the main transmission case.
VEGA/OPEL	1971-72 Vega, 1968-74 Opel	Not Available
	Cast iron case with a flat pan on the bottom and shifter linkage that has one arm on each side of the trans. Shifter assembly is attached to the top of the extension housing where the two arms meet.
BRAZIL 70mm	1977-87 T Body and H Body (Chevette/T1000) Order K100134
	Aluminum case, bell housing and extension housing. The main case is open at both ends, the bell housing. is separate and houses the two front bearings. There is an internal single-rail shift linkage with the shifter mounted on top of the extension housing.
BORG-WARNER T4C	1982-84-Compact Trucks	Parts List	43
	All aluminum top-loaded transmission with the shifter on the top of the extension housing with an internal single-rail shift linkage. Front and rear main bearings are ball type and the cluster gear has a shaft running through it, that is supported by loose needles. Case casting is number 13-53.

BORG-WARNER T4	1983-84 Cars, 1985-87 Compact Trucks	Parts List	43
	All aluminum top-loaded transmission with shifter on top of the extension housing with internal single-rail shift linkage. Front and rear main bearings are tapered. The cluster gear is solid and is supported on each end by cylindrical roller bearings located in the case. Case castings numbers are 13-51 or 13-52.
ISUZU M73	1982-87 Compact Trucks	Parts List	53
	Aluminum end-loaded transmission with integral bell housing. The Isuzu logo is cast into the left side of the case. Produced for the S10/S15 trucks with GM and Isuzu engines. Is not found in the Chevy LUV. It has a rectangular cast iron front bearing retainer and a 27 tooth rear output shaft. The front and rear countershaft bearings are both 25x62x17.
NEW PROCESS 440/MY6	1981-87 Light Duty Trucks & Vans	Parts List	82
	Same transmission as the A833 with Overdrive that is found in Dodge trucks. Side-loaded with either aluminum or cast iron case and used in both gas and diesel applications. Reverse on the main shaft is on the 1/2 slider. All of these units are 3 speeds with Overdrive.
MUNCIE SM420	1948-67 Trucks	Parts List	77
	Top-loaded, tower-shift "granny-low" transmissions found in light and heavy duty applications. Cast iron case with cast iron top cover . Non-synchronized 1st, but has only brass type synchro rings for 3rd/4th. All gears on the countershaft are removable except for 1st. Early units have threads on the input shaft and do not have a front seal. Has GM casting numbers and one P.T.O. covers.
MUNCIE SM465	1968-91 Trucks	Parts List	78
	Top-loaded, tower-shift "granny-low" transmissions found in light and heavy duty applications. Cast iron case with cast iron top cover from 1968-87 and an aluminum top cover 1988-91. Non-synchronized 1st with brass synchro rings for 2nd-4th. All main shaft gears ride on bushings pressed on the shaft. The only gears that are removable from the countershaft are 3rd and 4th. Has GM casting numbers and two P.T.O. covers.
NEW PROCESS 435	1964-72 Trucks	Parts List	83
	Top-loaded, tower-shift "granny-low" transmissions with cast iron case and a rectangular aluminum top cover. Main bearings may be either ball or tapered design. Non-synchronized 1st gear, synchronized 2nd-4th. The synchro's are aluminum ring/pin assemblies and 3-4 has "pie plates". There are no brass synchro rings. Casting number is C-9XXXX.
NEW PROCESS 4500	1967-72 Heavy Duty Trucks	Inquire
	Same design as NP435 but is fully synchronized. All gears, including reverse, are helical cut. See New Process 435 for more information. Casting number is C-9XXXX
GENERAL MOTORS 5 SPEED TRANSMISSIONS:
BORG-WARNER T50	1976-79 Compact Cars (Monza, Skyhawk, etc)	Inquire
	Aluminum end-loaded case with the bearing retainer being cast as part of the main case. The bell housing. is not part of this transmission. It has a removable tube that the throwout bearing rides on. The main bearing in this unit is comprised of caged needles in shell races. Loose needles and flat thrust bearings are used throughout the transmission. Casting number is 13-38. Limited parts availability.
ISUZU M75	1981-86 Chevette & T1000 Diesel, 1979 Luv.	Parts List	54
	Aluminum case, end-loaded unit with an integral bell housing. Isuzu logo is cast into the drivers side of the case. This is found only is GM diesel applications and has a different starter position than the unit that goes into the Isuzu vehicles.
BORG-WARNER T5	1982-87 Cars, 1982-92 Compact Trucks & Vans	Parts List	44
	This 5-speed is based on the T4 Design. Aluminum case with top cover, internal single-rail shift with the shifter mounted on the extension housing. Casting numbers on the case, cover or extension housing are 13-51 or 13-52. 5th gear (overdrive) is located at the rear of the transmission in the extension housing. The cluster gear is supported on both ends by cylindrical roller bearings. The number on the front cluster gear is DK55836. All five synchro rings are brass.

BORG-WARNER W/C T5	1988-96 Camaro/Firebird, 1993-95 Compact Trucks	Parts List	44
	Improved version of B/W T5. Similar physical appearance and is best to remove the top cover in order to distinguish between the two. If you are unable, you can check the number of the front cluster bearing. The W/C has tapered bearings supporting the cluster gear. The number on the front cluster gear bearing is 67010BCE. The 1/2 synchro's are three piece assemblies with a lined cone in the center. The 3/4 synchro's are black with a lining on the inside. The T5 and W/C T5 are interchangeable units as a whole but internal components are not.
HM290/5LM60/NV3500	1988-96 Full Size Trucks, 1990-96 Compact Trucks Order K100319	Parts List	50
	Aluminum end-loaded case with integral bell housing. and a "waffle" pattern cast into the case. These similar transmissions have three different designs and designations. Teardown is necessary before ordering rebuild kit as the differences between them are integral.
NEW VENTURE 4500	1992-96 Full Size Trucks Order Km100319	Parts List
	Cast iron case with aluminum top shift tower assembly and a separate bell housing. It is a fully synchronized Overdrive transmission (including reverse). It may be identified by a tag attached to the P.T.O. cover. The four main supporting bearings in this unit are tapered.
NEW VENTURE 1500	1996-97 Compact Trucks with 2.2L Engine	Parts List
GENERAL MOTORS 6 SPEED TRANSMISSIONS:
S6-40	1989-1996 Corvette	Parts List
	Casting number starting with 1052XXXX