Chevy 4 speed manual transmission specs

GENERAL MOTORS “MUNCIE” FOUR SPEED 6 GROUP A: MAINSHAFT A1 Yoke Stop Snapring 27 spline mainshaft () A2 Speedometer Circle Gear L6T steel: " OD () L7T steel: " OD () L8T steel: " OD () L7T steel: " OD () L8T steel: " OD () File Size: KB. 11 rows ·  · If you’ve got a manual transmission, we’re assuming it’s a four speed, because (from what we. ,7 mm. 28". ,2 mm. 3 3/4". 95,3 mm. 20". mm. * An extension housing p/n (old p/n ) is available for the THR4/4L60 transmission that moves the rear transmission mount to the same position as a TH (short-style .

Note 3: M/22 gear ratio: 1st , 2nd , 3rd , 4th direct, Rev Effective Octo, an additional letter was added to the plant prefix number to help identify the gear ratios in Muncie transmissions. The additional letter codes as follows: Muncie 3 speed Manual. Muncie 4 speed manual transmissions. $ mail-in rebate † on the purchase of a chevrolet performance transmission within days of of the purchase of any chevrolet performance crate engine †. The heavy-duty T56 The T56 is a high-torque capacity TREMEC six-speed manual designed for custom, retro-fit installations with Chevrolet Performance crate engines. MH8 specs from GM-Powertrain website: Hydra-Matic 6T40 (MH8) Type: Six speed front-wheel-drive, electronically controlled, automatic overdrive transaxle with an electronically controlled torque converter clutch. Maximum Engine power (hp/kW) hp ( kW) Maximum engine torque: lb-ft ( Nm).

The SM is the older heavy duty, granny, 4 speed transmission used in Chevy and GM trucks. The large cast iron case with large bulge on the passenger sidemakes it easy to identify. It is an excellent 4 speed to swap into a Jeep with a Chevy or Buick engine. It will work well with any GM engine because it uses a standard GM size input bearing. RPO code M20 significances the 4 Speed version, this overdrive will have a code of “O”. These transmissions have cast iron case and tail housings, each transmission has a 7 bolt side cover, the units are full synchronized and the rings have 30 teeth.. Electric overdrives were used on some models. While the Chevy four-speed manual transmission was a staple in many muscle cars, even many of the General’s “other” car models were equipped with a manually operated gear selecting device. However, finding one of these transmissions now at a swap meet or salvage yard is getting harder and harder.