Sale!
 
Rated 5.00 out of 5 based on 5 customer ratings
(5 customer reviews)

Muncie Super Duty M23 Super Case 4-speed Road or Drag Racing Rock-Crusher. ON SALE! HOLIDAY SPECIAL THIS WEEK! $400 discount!!

$ 3,000.00 $ 2,599.00

Severe Duty M23 gearboxes feature enlarged steel ‘thrust button’ case assembled modular countershaft clusters with ground drive gears, unit cage needle bearings, integral countershaft spacer tubes and carbonitrided over sized synchronizer hubs. Slick Shift 18 spline hardened sliders. Small pad Crowned Steel Forks. Welded Shift Shafts. Forged Brass blocker rings. Main drive oil seal input shaft and bearing retainer. 34 tooth 1st super strong 1st gear (stronger that the M22 1st gear). C355 Forged Aluminum mid plate. Lightened main shaft for less rotating mass. The M23 is the strongest Muncie style 4-speed available.

SPECIAL RUNS THIS WEEK. CALL JEFF (262)893-9812 for details.

CALL JEFF FOR SPECIAL SALE PRICE AND RATIO APPLICATION = 262-893-9812

Complete gear polishing available for road racing and serious competition;

M23 CLOSE RATIO, m23w WIDE RATIO AND m23z RATIO

GEAR POLISHING $150

MANY DIFFERENT RATIOS AVAILABLE. CALL JEFF FOR ALL THE DETAILS TO THIS SUPER SERVE DUTY M23.

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5 reviews for Muncie Super Duty M23 Super Case 4-speed Road or Drag Racing Rock-Crusher. ON SALE! HOLIDAY SPECIAL THIS WEEK! $400 discount!!

  1. Rated 5 out of 5

    louis carbone

    have one in my 64 tempest 480 inch Pontiac shifts great great sound exel service

  2. Rated 5 out of 5

    Paul Miller

    I just got my m23z for my 1970 Gto and the transmission is amazing. I can’t say enough good things about Jeff and this transmission. Excellent customer service and extremely knowledgeable. He spent over a hour just answering my question and never pressured me buy. I will be a repeat customer for sure

  3. Rated 5 out of 5

    Paul Miller

    I just got the m23z in my 70 GTO and I can’t say enough about the transmission. Jeff is very knowledgeable and extremely helpful. I will be back for more transmission.

  4. Rated 5 out of 5

    Shawn Riley

    Recently installed this Midwest Muncie M23 in my 72 Buick Skylark with a 462 big block. Very nicely built piece with positive shifts. The gear ratios as spec’d by Jeff are perfect for my rear end gearing/tire size combination. No more worries about breaking that old stock cased Muncie with sticky tires!!! Had a bit of a lead time, but worth the wait. If a transmission builder is that busy, there’s a reason for it…

  5. Rated 5 out of 5

    Dave

    Ordered my M23 in November and can’t wait to hook up between a ZZ502 and a new 9″Ford rear end. I hope she whines and whines sweet music all day long, no radio needed!
    Ordering was a breeze with Jeff

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