| Publisher | CarTech (October 21, 2014) |
| Language | English |
| Paperback | 144 pages |
| ISBN-10 | 1613251068 |
| ISBN-13 | 978-1613251065 |
| Item Weight | 1.05 pounds |
| Dimensions | 8.5 x 0.38 x 11 inches |
| Best Sellers Rank | #261,838 in Books (See Top 100 in Books) #111 in Automotive Engine Mechanics #533 in Do-It-Yourself Home Improvement (Books) |
| Customer Reviews | 4.8 out of 5 stars 282Reviews |
Muncie 4-speeds need rebuilding after many miles of service and extreme use. In addition, when a muscle car owner builds a high-performance engine that far exceeds stock horsepower, a stronger high-performance transmission must be built to accommodate this torque and horsepower increase. No other book goes into this much detail on the identification of the Muncie 4-speed, available parts, selection of gear ratios, and the rebuild process.
Webbing has been added to late-style extensions (casting PN 3857584). The passenger-side speedo tailhousing is always desired because it gets the driver-side speedo away from the linkage. Looking for the webbing is an easy way to recognize the casting when looking for parts.
Webbing has been added to late-style extensions (casting PN 3857584). The passenger-side speedo tailhousing is always desired because it gets the driver-side speedo away from the linkage. Looking for the webbing is an easy way to recognize the casting when looking for parts.
First-gear power comes in from the input shaft, travels down into the countergear, and up through first gear. The slider is moved toward first gear, engaging it and locking it to the output shaft via the 1-2 synchronizer assembly. (The yellow line indicates the path and the blue arrow marks the direction of power flow.)
This is a completed SPEC-25. The special Teflon coating reduces internal friction and heat: The exterior becomes a non-stick surface and gasket surfaces clean up very quickly. Plans are in the works for new-style NASCAR synchro assemblies and more ratios, so a SPEC-35 will most definitely be in the future!
The snap-ring groove often stretches out in the midplate. Inspect for cracks on the forward face. If a driveshaft is too long, usually this area cracks open from the driveshaft yoke bottoming out on the transmission’s mainshaft; it wants to blow the rear bearing out the front of the midplate.
Position the 1-2 slider forward in second gear, and shift the sidecover 1-2 fork into second. You need to be in second gear to clear the reverse idler case boss.
This is a complete AGE modular M23 gearset. This is what I use to build my Drag Special 4-speed. It has a 9310–nickel alloy modular stub shaft and sealed front input shaft. The tapered design of the input acts as a torsion bar, absorbing shock loads. I have never had this input shaft break, even when the Muncie is mated to an 800-hp engine. This is fitted in a thrust-button case.
