Is a Muncie 4 speed a good transmission?
We have mentioned several transmission swaps over the last 6 months, but another one definitely worth mentioning involves using the Muncie 4-speed. They are a very popular transmission with Chevrolet enthusiasts, and are easily adaptable for a wide range of GM and other non-GM vehicles.
Why is the Muncie 4 Speed called the rock crusher?
The M20 and M21 cluster gears are cut at a 45-degree angle. The reduced gear angle of the M22 created a problem with noise (hence the name “rock-crusher”).
Do they still make Muncie transmissions?
This patent number, according to Cangialosi, can be found cast into most Muncie four-speed main cases. Fodrea’s legacy is far-reaching, extending into popular transmissions around to this day, yet most have no idea who he was….21.
| Muncie Four-Speed Gear Ratios | |
|---|---|
| M20 Wide-Ratio 1963-’65 | |
| Fourth Gear | 1:01 |
| Reverse Gear | 2.27:1 |
How do I identify a 4 speed Muncie transmission?
Another way to confirm that the transmission is original to your car is most Muncie four-speed transmissions will have a Vehicle Identification Number (VIN) number stamped on the main case. The engine and transmission were stamped at the same time by the final assembly plant.
What RPM do NASCAR engines run at?
about 7000 and 10,000 RPM
During a typical oval race, these engines continuously cycle between about 7000 and 10,000 RPM.
What is a dog box transmission?
So named for the dog “ears” that protrude from the gears, dog box transmissions are straight cut (as in the photo above), not helical (spiral cut) as in street transmissions. This allows the driver to jam the car from gear to gear, and they are bigger and beefier. Look at how big and beefy those dog ears are.
Why are Nascar engines pushrod?
However, NASCAR continues to utilize 90-degree pushrod V8s for generally two important reasons – the simplicity of the engine, which helps in terms of policing teams’ production of them; and from a cost standpoint, they tend to be less expensive.
Do Nascar drivers use clutch?
Unlike the transmissions on normal manual cars, NASCAR cars do not require the driver to press the clutch pedal while shifting gears. Although NASCAR cars have clutch pedals, these are rarely used when shifting gears. Instead, drivers shift gears by matching the car’s speed to the car’s RPM (revolutions per minute).
Why is it called dogleg?
A dog-leg gearbox or dogleg gearbox is a manual transmission shift pattern distinguished by an up-over-up shift between first and second gear. The layout derives its name from a dog’s hind leg, with its sharp angles.