"Rock Crusher" (M22) Transmission

[Stallion]

I was just wondering, I hear good things about this transmission. I think this option stopped at '72? Or around there in the early Shark years.

I was wondering what made this tranny so special and desireable. Anybody have any ideas and specs and information on this?

Thanks!

TR

 

[Bob Chadwick]

One of the reasons was the basis of it's nickname. It was very durable.

 

[Stallion]

Thanks for the reply!! But what made is so durable? What was in her that wasn't in the M21?

Thanks again!!

TR

 

[Culprit]

Rock Crusher

The teeth on the gears of the M22 were cut with less angle - they were straighter. This made them stronger allowing them to handle higher loads and more torque. This also changed the way the teeth meshed and made the transmission more noisy. Some people though it sounded like it was crushing rocks. Some people thought it was strong enough to do so.

This heavy duty 4 speed Muncie was offered in Vettes from 66-71 and was included in the ZR1 and ZR2 packages. I don't think it could be had as a separate option in 72, but it was still a part of the ZR1 package.


Semper Fi,
Culprit

 

[Stallion]

Okay, thanks for the information!! I can't imagine it's too noisy. After all, if you are into Corvettes, noise (at least in perspective) isn't all that bad.

SEMPER FI, DO OR DIE!!! When I grow up, I'm going to be a marine. That's always been my dream.

Thanks again!!

TR

 

[Culprit]

Stallion,

Are you going to college first to become a commissioned officer of Marines, or are you planning to enlist after high school?

There are several good programs out there: USNA, ROTC, MECEP etc. I know I'm talking greek to you right now - and I'm doing it on purpose. From looking at your profile, you are turning 17 next month. My point is, that now is not too early to start researching the different options, especially if you want to go to college and become an officer of Marines.

Whatever path you choose, work hard, do your best, and good luck.


Semper Fi,
Culprit

 

[Stallion]

Actually I've always wanted to go to the United States Naval Academy (USNA ) since I was a little boy. And I've always wanted to be a marine, so I figured I will try to go through the Academy. I pretty much understand what you are talking about, though.

The one thing I am worried about is my eyes. I don't have perfect eyes and to get into the Academy I will need a waiver. I just hope that I am good enough to get that waiver. I get my SAT scores back next week, and my GPA is a solid 4.5 on a 4.75 scale (private school). I'm athletic, I've been crosscountry varsity since I was a freshman, varsity tennis starting sophomore year and until present. So my resume is pretty good, I'm just really worried about my eyes.

If I don't get into USNA, then I will go to a civilian college, and as you said, go ROTC I think.

Semper Fi,
TR

 

[Culprit]

USNA

Stallion,

I graduated from USNA in '99. My current e-mail is joshua.culp@cjsotf-cre.army.mil. I'm working with a joint unit on this deployment right now and the Army e-mail address is killing me!

E-mail me if you have any quesitons. Don't worry about the eyes. As long as you don't have any astigmatism and you are correctable to 20/20, you'll be good to go. I'm blind as a bat.


Semper Fi,
Culprit

 

[Stallion]

"As long as you don't have any astigmatism"

But I do have an astigmatism. As for being able to be corrected to 20/20, I'm not really sure. So the astigmatism will hurt me then?

Semper Fi,
TR

 

[JohnZ]

I doubt it - there are lots of commissioned officers with glasses. I had lots of family advice on the issue (Dad was a full Captain Navy carrier pilot, uncle was a 3-star Air Force General, SAC Deputy Commander under Curtis LeMay), so I took Army ROTC at Michigan State, was commissioned when I graduated in '62, went to Flight School (with a waiver for my glasses), wound up later as C.O. of a hunter-killer helicopter gunship Company in Vietnam in '64. As bad as they needed helicopter pilots at the time, I probably could have made it with a white cane Go the officer route, whichever way you can.

 

[Culprit]

Stallion,

The only way to know if they will accept you and your eyeballs is to ask. From what I hear they are accepting more eye conditions now than they were when I was applying in the early 90's. They are even allowing (and paying for) certain types of eye-surgeries - for pilots even! That was unheard of just a couple of years ago.

What year are you in school? It's not too early to begin the application process for both the Academy and ROTC. Apply to everything to keep your options open until it comes time to make a decision.

E-mail me and I will answer any of your questions about the Academy, outline the admissions process, and get you in contact with the admissions department if you aren't already. I don't know much about applying for ROTC since that's not the route I took, but the information is out there and shouldn't be too hard to get your hands on.

JohnZ - You've been there and done that - thank you sir.


Semper Fi,
Culprit

 

[matchframe]

I had a Rock Crusher in my '68 Camaro. It really does sound like bearings going bad or something. I had it behind a Chevy 302 and a 427, and it took all the punishment that it was given. Clutches were another story! If the HP is high, I would recommend a scattershield. I had a friend that had his clutch take flight through the dashboard, barely missing his right foot. After rebuilding the car, he put his Rock Crusher back in without having to do anything to it. It operated like a champ! The one thing I noticed about the Rock Crusher is if you are sitting still, engage the clutch to put it in first, you had to let the trans stop spinning before it will go into first. I changed out the syncronysers (Spelling?) twice, but still had the same problem. If you can get one, I would recommend it!

Bill :cool

 

[Culprit]

Runway 27, wind 090 at 5, cleared for takeoff...

What car/engine combination was your friend driving when his clutch made the unauthorized departure?

 

[cruisin-davey-g]

I was just wondering, I hear good things about this transmission. I think this option stopped at '72? Or around there in the early Shark years.

I was wondering what made this tranny so special and desireable. Anybody have any ideas and specs and information on this?

Thanks!

TR

Hey Stallion: Muncie "Rock Chrusher"........Ah, yes, I remember 'em well. They're great little trannies.......close ratio, low first gear (usually 2.20:1) & you can put any gear in the rear & it'll handle it. I had a 5:39 Detroit Locker in the rear behind one of mine & a 4:88 behind another. The "Rock Chrushers" make a distinctive "whine" sound when going through the gears (due to the way the gears in the trans are cut) & if your gonna drive it on the street, everybody who knows Chevy Manuals will know what you've got & it's a great "intimadator". Only thing about all "Muncies" though: the "brass" is a little weak & if you "pound" on 'em all of the time, the "brass" (syncronizers) tend to go bad. That's why alot of "muncies" seem to "grind" a little when you shift. Just remember to keep your linkage well adjusted (the closer, the better) & you should have no trouble. I think you'll like it, I did. Later....................... Dave

 

[Stallion]

Stallion,

The only way to know if they will accept you and your eyeballs is to ask. From what I hear they are accepting more eye conditions now than they were when I was applying in the early 90's. They are even allowing (and paying for) certain types of eye-surgeries - for pilots even! That was unheard of just a couple of years ago.

What year are you in school? It's not too early to begin the application process for both the Academy and ROTC. Apply to everything to keep your options open until it comes time to make a decision.

E-mail me and I will answer any of your questions about the Academy, outline the admissions process, and get you in contact with the admissions department if you aren't already. I don't know much about applying for ROTC since that's not the route I took, but the information is out there and shouldn't be too hard to get your hands on.

JohnZ - You've been there and done that - thank you sir.


Semper Fi,
Culprit

Actually we are on top of everything and we have what we need for admissions and we know what we have to do. Right now I'm a junior, so I haven't applied yet. But we have everything layed out what we need to do.

Thanks!!

Semper Fi,
TR

 

[matchframe]

What car/engine combination was your friend driving when his clutch made the unauthorized departure?

He had a '69 Camaro that he built a 396 for. The 396 had 12:1 pistons, 427 heads (I don't know any more specific than that) tunnel ram w/ 2 Holley 850s. I don't recall what the cam was other than it was a solid lift. The headers were open at the time. He did the launch right at the staging lights at the Houston International Speedway. This was in 1976.

Man those were fun times!

Bill :cool

 

[cruisin-davey-g]

He had a '69 Camaro that he built a 396 for. The 396 had 12:1 pistons, 427 heads (I don't know any more specific than that) tunnel ram w/ 2 Holley 850s. I don't recall what the cam was other than it was a solid lift. The headers were open at the time. He did the launch right at the staging lights at the Houston International Speedway. This was in 1976.

Man those were fun times!

Bill :cool

Bill; Well I guess you could say that he was definately "pounding" on it. In all of my drag-racing days, I never "lunched" a muncie "Rock-crusher"; Saginaws......yes, but never a Muncie M22. Broke a shifter once; lost a drive shaft; blew numerous clutches; broke an axle. Ah yes.........you're right "those were the days!" Be cool..............Dave

 

[cruisin-davey-g]

Hey Stallion: Good luck to you on your pursuit of a Military career.

Dave (Viet-Nam vet)

 

[Stallion]

Hey Stallion: Good luck to you on your pursuit of a Military career.

Dave (Viet-Nam vet)

Thanks a lot, Dave!! I appreciate it.

TR

 

[cruisin-davey-g]

Thanks a lot, Dave!! I appreciate it.

TR

Yeah & "God Bless" our troops stuck out there in that desert & the near 100 degree heat. "Hats OFF To You's Guys & Gals"

Dave (Been To Hell & It Was No Picnic)