63mako

Here is the price list from Autogear. $1950 buys a brand new M22W.
http://www.autogear.net/assets/liter...pricing_pf.pdf

elle88

the main reason for 3.73 woul be top speed. even if i'll be seldom above 100mph (because of roads and aerodynamics ) i don't like the idea that my car wit 4.11 it's just a 126mph car.

3.73 147mph@7000 rpm , 136mph@6500 rpm , 3200rpm@70mph
4.11 126mph@7000rpm , 117mph@6500 rpm , 3800rpm@70mph

I have 150mph rated tires and once some aerodynamics issues are addressed (add lower front spoiler and lower somewhat the car ) i like the idea of some hi speed or to have lower rpm at relatively hi speed to don't stress the engine .

even if I have 9:1 ratio now ( 4.11 x 2.2 ) I like my 1st gear acceleration.with 3.73 x 2.56 will be even slightly better.
my car is meant for fast road driving and sometimes track ( road course), so the target is to have a "general purpose" motor-trans-diff combo without exceeding on opposite ends (too powerful 1st or too fast 4th gear). toughts above lead me toward the decision to stay with the Muncie instead than going for a 5 speed

richiev88

I have a jerrico 4 speed nascar trans in my Camaro, makes great music

gkull

I drove my Vette for many years with a 4.11 and .70 OD geared to go 175 mph@ 6500 rpm. Up to 150 goes pretty fast and then it tapers off. It superprizes the GTR and GT3 Porsche guys when they think that they have another pushover older Vette to pass on the freeway on ramp and I floor my 434.

At the race shop where I work we exclusivly us TEX racing T10's and from time to time we see Jasper and Jerico trannys. If you ask me I get sick of the noise in a 30 minute lapping session. You can't hear if your car has a problem. I cut down a rear slick once and I couldn't hear it. I just felt the car wobble. You have to ware ear plugs on the inside of your helmet.

I have the TKO 600 in my Vette and it is nice. If i had the money I would buy one of the clutchless shifting manuals or some kind of sequential shifing boxes.

elle88

Gkull , yes I already thought that I could get tired of the trans whine after a while...btw my car rides are short rides...just 30 miles and very focused on driving and learning.never been at a racetrack but I'm sure that after 3 laps I'll be done and tired.
the 4th gear of the M22 has no whine,good for cruising....
i'll think anyway...don't know why but i'm not totally convinced to go for a 5 speed tremec, and not only for the hi price.the gear spacing and the deep first...the aftermarket look...not totally convincing me.
and I'm trying to keep the car as stock as possible to possibly have her admitted to the vintage racing class

gkull

TKO600 2.87 1.89 1.28 1.00 .64

Is the tranny I used for the last few years with a 4.11 rear end. So you could race around in the first 4 gears and 5th is for cruising. Your big motor has the TQ to drive around in 5th.

I just changed out my 4.11 and went with a 3.55 to make my first 4 gears more usable. I wanted to be able to go faster in first and use my TQ instead of shifting so often

Solid LT1

My humble opinion, the shifter on a M-22 is better than a Tremec TKO and I own both versions of Vettes (when the Muncie shifter is properly set-up.)

69ttop502

I agree, I have driven a well broken in TKO extensively and I have a Muncie/Hurst and the Muncie wins the shifting feel hands down. Especially when you shift over 6500, the TKO is not as happy in my opinion.

Bill

TheSkunkWorks

If you're looking at a new ring and pinion set anyway, and 1/8 & 1/4 mi ET's aren't your number one priority, 3.55's with an M22W happen to model up quite nicely for your engine. Your 60' and 0 to 60 are already limited more by traction than gearing anyway, and you'll have a lot more room to stretch its legs on top end.

And, if you do choose the Masiero MJ22W gears, I'd install an HD mid-plate while you're at it. Don't forget that 5speeds (Paul) is a CF member, assisted in designing the Muncie super case, and has all the good stuff...


richiev88, do you drive that Jerico (dog box, correct?) on the street, and if so how is it?

richiev88

Hi, yes dog box, its fine on the street, very positive on the shifts, have a 3 plate clutch 7 1/4 clutch on the front of it, not so good for the street. Really depends on the person, would not suit everyone. They do make lot of noise, but so does the engine, and locker diff.....not a daily driver. On the down side, Jerico reccommends you warm up the box before hard use, but that runs true for most things. I have a mate who runs a Tex racing ( t-10 style dog box) in his 572 cu 70 vette, as it was the best price option gearbox that would stand up to his engine.

TheSkunkWorks

Thanks for the feedback. I've often wondered if I'm the type who might just be happy with a dog box. Need to find someone who'll let me test drive one (in a street machine), I guess...

63mako

leave your 4.11 alone and put in one of these.
http://forums.corvetteforum.com/c3-t...or-63mako.html

gkull

I repair Hewland dog ring transaxles. They are very easy to take apart and have back together in a matter of minutes. The problem is that you need a very thick wallet to keep up on replacing dog rings. Just a slight miss on the rpm in an up or down shift and you ding away the sharp edges of the dog rings. Then the ultimate that can happen and has killed the race car drivers is man handling a missed shift and snapping the shifting fork. Like the 4-5 and have it try to be in two gears at once.

Like I said our shop installs TEX racing trannys