Hemi 4 speeds---(how strong)?

looking for a strong 4 speed ,I know alot use muncies,ive got a super t10 in stock now ,havnt used it yet because not sure how tuff they are..Id like to put something in i wont have to worry about for a while for a little street and strip.Ive been told the hemi 4 speeds were kind of indestructable.True or not,any sugestions?

 

Chrysler's A833 four speed is/was a great transmission. I wouldn't hesitate to use on. A better bet might be a Ford Toploader four speed, as more parts are readily available for it.
Both transmissions are very strong

 

Oh, and check with these guys: UMTR Stick Shift Forums

 

I'll second the New Process A-833. I've got one that came out of a Blazer behind a SBC 350 in my Studebaker. It came with a Hurst shifter from the factory, has a real low first gear, third gear is 1:1 and 4th is 0.76:1 overdrive. Most ****** shops can do a rebuild and there are parts available. The light duty units were used in 6-cyl. Valiants and 'Cudas, the heavy duty units were used in big block Mopars and Chevy's.

 

the old drag racers used to put that transmission behind everything!

 

Strong enough for whatever you wanna do - they put the Chrysler engineers on the project when the regular ****** guys couldn't supply enough 4 speeds, and you know them Chrysler engineers.

If it's in good repair with a nice tight shifter, you'll be fine. Welllll the overdrive models weren't quite as strong, but they weren't exactly week either.

other than that you're good to go.

rick

 

I slick shifted a Chrysler 4 spd and put it in my '67 B/MP Camaro in 1969. I had a close ratio Muncie in the car and needed a lower 1st gear in an attempt to get the car moving quicker. I had earlier replaced the 4.88 with a 5.13 to help this situation but what was gained on the low end I lost at the finish line by taking the cam past its peak, gaining little. Switching back to the 4.88 and the chrysler trans lowered the E.T. almost .2 and the MPH went back to 132. That wicked low gear allowed the car to carry the front tires for almost the length of 1 st gear.
That New Process 4 spd was one tough cookie, taking everything we could throw at it. After 30 years it's still doing drag duty in a friends Chevelle with only the replacement of the bearings about 10 years ago.

Frank

 

I have one set aside for my project I have no fear that it won't take the grunt of two turbos that I plan to use on my Chrysler straight 8 . Got this trans from a friend of mine he had one behind a 600 hp. 416" Mopar stoker and never busted a very stout and heavy built trannie. Rob.

 

The A-833 is a great transmission, BUT THEY'RE NOT ALL OVERDRIVES!!!

The A-833 came in several variations. They're not all listed here. The '64 versions had ball/trunion type output flange, after 65 they went to slip yokes.

An 18 spline, iron case, 4 speed (no overdrive, 4th 1:1). This is what was behind the 426 hemi's and some of the 440's. Bomb proof.

A 23 spline, iron case, 4 speed. (again, no overdrive). Came behind just about everything up until 75 before the OD version came out. Not quite as strong as the 18 spline version, but it's unlikely you'd ever notice.

A 23 spline, iron case, 4 speed overdrive. These came in some A-body mopars for a short period before the aluminum version came out. Not as strong as a regular 833, but again, can hold up to quite a bit of power.

A 23 spline, aluminum case, 4 speed overdrive. These came in all kinds of stuff starting in 1975, A body's and all kinds of small trucks (Dakota's) until 1987! Same deal as the other overdrive. Because of the way the overdrive gear works, its not quite as strong as the standard 833. But I know folks that have run them behind 440's without issues. The gear spread between 1st and 2nd is pretty wide, so not as good a racing transmission and the standard 833. But 4th gear is .73:1 in the car version, and .71:1 in the truck version, so it's a good choice for those long drives.


The end all, be all article on all versions of the 833. Pictures, gear ratio's, the works

http://www.slantsix.org/articles/4-speeds/ODA833fourspeed1.htm

 

The biggest difference these days between the 18 spline and 23 spline 4-speed units is the cost. A (real) Hemi A-833 can fetch over $1500 wheras the basic A-833 still can be had for as little as $300-$400.
Are they stout? Check out some of the older A/S cars.

.

 

I concur, very tough trans, and also agree with the cost factor. I was under the impression that a Super T-10 was also a good and strong trans as long as it's an iron case. True? False? How much power and how heavy is the car?

 

Everyone always throws out the cliche, always heard they were more expensive than the Chevy/Gm this or that. Yes, probably more expensive to buy. But once installed, you never have to touch it again. A foreign concept to folks used to dealing with GM parts...
The Mopar trans will be totally bulletproof for your application.

 

Super T-10s are very strong, dont know why so many guys overlook them. Lots of MP cars ran Super T-10s. They are ALMOST as strong as the A-833, easier to get parts for, and not as heavy. Not dissing the A-833 here, as others have said, it will take ANYTHING you can throw at it. But the Super T-10 is a very capable trans. Light years better than a munchie.

 

If a Super T-10 is just as strong,you can buy a new for about 1500 bucks ready to bolt in a GM vehicle.I'm thinking some Super T-10's had a low first gear,3.42? That are not as strong.

 

Super T-10s have been made with a wide variety of gear ratios. Dont know about 3.42, its certainly possible. 2.43 and 2.64 spring to mind as being common back in the seventies. I could check my reference material if someone really wants to know.

 

Ran a ton of different stuff in my H/G '56 Chev, destroyed them all, even broke the ears off the Chrysler 4 sp, finally went to a Doug Nash 5 sp, ****** problem solved. They used to make a street version of the DN 5 speed, that was the trick back then. The Chrysler should do fine for your street use, the tires will break loose on street traction before you damage the trans.

 

I was told they were used in PU trucks.I don't know for sure,maybe used in cars with gas mileage rear gears.I bought a Super T-10 for parts,clutch drive gear was stripped clean.It appeared to be a 3.42 first gear,6 lines on the input shaft? The small diameter drive gear is weaker than on larger diameter closer ratio ge****ts.

 

Havent had time to dig out my stuff, but ran across this in a quick google search
http://www.auto-ware.com/techref/transratios.htm
IIRC, Norm Mayerson used a ST-10 either a 2.64 low or 2.88 low, depending on track conditions, in the "Car Craft" C/SM Camaro that won modified at Pomona in '76.
The 3.44 is probably what you had.

 

There are TWO different tail shaft lengths on the A833 that you need to watch for. The shorter tail shaft would be from an A-body (Dart, Duster, Demon, Valiant, '69-earlier Barracuda), and the longer unit would be from any B-, C-, or E-body Mopar. The A833 OD units came out in the 1975 model year, IIRC, and lasted through the end of F-body (Aspen/Volare) production in the '80 model year.

 

I saw a write-up in some rod mag. a couple yrs. ago about some shop that specialized in rebuilding the A833 boxes. Of course, I lost it somewhere. A**** other things, this shop had a service that built up & re-ground the input shaft bore & the mainshaft snout where that pressed in roller bearing goes. Anyone can tell me who that was that did that? Several of the mainshafts I've come across are pitted & galled on the snout making them junk. Any leads will be appreciated.

 

There are also 3 different tailshaft housings that put the shifter in a different place, a-body are the farthest forward, then theres the E-body/'71 up Body in the middle, '70 and earlier b-body is the farthest back, may be a problem depending on what kind of car you are putting it in. The last two fit the long tailshaft.

 

all parts are available for a A-833 from Brewers Performance in Dayton Ohio

 

@1970 and up trans have both E and B body mounting bosses on tailshaft.....
And you have it backwards...B-body shifter pad is furthest forward. (I have two sitting on my floor), A-body in middle, and E-body is at furthest back...

http://www.yearone.com/yodnn/tech/V...edtransmissiondecoding/tabid/332/Default.aspx

Good info here....
http://www.slantsix.org/articles/4-speeds/ODA833fourspeed1.htm

 

P***ons has everything as well

http://www.p***onperformance.com/

 

Ooops! Been a long time since I messed with this stuff, guess my memory is not what it used to be.

 

Brewer's Performance, Inc.
2560 South State - Route 48
Ludlow Falls, Ohio

Phone (937) 698-4259

 

1st off, the Ford RUG Top-Loader comes in a 4-speed OD ****** if you want to hunt one up. It doesn't have much of an OD ratio tho, but it is still strong that I know of. Please do your homework here is all.......

Next, the A833 OD ****** is only rated at 275 T because of the deep low gear even tho guys run hell outta them. I figure you hook one hard and it will shell. But the regular A833 is strong as hell......... I'm talking STRONG!!!

For the money for us Chevy guys, imho, the high-zoot, bells and whistles Supercase/steel mid-plate italian M-22 gear set Muncie should be good to over 600 T easy. But it will be a pricey jobber...

And the ST-10/Muncie M-21/M-22 are right in there but not quite as strong. The M-20 Muncie is the weakest of the Muncie family because of it's deeper 1st gear.

And talk about deep 1st gears, the Sag 3.50 1st gear ratio 4-speed will shell like a grenade if you hook it, but behind say a 265 or a 283 that doesn't put out much T, it will go fine 'till you hook.

When we get above something like 650/700 T, we need to start looking at the high-end Tremac 5-speed and then to the T-56, 6-speed jobbers.

And at a higher T, then look to G-Force and others but I'm talking about selling a pound a flesh here and renaming your 1st born.

I got deep into this because of my 550HP/580T, 496 in my '67 350SS/RS Camaro car with the M-20 and 12-bolt, 3.31 posi..

pdq67

 

I thought the Pont-a-Mousson was the four speed originally used behind Mopar hemis. Just go look for a Facel Vega being parted out in your local junkyard....

 

"I thought the Pont-a-Mousson was the four speed originally used behind Mopar hemis. Just go look for a Facel Vega being parted out in your local junkyard...."

Hey Weasel what's this ****????????

pdq67

 

Actually, when the first 426 Hemi came out, they had a french 4 speed. Didn't take long for the Mopar guys to figure out they needed a real 4 speed to take the power and designed their own. I think the french 4 speed was so bad, most guys went with a 3 speed until the 833 came out. Gene